<span id="BishopPawn7"></span>
=Bishop Pawn on 7th=
A similar draw motive occurs here with [[stalemate|stalemate]] after the queen captured the bishop pawn. The winning area of the attacking king requires a bit more calculation. Critical squares for the [[Distance|Chebyshev Distance]] are on the same rank on the [[Pawn Spans|luff-side]] two squares apart (i.e. for black pawn on c2, [[Distance|ϑ(♔,e2)]]),and the diagonal neighbouring square on the [[Pawn Spans|lee-side]] one rank back (i.e. for black pawn on c2, [[Distance|ϑ(♔,b3)]]). <ref>[[Interior Node Recognizer]] implemented work in [[IsiChess]]</ref>* Attacking king may reduce distance by [[Discovered Check|discovered check]]* With a <span style="background-color: #c0ffc0;">distance below two</span> to any of these critical squares, the game is won. * <span id="rule3"></span>A <span style="background-color: #cc80cc;">distance of two</span> to any of these critical squares is not sufficient, if the defending king is on the [[Pawn Spans|lee-side]], corner square (i.e. a1), or the 7th/8th (1st/2nd) rank on the knight file (i.e. b1, b2).* Exception: attacking king can immediately capture pawn {|| <fentt border="double" style="font-size:24pt">...Q..../......../......../{....}..../(...){K...}./(.+....){.}./(.kp.+.){.}./{kk.}(...){.}.</fentt>| <fentt border="double" style="font-size:24pt">.......Q/......../......../{....}..../(...){K...}./(.+....){.}./(.kp.+.){.}./{k..}(...){.}.</fentt>|-| Draw| Win due to [[Discovered Check|discovered check]]|}* A <span style="background-color: #cc80cc;">distance of two</span> is required to win the game otherwise{|| <fentt border="double" style="font-size:24pt">......../......../..Q...../{....}..K./(...){....}./(.+....){.}./(..pk+.){.}./{..k}(k..){.}.</fentt>| <fentt border="double" style="font-size:24pt">......../......../.......Q/{....}..K./(...){....}./(.+....){.}./(..pk+.){.}./{...}(...){.}.</fentt>| <fentt border="double" style="font-size:24pt">......../......../.......Q/{....}..K./(...){....}./(.+....){.}./(..p.+.){.}./{..k}(...){.}.</fentt>|-| Draw| Win due to [[Discovered Check|discovered check]]| Draw since check parried by [[#rule3|Kb1/b2]]|} =See also=* [[Draw Evaluation]]* [[Interior Node Recognizer]]* [[KPKP]] =Publications=* [https://en.wikipedia.org/wiki/Reuben_Fine Reuben Fine] ('''1941'''). ''[https://archive.org/details/basicchessending00reub Basic Chess Endings]''. [https://en.wikipedia.org/wiki/George_Bell_%26_Sons Bell & Sons]* [https://en.wikipedia.org/wiki/Yuri_Averbakh Yuri Averbakh], Victor Henkin, [https://en.wikipedia.org/wiki/Vitaly_Chekhover Vitaly Chekhover] ('''1986'''). ''Comprehensive Chess Endings 3: Queen Endings''. [https://en.wikipedia.org/wiki/Pergamon_Press Pergamon Press]* [[Karsten Müller]], [https://en.wikipedia.org/wiki/Frank_Lamprecht Frank Lamprecht] ('''2001'''). ''[http://www.gambitbooks.com/books/Fundamental_Chess_Endings.html Fundamental Chess Endings]''. [https://en.wikipedia.org/wiki/Gambit_Publications Gambit Publications]* [https://en.wikipedia.org/wiki/Reuben_Fine Reuben Fine], [https://en.wikipedia.org/wiki/Pal_Benko Pal Benko] ('''2003'''). ''[https://en.wikipedia.org/wiki/Basic_Chess_Endings Basic Chess Endings]''. [https://en.wikipedia.org/wiki/David_McKay_Publications McKay]* [https://en.wikipedia.org/wiki/Yasser_Seirawan Yasser Seirawan] ('''2003'''). ''[https://dl.acm.org/doi/book/10.5555/1200939 Winning Chess Endings]''progress . [https://en.wikipedia.org/wiki/Everyman_Chess Everyman Chess]
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