This goes back a few years...but here is a solution
[d]3R1N2/2p1p2N/4p3/6p1/2P1P1qk/3PP3/P4K2/8 w - - 0 1
It appears to be a mate in 35...
FEN: 3R1N2/2p1p2N/4p3/6p1/2P1P1qk/3PP3/P4K2/8 w - - 0 1
87 21:28 13,011,672k 10,102k +M35 1.Ng6+ Kh5 2.Nf6+ exf6 3.Ne5 fxe5 4.Rh8+ Kg6 5.Rh1 Kf7 6.a4 Ke8 7.a5 Kd8 8.a6 Kc8 9.Rh8+ Kd7 10.a7 Qd1 11.Rh7+ Kd6 12.a8Q Qd2+ 13.Kg3 Qxe3+ 14.Kg4 Qe2+ 15.Kxg5 Qg2+ 16.Kh6 Qh1+ 17.Kg6 Qg1+ 18.Kf7 Qf1+ 19.Ke8 Kc5 20.Qa7+ Kb4 21.Qxc7 Kb3 22.Qxe5 Qc1 23.c5 Qa3 24.Rh2 Qa4+ 25.Kf8 Qa8+ 26.Kf7 Qb7+ 27.Kf6 Qb4 28.Rb2+ Ka4 29.Rxb4+ Kxb4 30.Qb2+ Kxc5 31.Kxe6 Kc6 32.Qb4 Kc7 33.Qb5 Kc8 34.Kd6 Kd8 35.Qd7+
Complex Puzzle
Moderator: Ras
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MOBMAT
- Posts: 396
- Joined: Sat Feb 04, 2017 11:57 pm
- Location: USA
Re: Complex Puzzle
i7-6700K @ 4.00Ghz 32Gb, Win 10 Home, EGTBs on PCI SSD
Benchmark: Stockfish15.1 NNUE x64 bmi2 (nps): 1277K
Benchmark: Stockfish15.1 NNUE x64 bmi2 (nps): 1277K
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acase
- Posts: 994
- Joined: Wed Mar 15, 2006 1:14 am
- Location: Columbus, Ohio USA
- Full name: Andrew R Case
Re: Complex Puzzle
It looks like you were correct Nordlandia.Nordlandia wrote: ↑Sat Jan 14, 2017 9:09 am Fortress draw!
Anything other than 1...exf3 is probably winning for black, however <greed> engines can't detect fortification...
[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "6bk/5pp1/3N1p1b/8/4p1p1/5PPp/4pPNP/4K3 w - - 0 0"]
[PlyCount "8"]
1. Nh4 exf3 2. Ng6+ fxg6 3. Nf7+ Kh7 4. Ng5+ fxg5 *
[/pgn]
Code: Select all
6bk/5pp1/3N1p1b/8/4p1p1/5PPp/4pPNP/4K3 w - - 0 0
