World Chess Solving Championship
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The World Chess Solving Championship (WCSC) is an annual competition in the solving of
chess problem A chess problem, also called a chess composition, is a puzzle created by the composer using chess pieces on a chessboard, which presents the solver with a particular task. For instance, a position may be given with the instruction that White is t ...
s (also known as chess puzzles) organized by the World Federation for Chess Composition (WFCC), previously by
FIDE The International Chess Federation or World Chess Federation, commonly referred to by its French acronym FIDE ( , ), is an international organization based in Switzerland that connects the various national chess federations and acts as the Spor ...
via the Permanent Commission of the FIDE for Chess Compositions (PCCC). The participants must solve a series of different types of chess problem in a set amount of time. Points are awarded for correct solutions in the least amount of time. The highest score at the end of the competition is proclaimed the winner.


Format

The Tournament consists of six rounds over two days, with three rounds each day according to the following table: *Round 1 – 3 twomovers 20 minutes solving time *Round 2 – 3 threemovers 60 minutes solving time *Round 3 – 3
endgame studies In the game of chess, an endgame study, or just study, is a type of chess problem that starts with a composed position—i.e. one that has been made up rather than played in an actual game—where the goal is to find the essentially unique way for ...
100 minutes solving time *Round 4 – 3
helpmate A helpmate is a type of chess problem in which both sides cooperate in order to achieve the goal of checkmating Black. In a helpmate in ''n'' moves, Black moves first, then White, each side moving ''n'' times, to culminate in White's ''nth'' m ...
s 50 minutes solving time *Round 5 – 3 moremovers 80 minutes solving time *Round 6 – 3
selfmate A selfmate is a chess problem in which White, moving first, must force Black to deliver checkmate within a specified number of moves. Selfmates were once known as sui-mates. Example The problem shown is a relatively simple example. It is a sel ...
s 50 minutes solving time


Sections

*Team Championship – To qualify as an official team world championship, there must be at least seven teams from seven countries present. This section has grown from nine teams in 1977 to now averaging 20. *Individual – Likewise, for an official individual world championship to take place, 30 solvers from at least 10 countries must participate. This number too has grown from 18 in 1977 to well over 70 in the past six years (as of 2007). *Women and Juniors (up to 23 years old) – This event only requires 10 solvers from at least seven countries.


Rating


Formulas

We assume that the tournament has n solvers, with ratings R_i (i = 1, ..., n) and in the tournament their scores are S_i (i = 1, ..., n). *AveRat = average rating of the solvers *AveSco = average score of the solvers *VarRat = \frac1n \sum_^ (R_i - \mbox)^2 *Covar =
covariance In probability theory and statistics, covariance is a measure of the joint variability of two random variables. The sign of the covariance, therefore, shows the tendency in the linear relationship between the variables. If greater values of one ...
between ratings and scores = (\frac1n \sum_^ R_i S_i) - \mbox \cdot \mbox *Slope = \frac\mbox\mbox *Intercept = \mbox - \mbox \cdot \mbox For players who didn't already have a rating, a preliminary rating is calculated. This rating is determined at the end of the first tournament in which the solver has participated. The formula that is used to calculate this rating is: *preliminary rating = \frac\mbox For players who already have a rating, the new rating is calculated as follows. *Rat = most recent rating of the solver *ExpSco = \mbox \cdot \mbox + \mbox *TC = tournament coefficient, a number between 1 and 4; when the tournament is stronger, the TC is higher *ChangeRat = \mbox \cdot (\mbox - \mbox) *NewRat = new rating = \mbox + \mbox These formulas are the defaults. If parameters fall outside a predetermined range, correction calculations are being carried out. These can be found in the reference.


Rating list in 2015

October 1st 2015, Top 10: # GM Georgy Evseev (
Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
) 2785 # GM Kacper Piorun (
Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...
) 2744 # GM Piotr Murdzia (Poland) 2742 # GM
John Nunn John Denis Martin Nunn (born 25 April 1955) is an English chess grandmaster, a three-time world champion in chess problem solving, a chess writer and publisher, and a mathematician. He is one of England's strongest chess players and was form ...
(
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
) 2716 # GM Ram Soffer (
Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...
) 2667 # GM Eddy Van Beers (
Belgium Belgium, officially the Kingdom of Belgium, is a country in Northwestern Europe. Situated in a coastal lowland region known as the Low Countries, it is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeas ...
) 2632 # GM Anatoly Mukoseev (Russia) 2631 # GM Arno Zude (
Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
) 2626 # GM Jonathan Mestel (United Kingdom) 2595 # GM Ofer Comay (Israel) 2594


Rating list in 2023

July 1st 2023, Top 10: # GM Danila Pavlov (
Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
) 2776 # GM Georgy Evseev (Russia) 2747 # Andrei Zhuravlev (Russia) 2683 # GM Piotr Murdzia (
Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...
) 2661 # GM Kacper Piorun (Poland) 2645 # GM Eddy Van Beers (
Belgium Belgium, officially the Kingdom of Belgium, is a country in Northwestern Europe. Situated in a coastal lowland region known as the Low Countries, it is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeas ...
) 2636 # GM
John Nunn John Denis Martin Nunn (born 25 April 1955) is an English chess grandmaster, a three-time world champion in chess problem solving, a chess writer and publisher, and a mathematician. He is one of England's strongest chess players and was form ...
(
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
) 2630 # GM Ram Soffer (
Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...
) 2604 # IM Ural Khasanov (Russia) 2602 # Kevinas Kuznekovas (
Lithuania Lithuania, officially the Republic of Lithuania, is a country in the Baltic region of Europe. It is one of three Baltic states and lies on the eastern shore of the Baltic Sea, bordered by Latvia to the north, Belarus to the east and south, P ...
) 2567


Winners


Team competition

*1977 – *1978 – 25px Finland *1979 – *1980 – *1981 – 25px Finland *1982 – *1983 – 25px Finland *1984 – 25px Finland *1985 – 25px Finland *1986 – *1987 – 25px West-Germany *1988 – 25px West-Germany *1989 – *1990 – and *1991 – *1992 – *1993 – *1994 – 25px Germany *1995 – *1996 – *1997 – 20px Israel *1998 – *1999 – *2000 – *2001 – *2002 – 25px Germany *2003 – *2004 – *2005 – *2006 – *2007 – *2008 – *2009 – *2010 – 25px Poland *2011 – *2012 – *2013 – *2014 – *2015 – *2016 – *2017 – *2018 – *2019 – 25px Poland *2021 – *2022 – *2023 – *2024 –


Individual competition

*1983 – Roland Baier (
Switzerland Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland ...
) *1984 – Kari Valtonen (
Finland Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, ...
) *1985 – Ofer Comay (
Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...
) *1986 – Pauli Perkonoja (Finland) *1987 – Michel Caillaud (
France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
) *1988 – Michael Pfannkuche (
Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
) *1989 – Georgy Evseev (
USSR The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
) *1990 – Georgy Evseev (USSR) *1991 – Georgy Evseev (USSR) *1992 – Pauli Perkonoja (Finland) *1993 – Michael Pfannkuche (Germany) *1994 – Arno Zude (Germany) *1995 – Pauli Perkonoja (Finland) *1996 – Noam Elkies (Israel) *1997 – Jonathan Mestel (
Great Britain Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...
) *1998 – Georgy Evseev (
Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
) *1999 – Ofer Comay (Israel) *2000 – Michel Caillaud (France) *2001 – Jorma Paavilainen (Finland) *2002 – Piotr Murdzia (
Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...
) *2003 – Andrey Selivanov (Russia) *2004 –
John Nunn John Denis Martin Nunn (born 25 April 1955) is an English chess grandmaster, a three-time world champion in chess problem solving, a chess writer and publisher, and a mathematician. He is one of England's strongest chess players and was form ...
(Great Britain) *2005 – Piotr Murdzia (Poland) *2006 – Piotr Murdzia (Poland) *2007 –
John Nunn John Denis Martin Nunn (born 25 April 1955) is an English chess grandmaster, a three-time world champion in chess problem solving, a chess writer and publisher, and a mathematician. He is one of England's strongest chess players and was form ...
(Great Britain) *2008 – Piotr Murdzia (Poland) *2009 – Piotr Murdzia (Poland) *2010 –
John Nunn John Denis Martin Nunn (born 25 April 1955) is an English chess grandmaster, a three-time world champion in chess problem solving, a chess writer and publisher, and a mathematician. He is one of England's strongest chess players and was form ...
(Great Britain) *2011 – Kacper Piorun (Poland) *2012 – Piotr Murdzia (Poland) *2013 – Piotr Murdzia (Poland) *2014 – Kacper Piorun (Poland) *2015 – Kacper Piorun (Poland) *2016 – Kacper Piorun (Poland) *2017 – Kacper Piorun (Poland) *2018 – Piotr Murdzia (Poland) *2019 – Piotr Górski (Poland) *2021 – Danila Pavlov (Russia) *2022 – Danila Pavlov (Russia) *2023 – Danila Pavlov (Russia) *2024 – Kacper Piorun (Poland)


References

{{Chess Solving Chess problems