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Plus: in this week’s puzzle — can you checkmate like the Bletchley codebreaker?
In this week’s puzzle — find the GM’s hidden winning moves
Puzzle: find White’s winning move
In this week’s puzzle: White failed to find the best move — can you do better?
In this week’s puzzle: find White’s hidden checkmate in two
Plus: in this week’s puzzle — find Carlsen’s winning move
Puzzle: can you solve this picturesque mate in two?
Puzzle: how can White strike first?
Puzzle: how did the English amateur checkmate the US grandmaster?
Puzzle: White to move and win
Puzzle: find White’s immediately winning move
Puzzle: how could Black have beaten Carlsen?
In this week’s puzzle: White lost. How could he have won?
In this week’s puzzle: find the imaginative route to victory
Grandmaster, 19, accuses champion Magnus Carlsen and others of slander in affair that has rocked game’s elite echelons
Puzzle: can you mate in three in 15 minutes?
Puzzle: find the US champion’s winning move
Computer chess and online games are riddled with rule-breaking but the penalties are lax
Puzzle: How did the all-time No1 woman escape the double checkmate threat?
As technology helps players calculate their odds, it also helps to catch those trying to manipulate them
World champion Magnus Carlsen’s dispute with a teenage rival has sparked wild rumours of dirty tricks
Puzzle: find the grandmaster’s winning move
Puzzle: can you find the snag in the solution?
Puzzle: find the hidden route through Black’s defences