Every position here is a real decision from a real grandmaster game.

Not a constructed puzzle. The actual turning point, found by scanning this week’s games and checked against the engine.

31,667 positions · 1,753 grandmasters · 277,367 games read

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What this is

We read every game the world’s grandmasters play, and look for the ply where the game actually turned. The engine checks the answer before it reaches you, and the positions are ranked by how much they teach rather than how hard they are. What you get is the decision, at the moment it mattered, with nothing explained away in advance.

Every one of these is a real game

Pick any of them.

Torre: jesper_kjaergaard-jensen versus chessdjwTorre jesper_kjaergaard-jensen vs chessdjwReti Opening: scrapnel versus chesstrailReti Opening scrapnel vs chesstrailIndian Game: federico696 versus dynamischestrategieIndian Game federico696 vs dynamischestrategieSicilian Defense: gmg versus timgrutter03Sicilian Defense gmg vs timgrutter03Dutch Defense: gmg versus joeassaadDutch Defense gmg vs joeassaadSicilian Defense: tnxforfreetrial1 versus levqcqSicilian Defense tnxforfreetrial1 vs levqcqIndian Game: adar_07 versus ykow2Indian Game adar_07 vs ykow2King's Indian Attack: incognito_knight versus kingsmaskKing's Indian Attack incognito_knight vs kingsmaskRuy Lopez Opening: dyadya81 versus oneofmyturnsRuy Lopez Opening dyadya81 vs oneofmyturns

A rating for reading a position

Brilliancy Elo is not the same skill as playing a game out. It moves on your first attempt at each position, it is the same number on every device you sign in on, and a peek or a reveal counts against it. That is the point: the number is only worth having if it can go down.

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