Kacper Piorun (@gmsolver) header
Kacper Piorun (@gmsolver) profile picture

💫 Double Grandmaster in otb chess and chess solving, 🧩 6 times World Chess Solving Champion ♟️ 2 times Polish Chess Champion ♟️One Titled Tuesday's win

Joined March 2012
Puzzle of the week (#45/2026): from Bad Wiessee tournament, which ended poorly for me, but still some interesting moments. White refrained from playing tempting 1.Qd2-e3, which looks scary for Black. Can you see, why it doesn't work?
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1
20
3,871
Solution: Sacrifice the rook! 1.Rc8 and after Rxc8 2.Qe5 no more Bc8+; otherwise Qb4 and always keeping e1 square under control
Puzzle of the week #44/2026: from Australian website OzProblems. Can You find mate in 3 for White in 2 minutes?
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Puzzle of the week #44/2026: from Australian website OzProblems. Can You find mate in 3 for White in 2 minutes?
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1
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3,614
Solution: Newly-promoted queen is trapped!
Puzzle of the week (#43/2026) : Small endgame magic by Yochanan Afek. White to play and win, good luck!
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5,260
Puzzle of the week (#43/2026) : Small endgame magic by Yochanan Afek. White to play and win, good luck!
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8
4,868
Solution: The knight-mare distraction 1.Nd6!!
In my collection of puzzles of the week it deserves the spot! White to play! ( Puzzle of the week #42/2026)
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880
Solution: It works so fluently on the phone
Puzzle of the week #41/2026: @Wfcc_Chess updated the layout of their website, which looks much better. They also offer daily puzzles. So here is one from today. White to play and mate in 2 moves, gl!
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Puzzle of the week #41/2026: @Wfcc_Chess updated the layout of their website, which looks much better. They also offer daily puzzles. So here is one from today. White to play and mate in 2 moves, gl!
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366