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International Correspondence Chess Federation
International Correspondence Chess Federation
International Correspondence Chess Federation
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International Correspondence Chess Federation (ICCF) was founded on 26 March 1951 as a new appearance of the International Correspondence Chess Association (ICCA), which was founded in 1945, as successor of the Internationaler Fernschachbund (IFSB), founded on 2 December 1928.

Key Information

The current president is Eric Ruch.

History

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Before ICCF

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Some sources say that correspondence chess was already played in the 12th century.[1] Most chess historians doubt whether this is true. In the 19th century chess clubs and magazines started to organize more regular tournaments, national as well as international tournaments. Finally in 1928 the first international league (Internationaler Fernschachbund) was founded. Alexander Alekhine, Paul Keres and Max Euwe were well-known enthusiastic correspondence chess players during some periods of their chess careers.

ICSB

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On 15 August 1928, the ICSB (Internationaler Correspondensschachbund/International Correspondence Chess Federation) was created under the leadership of Erich Otto Freienhagen (Berlin), which had existed in a loose form since November 1927. Other members of the management were J.Keemink (Netherlands), K.Laue, H. von Massow, H.Schild (Germany) and C.Olsen (Norway). This was the first successful attempt to create an international correspondence chess federation. It survived for only a short period, but its successor proved to be viable and successful.

IFSB

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On 2 December 1928, a new federation was formed in Berlin. To distinguish it from its predecessor, it was named the IFSB (Internationaler Fernschachbund). The founders were: R.Dührssen (President), J.Keemink (Vice-President), H. von Massow (Secretary), K.Laue (Teasurer) and L.Probst (Managing Editor).

Freienhagen (and others from ICSB) continue in parallel with the IFSB. Freienhagen died in 1933.

After this, correspondence chess players started joining IFSB. At that time, there was only individual membership and only later did it become possible for countries to be members.

IFSB Champions: Eduard Dyckhoff and Eugen Busch (Germany), 1929; E.Dyckhoff, 1930; A.H.Priwonitz (Germany), 1931; Hans Müller (Austria), 1932; Marcel Duchamp (France), 1933; Hilding Persson (Sweden), 1934; Paul Keres (Estonia), 1935; Milan Vidmar (Yugoslavia), 1936; Miklos Szigeti (Hungary), 1937 and Edmund Adam (Germany), 1938.

IFSB European Olympiad: the Hungarian Team (Balogh, Nagy, Szigeti, Barcza, Boros and Szucz) won the Final (1937–1939).

When the Second World War began, the IFSB Board decided to discontinue its activity.

The top officials during the history of the IFSB here:

1928–1934:Germany R.Dührssen (President) – J.Keemink (Vice-President)

1934–1935: Denmark K.Schjorring (President) – I. Abonyi (Vice-President)

1935–1939: Hungary I.Abonyi (President) – H.W. von Massow (General Secretary)

Current membership

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ICCF, the present successor of the IFSB, is a federation of national member organizations. At this moment there are worldwide 56 ICCF national member federations. Most of them are playing several games simultaneously.

Presidents

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  1. Switzerland Jean Louis Ormond [de] (1951–1955)[2]
  2. Norway Anders Elgesem (1955–1959)
  3. Germany Hans Werner von Massow [de] (1959–1987)[3]
  4. Netherlands Hendrik Mostert [nl] (1988–1996)
  5. Scotland Alan Borwell [de] (1997–2003)
  6. Czech Republic Josef Mrkvicka (2003–2004)
  7. United States Max Zavanelli (2005, acting)
  8. Algeria Mohamed Samraoui (2005–2009)
  9. France Eric Ruch (2009–Now)

Tournaments

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Using its own language-independent chess notation, ICCF organizes all kind of tournaments: individual and team championships, title norm tournaments and promotion tournaments (from Open Class until Master Class) – in postal and the ICCF correspondence server versions. Starting from 2011 ICCF organizes chess960 events.

ICCF is closely co-operating with the leading world chess organization FIDE. All ICCF titles, championships and ratings are recognised by FIDE.[citation needed]

Titles

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The correspondence chess title International Correspondence Chess Grandmaster is a title that is rewarded by ICCF when a candidate meets the one of following qualifications:

  1. That player who places 1–3 in the World Championship final,[1](§1.5.2.2.a)
  2. They are highest scoring player on board 1 in the final of the CC Olympiad after all scheduled tiebreaking rules are applied, but only with a positive score,[2](§1.5.2.2.b)
  3. They gain at least two grandmaster norms in international title tournaments with a total of at least 24 games. (This number of games may be reduced if the player overscores sufficiently to achieve the standard norm requirements over 24 games).[3](§1.5.2.2.c)
  4. The national federation representing the candidate makes an appropriately qualified application. For this, a two-third majority vote of Congress must be obtained.[4](§1.5.2.2.d)

Other ICCF correspondence chess titles include:[4][5]

  • SIM: Correspondence Chess Senior International Master
  • IM: Correspondence Chess International Master
  • CCM: Correspondence Chess Master
  • CCE: Correspondence Chess Expert

Legacy titles (No longer awarded):

  • LGM: Lady Grandmaster (equivalent to CCM)
  • LIM: Lady International Master (equivalent to CCE)

See also

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References

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[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

International Correspondence Chess Federation

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The International Correspondence Chess Federation (ICCF) is the global governing body for , a form of the game played remotely via postal mail or electronic servers, organizing international tournaments, championships, and title awards for players at all skill levels. Founded on March 26, 1951, in , , as the successor to the International Correspondence Chess Association (ICCA, established 1945), which itself followed the International Federation for Correspondence Chess (IFSB, formed 1928), the ICCF promotes the sport's development through structured competition and fosters international friendships among participants under its motto "Amici Sumus" (We Are Friends). With around 59 national member federations divided into four zones—, , /Pacific, and /—the ICCF coordinates a wide array of events, including individual and team tournaments accessible via postal or webserver formats, allowing players to manage up to 15 games simultaneously. Its flagship competitions encompass 33 finals since 1950 (with the 33rd final in 2025 shared by 10 co-winners, including Javier Ros Padilla of , Angel Acevedo Villalba of , Tansel Turgut of Turkey, Olaf Hesse of , and Valery Aleksandrov of , following a unique forfeit circumstance), Ladies World Championships with eight finals from 1968 to around 2010 (last known champion Olga Sukharova of ), and 23 Olympiads since 1949 (with the 23rd ongoing as of 2025; inaugural winner ). The organization also awards prestigious titles such as International Correspondence Chess Grandmaster (ICCF-GM, first conferred in 1953) and International Correspondence Chess Senior International Master (ICCF-SIM) through dedicated norm tournaments and promotion events. Recognized by since its inception, the ICCF supports thousands of active members worldwide, enabling amateur to elite-level play while adapting to modern digital platforms for broader accessibility.

History

Origins of Correspondence Chess

Correspondence chess emerged in the early as a means for geographically separated players to compete via postal systems, with the first documented international match occurring between the Edinburgh Chess Club and the London Chess Club from 1824 to 1828. This four-year contest, initiated by a proposal from in March 1824, involved teams exchanging moves by mail and marked the beginning of organized postal chess, fostering interest across Europe despite the slow pace of communication. By the mid-19th century, individual games and informal matches proliferated, aided by improvements like the Penny Post in Britain in 1840, which reduced costs and encouraged broader participation. Throughout the late 19th century, correspondence chess gained structure through national organizations and events, exemplified by the British Chess Association's (BCA) sponsorship of a major tournament in 1873. This event, open to players across the , highlighted the growing popularity of postal play and led to the formation of dedicated clubs, such as the first correspondence chess club in Britain in 1870. Key developments included inter-city and county matches, which built community and skill among participants unable to travel for over-the-board games; for instance, Anglo-American correspondence matches began in 1877, extending the format transatlantically. These initiatives laid the groundwork for formalized leagues, emphasizing strategy and analysis over rapid play. The push toward international coordination culminated in the formation of the Internationaler Fernschachbund (IFSB) on December 2, 1928, in , as a successor to an earlier short-lived body. Founded by figures including Dr. Rudolf Dührssen as first president and I.W. Keemink as second president, the IFSB aimed to standardize rules and organize global tournaments, starting with individual and team events shortly after inception. Its debut international competitions included six-board national team matches, such as versus and beginning in March 1931, which attracted participants from multiple nations and promoted fair adjudication processes. Under the IFSB, membership expanded rapidly, reaching over 100 individual players by mid-1929 and growing to 18 member countries by the end of 1937, reflecting widespread enthusiasm across and beyond. The organization hosted successful championships, including plans for a world correspondence title accepted in 1930, though geopolitical tensions began disrupting activities by the late 1930s. severely impacted international play, halting cross-border exchanges due to wartime restrictions and leading to the suspension of the IFSB's activities during , with the last publication in 1939 and plans to resume postwar. Postwar revival efforts commenced with the establishment of the International Correspondence Chess Association (ICCA) in 1945, which sought to resurrect global postal chess amid recovering national federations. This interim body organized preliminary tournaments and facilitated reconnection among players, setting the stage for more permanent international governance.

Formation and Early Years

The International Correspondence Chess Federation (ICCF) was established in 1951 as the successor to the International Correspondence Chess Association (ICCA), which had been founded in 1945 following disruptions to international play. The ICCA itself succeeded the Internationaler Fernschachbund (IFSB), formed in 1928 to organize global postal chess tournaments. In its formation, the ICCF adopted the IFSB's existing tournament results and rules to ensure continuity, allowing ongoing events to transition seamlessly under the new organization and facilitating postwar recovery in . The first ICCF World Correspondence Chess Championship, which had begun on May 1, 1950, under the auspices of the predecessor body with 78 participants, concluded in 1953 and was won by Australian player Cecil Purdy. This event marked a key milestone in the federation's early operations, emphasizing the slow-paced nature of postal play where moves were exchanged via mail, often taking years to complete. Early challenges included limited initial membership drawn primarily from European and select South American national federations, restricting participation to around a dozen countries at the outset and focusing efforts on rebuilding international networks amid lingering wartime divisions. Cooperation with the Fédération Internationale des Échecs () began in the federation's formative period, with formal recognition solidified in 1953 when awarded the inaugural Grandmaster and International Master titles in to top performers, including Purdy. This endorsement helped legitimize ICCF events globally and integrated into the broader chess ecosystem during the 1950s consolidation phase.

Expansion and Key Milestones

Following its establishment in the early , the International Correspondence Chess Federation (ICCF) experienced steady expansion during the 1960s, as gained popularity beyond through increased international participation and the establishment of new national federations. By the , ICCF membership had grown to over 50 countries, reflecting broader global reach with the inclusion of non-European federations such as the in 1952 and in 1965. This period marked a shift from predominantly European dominance to a more diverse organizational structure, enabling players from diverse regions to engage in international tournaments. Key milestones underscored this growth, including the introduction of team championships in 1959, which fostered collaborative national competitions and boosted engagement across member nations. The first Women's was launched in 1968, with the inaugural winner Olga Rubtsova in 1972, promoting gender inclusivity and expanding the federation's appeal to female players worldwide. Additionally, granted initial recognition to ICCF titles in 1953 with the establishment of the International Correspondence Chess Grandmaster title, which was extended to all ICCF titles by the , solidifying their legitimacy within the global chess community. Technological advancements further propelled ICCF's development, with the transition to computerized administration in the streamlining tournament management and move transmission, followed by the launch of the ICCF in 2004, which revolutionized play by enabling real-time online correspondence. In recent years, ICCF has adapted to contemporary challenges, including preparations for its 75th anniversary in 2026 and the outcomes of the Virtual Congress held on October 4, 2025, which addressed strategic priorities like formats and digital enhancements, with voting results approving updates to rules and platforms published on October 22, 2025. The prompted a full shift to online events, ensuring continuity without interruption, complemented by ICCF's donation of $3,750 to the World Health Organization's response efforts. Statistically, ICCF's player base has expanded dramatically, from approximately 1,000 active players in the 1950s to over 3,800 rated players as of October 2025, as evidenced by the federation's comprehensive rating lists that track global participation. This growth highlights the enduring appeal of correspondence chess in an era of digital connectivity.

Organization and Governance

Membership and Structure

The International Correspondence Chess Federation (ICCF) consists of national member federations that represent correspondence chess organizations in their respective countries, serving as the foundation of its global network. Full members are the official national bodies, entitled to voting rights at the ICCF Congress, while associate members encompass international correspondence chess clubs with limited rights. As of recent records, the ICCF maintains over 60 national member federations worldwide, including those from the United States (via ICCF U.S.A.), Germany (Bund Deutscher Korrepsondanzschachspieler), Russia, and the Philippines, among others such as Argentina, Australia, Austria, Belgium, Brazil, Bulgaria, Canada, and Chile. The ICCF's internal structure is governed by the Executive Board, comprising the President, General , Finance Director, World Tournament Director, Marketing Director, Services Director, and Rules Director, all elected by the for four-year terms. This board oversees strategic and operational activities, supported by key commissioners such as the Qualifications , who evaluates and recommends title awards based on performance norms, and the World Tournament Director, responsible for coordinating all global events, managing tournament offices, and handling player withdrawals or disputes. The organization is further divided into four regional zones—, , North America/Pacific, and /—each managed by zonal directors on the Executive Board and super regional tournament commissioners to facilitate localized event planning and administration. Individual players register for ICCF participation via a free online signup process on the official website iccf., where they create an account and can immediately access server-based events without mandatory national federation affiliation, though affiliation is encouraged for certain tournaments. Upon registration, players are integrated into the ICCF's centralized and can enter graded tournament classes tailored to skill levels, ranging from beginner-oriented Aspirers Groups to advanced Open and Higher classes for experienced competitors approaching master standards. The ICCF promotes inclusivity through targeted initiatives, notably by organizing dedicated events for women such as the Women's World Correspondence Chess Championship to encourage female participation and award gender-specific titles. This structure has grown steadily since the organization's formation, reflecting broader expansion in global engagement.

Leadership and Presidents

The of the International Correspondence Chess Federation (ICCF) has been provided by a series of presidents who have guided its development since its founding in 1951. These individuals, elected by the ICCF , have typically served terms of several years, focusing on organizational growth, tournament expansion, and adaptation to technological changes. The presidency plays a central role in strategic direction, , and implementation of federation policies.
PresidentCountryTenureKey Focus
Jean-Louis OrmondSUI1951–1953Establishment of foundational bylaws and constitution.
Anders ElgesemNOR1953–1959Expansion of international tournaments and early membership growth.
Hans Werner von MassowGER1959–1987Global outreach and longest-serving term, emphasizing international participation during the era.
Hendrik MostertNED1987–1996Administrative reforms, including the launch of the ICCF rating system in 1989.
Alan BorwellSCO1996–2003Strengthening ties with and introduction of email-based tournaments.
Josef MrkvickaCZE2003–2004Transitional leadership and oversight of development.
Max Zavanelli (acting)USA2005Interim management following Mrkvicka's resignation.
Mohamed SamraouiALG2005–2009Push toward digital infrastructure and broader accessibility.
Eric RuchFRA2009–presentExpansion of the platform, anti-cheating protocols, and leadership of the 2025 online congress.
Hans Werner von Massow's 28-year tenure stands out for its role in fostering as a bridge across geopolitical divides during the , enabling participation from both Eastern and Western blocs through neutral tournament formats. His efforts included reintroducing the official journal Fernschach and establishing service medals, which enhanced the federation's diplomatic profile. Under Eric Ruch's ongoing presidency, the ICCF has prioritized technological modernization, including robust web server enhancements for secure play and the implementation of advanced anti-cheating measures to maintain game integrity. Ruch also chaired the 2025 Virtual Congress, conducted via online voting to adapt to global circumstances while ensuring continued . Several former presidents have been honored with lifetime titles as honorary presidents, recognizing their enduring contributions; notable recipients include von Massow (1987), Mostert (1996), and Borwell (2003). As of November 2025, Eric Ruch remains in office with no reported interim changes.

Congresses and Decision-Making

The International Correspondence Chess Federation (ICCF) has held annual congresses since its inception, serving as the organization's supreme legislative body responsible for guiding its strategic direction. The first congress took place in in 1951, shortly after the federation's founding on March 26, 1951, and subsequent early meetings continued in the same city through 1954 before shifting to various European locations, such as in 1956 and 1959. These gatherings initially convened in person, fostering direct collaboration among delegates from member federations on matters central to development. Over time, the format evolved to accommodate global participation, transitioning to hybrid and fully virtual models starting in 2020 due to logistical challenges, including the , with the 2025 congress conducted entirely online. ICCF congresses operate under statutes that define a structured process, chaired by the president to ensure orderly proceedings. Voting is conducted by delegates from member organizations, with no requirement and provisions for proxies limited to no more than three votes per individual, enabling broad representation. Major decisions, such as amendments to the statutes or bylaws, require a two-thirds of members present or represented, while routine approvals like the annual budget typically pass by simple majority. Common agenda items encompass budget ratification in euros for the (January 1 to December 31), approval of calendars, formulation of playing rules, and resolution of disputes among federations, all aimed at sustaining fair and innovative practices. Proposals must be submitted one month prior to the event, with notices distributed four months in advance to allow thorough preparation. In recent years, congresses have increasingly emphasized digital integration and organizational resilience. The 2025 virtual congress, held on October 4 from 11:00 to 15:00 UTC and livestreamed on , exemplified this shift, with proceedings potentially extending to October 11 if needed and voting results published on October 22. This format not only reduced costs but also facilitated real-time global input, aligning with post-2020 adaptations that blended in-person elements in prior years, such as the 2024 event in , . Through these mechanisms, the ICCF continues to adapt its governance to modern needs while upholding its foundational commitment to international .

Competitions

World and Continental Championships

The , organized by the ICCF, is the premier individual competition in , determining the global champion through a multi-stage qualification process culminating in a final . The event traces its origins to the inaugural championship, which ran from 1950 to 1953 and was won by Cecil J. S. Purdy of with a score of 11/13. Subsequent editions followed, with the second championship (1956–1959) claimed by Vyacheslav Ragozin of the . Since 1953, finals have generally been held biennially, though durations vary from three to four years due to the extended time controls. The format involves preliminaries open to qualified players, followed by semifinals, candidates' tournaments, and a final typically featuring 11 to 17 participants playing 16 games each under a of 10 moves in 50 days, with doubling after 20 days of reflection time. Early championships relied on postal correspondence, transitioning to a hybrid postal and system before fully adopting the ICCF in 2004, which streamlined play and reduced transmission delays. This shift marked a new era for the federation, enabling real-time moves while preserving the reflective nature of the game. Notable records include Alexander Dronov of , who secured three titles (22nd in 2007–2010, 27th in 2011–2014, and 29th in 2015–2018). The 32nd championship (2020–2022) was won by Jon Edwards of the on tiebreaks, while the 33rd (2022–2025), which concluded in August 2025, resulted in an unprecedented ten-way tie for first at 8.5/16 points among players including Javier Ros Padilla (), Angel Acevedo Villalba (), Tansel Turgut (), Olaf Hesse (), Valery Aleksandrov (), Pavel Sváček (), Ivan Panitevsky (), Mikhail Churkin (), Tiziano Mosconi (), and Daniel Fleetwood (). The unprecedented tie resulted from all 126 completed games ending in draws, with the 10 players receiving forfeit wins against Aleksandr Dronov, who passed away during the tournament, leaving those games unfinished. In addition to the world title, the ICCF organizes continental individual championships to foster regional competition and qualify players for global events, each following a similar multi-stage structure with semifinals and finals. The European Individual Championship, the longest-running continental event since its inception in 1954, features open participation for European players and has produced champions such as Jindřich Zapletal of Czechoslovakia in the second edition (1964–1967); the 75th final concluded on November 5, 2025, with a tie between Alberto Gueci of and Reidar Gramstad of . The American (Pan-American) Individual Championship began in 1968, serving players from North, Central, and , with early events like the 1971 edition seeding top finishers into world qualifiers; recent semifinals, such as the 2020 cycle, advanced section winners to finals based on tiebreak criteria including the Baumbach rule and Sonneborn-Berger scores. The Asian and Oceanian Individual Championship, established in , covers players from those regions and often integrates with zonal events for Zone 4 (), promoting development in emerging communities; it includes semifinals leading to a final, with qualification norms contributing to ICCF titles. These continental events, like their world counterpart, now primarily utilize the platform, ensuring consistent 3–4 year cycles and adherence to anti-cheating regulations.

Team Events and Olympiads

The International Correspondence Chess Federation (ICCF) organizes team events as a key component of its competitive calendar, fostering national representation and collective strategy in . These competitions, which include the flagship World Olympiad and regional championships, emphasize collaboration among players from member federations, contrasting with individual tournaments by requiring synchronized team performance across multiple boards. Teams typically consist of 6 to 8 players, with matches conducted via the ICCF to ensure fair play and anti-cheating measures. The World Correspondence Chess Olympiad, inaugurated in 1949 under the predecessor International Correspondence Chess Association (ICCA) and continued by the ICCF since 1951, serves as the premier team event, held every 2 to 3 years in preliminary and final rounds. Early editions featured 6-player teams with unlimited moves per year, but modern formats use a standard time control of 50 days for every 10 moves on the , with reflection time doubling after 20 consecutive days without a move to accommodate thoughtful analysis. The open section has seen dominance by Soviet and later Russian teams, which secured victories in the III through VIII s (1958–1982) and multiple titles thereafter, including the XVII through XIX (2010–2016), amassing over 15 wins and establishing a legacy of strategic depth and player depth. Notable exceptions include Hungary's inaugural win (I , 1949–1952) and Germany's recent triumph in the XXI (2018–2020). The women's section, introduced in the 1970s, follows a similar structure with 4 to 6 players per team; the claimed the first title (1974–1979), and continued the tradition with strong performances, though coverage of these events remains limited compared to the open category. The 23rd preliminaries began in January 2024, with the final scheduled for later, featuring 6-player teams and ongoing as of 2025. Regional team events complement the Olympiads by promoting zonal competition and development. The European Team Championship, launched in 1977, involves preliminary semifinals leading to a final round robin among top teams, typically over 8 boards with the same web server time controls as the Olympiad. has emerged as a frequent winner, claiming the 10th edition (2017–2021) with 51.5 points from 96 games, ahead of and , reflecting its consistent organizational strength and high-rated players. The Pan-American Team Championship, originating in 1974 (with precursors dating to 1969), adopts a similar format for Americas-based federations, starting with 6 to 8 boards and emphasizing regional rivalries; dominated early editions, such as the inaugural 1969 event, while the has achieved notable successes in recent cycles, including strong showings in the 10th edition (2011 onward). These events award team norms toward individual ICCF titles, with the 2025 cycle recognizing several norm achievements for participants. Overall, ICCF team events highlight the evolution from postal-based, multi-year marathons to efficient server play, promoting inclusivity across genders and regions while maintaining rigorous standards. Russia's historical edge, with over 20 Olympiad medals across open and women's sections, underscores the impact of state-supported training, though diverse winners like and demonstrate growing global parity.

Promotional and Specialized Tournaments

The International Correspondence Chess Federation (ICCF) organizes promotional tournaments structured in three graded classes—Open, Higher, and Master—to facilitate player development and rating improvement. These events allow participants to progress through levels based on performance, with the Open Class accessible via both postal and web-server formats, enabling and intermediate players to gain experience against rated opponents. ICCF Web Server Opens, introduced in as the inaugural digital format for such events, provide ongoing opportunities for players to compete in sectional tournaments with controls, often featuring entry fees that support operations while offering pathways to higher-rated divisions. These tournaments emphasize skill-building, with successful performances contributing to provisional and full ICCF ratings after 12 and 24 games, respectively. Thematic tournaments, dating back to the , require all games to begin with a predetermined opening variation, such as the King's Indian Defense, to encourage deep middlegame and endgame analysis over extensive opening preparation. By the late 1980s, these events attracted around 500 participants annually, fostering specialized study and innovation within fixed parameters. Examples include recent web-server thematic sections like the Blackmar-Diemer Gambit event (WSTT/4/24), which concluded in 2025. Specialized tournaments expand ICCF's offerings to include variants and targeted demographics. Chess960 events, introduced in 2011 to promote creative play by randomizing starting positions, feature dedicated world cups and invitational formats with standard correspondence time controls, such as the Chess960 Invitational Tournament that began on June 10, 2011. and junior competitions, restricted to players under 20, provide age-appropriate development through and events, aligning with ICCF's goal of nurturing emerging talent. Memorial tournaments honor notable figures, such as the Janko Bohak Memorial announced on October 8, 2025, which incorporates a criterion system for move forecasting, and the Biagio Bascetta Memorial, an open international event with multiple sections set to start on December 15, 2025, accommodating up to 200 players per section with entry deadlines in late November. These specialized formats often include modest entry fees and opportunities for norm achievements toward ICCF titles, enhancing accessibility and variety.

Titles and Ratings

Title Requirements and Awards

The International Correspondence Chess Federation (ICCF) awards titles to players based on performance norms achieved in designated international tournaments, with criteria emphasizing consistent high-level play against strong opposition. The highest title, Grandmaster (GM), requires 5 norms demonstrating a performance rating (PR) of at least 2600 over a minimum of 60 games in title tournaments, reducible via alternatives such as 2 norms over 24 games combined with finishing in the top three in the Final or as the highest scorer on board one in the Correspondence Chess Olympiad Final. Lower titles follow similar norm-based systems but with adjusted thresholds. The Senior International Master (SIM) title demands a PR of 2500 or higher, typically through 3 norms over 50 games in tournaments featuring at least category 4 opposition (average rating ≥2400). The International Master (IM) title requires a 2400 PR level across 3 norms over 40 games in category 3 or equivalent events (average ≥2300). Additionally, the Correspondence Chess Master (CCM) and Correspondence Chess Expert (CCE) titles recognize strong play at progressively lower levels, with CCM requiring 2 norms over 30 games in events with average opposition around 2250 and CCE over 20 games around 2125. Titles also require total minimum games: GM 60, SIM 50, IM 40, CCM 30, CCE 20. Norms are calculated using a performance rating formula that accounts for results and opponent strength: PR = average opponent rating + 800 × (score - 0.5), where score is the fraction of points earned, refined by expected winning probabilities against rated opponents to ensure the rating reflects the tournament's competitive depth. Tournaments qualifying for norms must include a diverse field, such as at least three federations, ≥75% players with 12+ rated games, and a minimum of 12 games per norm. Norms from promotional or specialized tournaments may contribute toward qualification, provided they meet ICCF standards. Titles are approved by the ICCF Qualifications Commissioner (QC) following verification of norms and overall eligibility; applications are submitted via national federations and confirmed in QC reports to the annual . Certificates are issued automatically via the ICCF server upon norm confirmation, with higher titles like GM also receiving formal recognition at , including medals for attendees. Separate women's titles, including Ladies Grandmaster (LGM, earnable until January 1, 2021) and Ladies International Master (LIM), exist alongside the open system, with pre-2016 LGM norms convertible toward CCM equivalents upon request.

Rating System and Achievements

The International Correspondence Chess Federation (ICCF) utilizes a revised recognized by , which builds on Elo principles but incorporates Rating Deviation (RD) from the Glicko method to better account for playing reliability and the high draw rates typical in . This system replaced the traditional Elo formula in 2023, using empirical data from over six years of ICCF games to model win, draw, and loss probabilities, with rating updates applied quarterly based on completed games in the preceding three months. Unrated players receive an initial rating of 1800 paired with an RD of 250, reflecting significant uncertainty that diminishes as games are played; FIDE-rated players new to ICCF start with an RD of 150. Ratings remain provisional while RD >75, generally after 20 to 30 games, after which they are considered more reliable; RD decreases with activity but increases gradually for inactivity (with adjustments at ). Rating changes are computed via iterative methods like one-step Newton-Raphson, factoring in the opponent's rating and RD, resulting in adjustments that effectively mimic a variable K-factor of 20 to 40 points—larger for players with high RD (less reliable ratings) and smaller for those with low RD. The 2025/4 rating list, published in 2025 and valid through December 31, 2025, features approximately 3,840 rated players worldwide, with full leaderboards available on iccf.com. Current top performers include Roman Chytilek of the at 2640 and David A. van der Hoeven of the at 2638, both holding ICCF Grandmaster titles. Among historical achievements, the all-time highest ICCF rating reached 2779, attained by Joop van Oosterom of the in , highlighting the system's capacity to reward sustained excellence in high-level correspondence play. Vytas Palciauskas of the , the 10th ICCF World Champion (1978–1984), exemplifies enduring accomplishment as an ICCF Grandmaster who dominated multiple elite events during his career. These peaks and sustained high ratings underscore the competitive depth, with around 3,800 active rated participants in 2025 demonstrating the federation's global reach.

Rules and Modern Practices

Play Formats and Platforms

The International Correspondence Chess Federation (ICCF) originally relied on postal correspondence for its events, where players submitted moves via postcards or letters through first-class or , including the sender's details, move number, and repetition of the opponent's last move. This traditional format featured time controls of 40 days for every 10 moves, with time in transit not counted against players, and penalties of 5 days for illegible or illegal moves. Although postal play persists in select events like promotion tournaments and the European Postal Championship, it now constitutes less than 5% of ICCF activities, having been largely supplanted by digital methods for greater efficiency. In 2004, the ICCF introduced its on iccf.com, revolutionizing play by enabling direct online move submission with immediate notifications to opponents and automated features such as claims and flag-fall tracking. events employ time controls of at least 30 days for 10 moves in rated tournaments, often extending to 50 days per 10 moves or the triple block system (a 50-day base clock, per-move increments of 1-9 days, and a 50-75 day bank), allowing for deeper analysis while preventing indefinite delays. Auto-adjudication handles routine by repetition, 50-move rule, or insufficient material, streamlining administration. Hybrid formats combining postal and were permitted through the but have since faded, with over 95% of events now fully web-based to enhance speed, , and global participation. Supporting platforms include submission using PGN notation as an alternative or supplement to postal play, subject to tournament director approval, and integration with third-party tools for move entry. Since 2020, mobile compatibility has expanded through apps like Your Move Correspondence Chess, which connect directly to the ICCF server for on-the-go play. This digital dominance is exemplified by the 75th European Individual Championship Final in 2025, conducted entirely on the .

Regulations and Anti-Cheating

The International Correspondence Chess Federation (ICCF) maintains a comprehensive set of regulations outlined in its official rules, effective from January 1, 2025, which incorporate updates approved by the 2024 . These rules govern move transmission, primarily through the automated ICCF for online play, where time controls begin upon an opponent's move commitment, or via postal methods such as first-class mail, airmail, or agreed-upon / for traditional events, ensuring all transmissions include full move details and player verification. Time forfeits are strictly enforced to promote timely play: in server-based events, exceeding the time limit—typically 40 days for 10 moves without submission—results in an automatic loss, with repeat offenses leading to escalating penalties including 30-day restrictions and up to 90-day suspensions; postal events allow one initial exceedance before forfeiture on the second. processes provide recourse, requiring submissions within 14 days to the ICCF Appeals Committee via the server, with final rulings binding unless involving adjudication disputes, which allow a single further appeal to a second adjudicator. Central to fair play is the ICCF Ethics Code, rooted in the "Amici Sumus" philosophy of and mutual respect among players, which explicitly prohibits , consultation with other humans for advice on active games, , offensive communications, and deliberate in lost positions (known as "dead man's defense" or DMD). While computer engines and public databases are permitted as personal analytical tools to reflect the analytical nature of , any form of external human assistance—such as discussing moves with others or using mirror games—constitutes a violation, with players required to self-certify compliance and eligibility upon registration and claims submission. Anti-cheating measures emphasize proactive enforcement through the Web Server's automated tracking of move timings and submissions, supplemented by post-event reviews; suspected violations trigger investigations by a three-person panel overseen by the World Tournament Director (WTD), focusing on patterns of irregular play or reported infractions rather than engine usage itself. Dispute resolution follows a structured hierarchy to ensure impartiality: minor issues are first addressed directly between players or via team captains in team events, while major concerns—including ethics breaches—must be reported to the Tournament Director (TD) within four days for initial ruling, with options to escalate unresolved matters to the WTD, Rules Director, or Appeals Committee. TDs hold authority to issue penalties such as warnings, clock adjustments (up to 50 days in certain formats), player substitutions under rating constraints, or suspensions, subject to oversight; severe offenses like repeated abandonment or can result in two-year bans, while egregious conduct—such as or related to play—may lead to lifetime exclusions. These mechanisms, updated in 2024 to include conditional move allowances in rated events and clarified protocols, aim to uphold integrity while adapting to digital platforms without relying on invasive real-time monitoring.

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