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3 votes
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USSR Championships vs Candidates strength

The USSR championship was actually the usual way for USSR players to qualify for the Interzonal. This was an international tournament, generally featuring a number of the best players in the world, ...
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-3 votes

What are the different rules for claiming a draw?

If I remember correctly from when I was first learning chess, draws can result from: Agreement 50 move 3 fold Not enough material to mate
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What are the different rules for claiming a draw?

For comparison, here's the rule under USCF. It's broadly similar to FIDE's in that you write but not make the move and stop the clock, but the penalty for a rejected claim is 2 minutes instead of 3. ...
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What is the origin of the chess pieces' movements?

If there are no convincing sources, we could set out ourselves, looking for an irrevocable- be it a mathematical or poetic- logic in the ensemble of a game's pieces. We could try to find it in chess, ...
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8 votes
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What type of notation is "B3", as used by Lasker?

This is descriptive notation, a composition where the letter B stands for bishop and the number 3 for the third rank from either players view. Thus, as mentioned in your box, B3 may refer to the ...
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1 vote

What are the different rules for claiming a draw?

My brother claimed a draw in England some years ago and then the arbiter told him that he should not have written down his move before he claimed the draw (his GM opponent then deviated and avoided ...
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4 votes

Which GM said something along the lines of "I can beat any chess engine; just give me time enough (to prevent blunders)"

GM Larry Kaufman said something along those lines in a 2019 interview: (emphasis added) The main reason Komodo is a thousand or more Elo stronger than I am is that it searches so much further ahead ...
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1 vote

Countermove without notation

did the invention of the Fischer mode (meaning you must then notate even in time trouble) change anything? Most certainly. It meant the virtual demise of the infamous "10.2". This in turn ...
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7 votes
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The most often played chess game

The most played game: a drawing line The most played game in the TWIC database (issues 920 to 1438, containing about 1.8 million tournament games) is the following one, which appears 111 times. I add ...
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6 votes

What was the highest rated classical game that was lost on time?

Not sure if this is the all-time highest-rated classical game ever lost on time but Magnus Carlsen's game against Veselin Topalov from Round 1 of Norway Chess 2013 was lost on time. Yes, one more loss ...
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