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Posers and Puzzles

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WHITE TO PLAY AND MATE IN 85



Given up already, Bowmann?

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Here is an easier one for you:



White to play - what result?
Black to play - what result?


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Originally posted by THUDandBLUNDER
WHITE TO PLAY AND MATE IN 85

[fen]8/N7/qN6/8/8/8/6N1/1k1KN3[/fen]

Given up already, Bowmann?
An asterisk denotes a unique winning move.

1.Nac8* Qa3 2.Nh4* Qb3+ 3.Ke2* Qb5+ 4.Kf2 Qb2+ 5.Kf1* Qb5+ 6.Kg1 Qg5+ 7.Neg2* Qf6 8.Kh2* Qe5+ 9.Kh3 Qe4 10.Kg3* Qe5+ 11.Kf3 Qf6+ 12.Ke3 Qh6+ 13.Kd3 Kc1 14.Kd4 Qg7+ 15.Ke4 Qg4+ 16.Ke5 Qg7+ 17.Ke6 Qc7 18.Kf6 Qc3+ 19.Kg6 Qg3+ 20.Kh5 Qe5+ 21.Kh6 Qh8+ 22.Kg5 Qd8+ 23.Kf4 Qc7+ 24.Kf3 Qh7 25.Kf2 Qc2+ 26.Kg3 Qc3+ 27.Nf3 Qg7+ 28.Kh3 Qf6 29.Kg4 Qe6+ 30.Kg3 Qg6+ 31.Kh2 Qc2 32.Nfh4 Qc7+ 33.Kg1 Qc5+ 34.Kh1 Kb1 35.Ng6 Qh5+ 36.N2h4 Qe2 37.Kg1 Kc2 38.Ng2* Qd1+ 39.Kh2* Kd3 40.Nd7 Ke4 41.Nc5+* Kd4 42.Ne6+* Ke4 43.Ng6f4 Ke5 44.Nb6 Qc2 45.Nd7+* Kd6 46.Ndf8* Ke7 47.Kg3* Qb1 48.Kg4 Kf7 49.Nh4* Qg1+ 50.Kh5 Qd1+ 51.Kh6 Qe1 52.Nhg6 Qa1 53.Nh5 Qh1 54.Nef4 Ke8 55.N8e6 Kd7 56.Kg5 Kd6 57.Nf6 Qe1 58.Ne8+ Kc6 59.Kf6 Kb6 60.Nd5+ Kb5 61.N8c7+ Ka5 62.Ngf4 Qa1+ 63.Ke7 Qa3+ 64.Kd7 Qa4+ 65.Kd6 Qa1 66.Nd8 Qa3+ 67.Kd7 Ka4 68.Nc6 Qa1 69.Nce6 Ka3 70.Kd6 Qc1 71.Ned4 Qf1 72.Kc5 Qc1+ 73.Kb5 Qf1+ 74.Nfe2 Qf7 75.Kc4 Qb7 76.Ndb4 Qh7 77.Nd3 Qg8+ 78.Kc3 Qd5 79.Nb2 Qg5 80.Ne5 Qh6 81.Nec4+ Ka2 82.Nd3 Kb1 83.Kb3 Qg7 84.Na3+ Ka1 85.Ndc2 mate.

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Originally posted by THUDandBLUNDER
Here is an easier one for you:

[fen]8/8/8/5N1N/8/3k1qN1/8/2K4N[/fen]

White to play - what result?
Black to play - what result?


WHITE TO PLAY LOSES: 1.Kb2 Qg2+ 2.Kb3 Qb7+* 3.Ka3 Qb6 4.Nf4+ Kc4* 5.Ka2 Qb3+* 6.Ka1 Kb4 7.Ng7 Ka3 8.Nge6 Qb2 mate.

BLACK TO PLAY LOSES: 1...Kc4 2.Kd2* Kd5 3.Ne3+ Ke5 4.Ng7 Qa8 5.N7f5 Qa5+ 6.Ke2 Qa2+ 7.Kf3 Qa8+ 8.Kf2 Qa1 9.Nh4 Ke6 10.Nf3 Qh8 11.Kg2 Qg8 12.Nf2 Kd6 13.Nd3 Qa2+ 14.Kh3 Qb1 15.Nfe5 Qa1 16.Ne4+ Ke6 17.Nf3 Kd7 18.Nde5+ Kd8 19.Kg4 Qc1 20.Nd5 Qc8+ 21.Kf4 Qe6 22.Nef6 Qh3 23.Nc6+ Kc8 24.Nfd4 Qh2+ 25.Kf5 Qh3+ 26.Ke5 Kb7 27.Ncb4 Qh2+ 28.Ke6 Kc8 29.Nf5 Qe2+ 30.Kd6 Qh2+ 31.Kc6 Kd8 32.Nd4 Qe5 33.Nb5 Qg3 34.Nd6 Qa3 35.Nb7+ Kc8 36.Nb6+ Kb8 37.Nfd5 Qa1 38.Nd6 Qc1+ 39.Kd7 Ka7 40.Nbc8+ Kb8 41.Na6+ Ka8 42.Ndb6 with a unique pure mate - a knight for each square.

http://www.xs4all.nl/~timkr/chess2/diary.htm (Entry 282)