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23 votes
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Is it possible to create a board position where White must make the move that leads to stalemating Black to avoid Black stalemating White?

Here is a slightly less cluttered version: [FEN "7k/6p1/6PP/8/8/1p6/pP6/K7 w - - 0 1"]
bof's user avatar
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9 votes

Is it possible to create a board position where White must make the move that leads to stalemating Black to avoid Black stalemating White?

Thanks to Rewan Demontay for the inspiration! [Title "Stalemate or Be Stalemated"] [FEN "8/6pp/6pk/6p1/6P1/6PK/6PP/5r1R w - - 0 1"] [startflipped ""] 1. Rxf1 {White ...
dbergan's user avatar
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2 votes
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Can a series of legal moves end in this position?

Sure. [fen ""] 1. b4 a5 2. bxa5 h5 3. g4 b5 4. a4 c5 5. axb5 d5 6. d4 e6 7. dxc5 f5 8. e4 g6 9. exf5 Nd7 10. a6 Rb8 11. a7 Rb7 12. a8=Q Ne7 13. fxg6 Ne5 14. g7 Rh6 15. g8=Q Bd7 16. Qg5 Nf5 ...
D M's user avatar
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3 votes

Threefold repetition: what's the minimum number of pieces and/or material points required?

[FEN "8/8/8/8/8/7p/8/5K1k w - - 0 1"] In this position, white's best is 1.Kf2 to force threefold repetition with 1...Kh2 2.Kf1 Kh1 etc. Of course black can deviate, but that's also a draw (...
RemcoGerlich's user avatar
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9 votes
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Threefold repetition: what's the minimum number of pieces and/or material points required?

4 pieces is the minimum, and is attained by this position though Black has the option of trading Q for N to a bare-king draw: [Title "Draw by perpetual check or insufficient material"] [FEN &...
Noam D. Elkies's user avatar

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