forced mate ?

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xr_a_y
Posts: 1871
Joined: Sat Nov 25, 2017 2:28 pm
Location: France

forced mate ?

Post by xr_a_y »

is there a forced mate here

[d] r2q1r1k/2pbb2p/p3p3/1p1p1P2/4nP2/1PN1PN1P/PBPPQ3/2K3R1 w - - 4 18

starting with Nxe4

As almost everything is win from here ...

[pgn]
[Event "Rated Bullet game"]
[Site "https://lichess.org/CwNZcdTl"]
[Date "2020.03.16"]
[Round "-"]
[White "xr_a_y"]
[Black "bedo777"]
[Result "1-0"]
[UTCDate "2020.03.16"]
[UTCTime "15:46:30"]
[WhiteElo "1652"]
[BlackElo "1833"]
[WhiteRatingDiff "+9"]
[BlackRatingDiff "-8"]
[Variant "Standard"]
[TimeControl "90+2"]
[ECO "A02"]
[Opening "Bird Opening"]
[Termination "Normal"]
[Annotator "lichess.org"]

1. f4 { A02 Bird Opening } Nc6 2. e3 f5 3. Nf3 Nf6 4. Bd3 e6 5. Nc3 Be7 6. b3 O-O 7. Bb2 a6 8. Qe2 d5 9. O-O-O b5 10. h3 Bd7 11. Rdg1 Nb4 12. g4 Nxd3+ 13. Qxd3 Ne4 14. gxf5 Nf2 15. Rxg7+ Kxg7 16. Rg1+ Kh8 17. Qe2 Ne4 18. Nxe4+ { Black resigns. } 1-0
[/pgn]
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: forced mate ?

Post by zullil »

xr_a_y wrote: ↑Mon Mar 16, 2020 4:53 pm is there a forced mate here

[d] r2q1r1k/2pbb2p/p3p3/1p1p1P2/4nP2/1PN1PN1P/PBPPQ3/2K3R1 w - - 4 18

starting with Nxe4

As almost everything is win from here ...

[pgn]
[Event "Rated Bullet game"]
[Site "https://lichess.org/CwNZcdTl"]
[Date "2020.03.16"]
[Round "-"]
[White "xr_a_y"]
[Black "bedo777"]
[Result "1-0"]
[UTCDate "2020.03.16"]
[UTCTime "15:46:30"]
[WhiteElo "1652"]
[BlackElo "1833"]
[WhiteRatingDiff "+9"]
[BlackRatingDiff "-8"]
[Variant "Standard"]
[TimeControl "90+2"]
[ECO "A02"]
[Opening "Bird Opening"]
[Termination "Normal"]
[Annotator "lichess.org"]

1. f4 { A02 Bird Opening } Nc6 2. e3 f5 3. Nf3 Nf6 4. Bd3 e6 5. Nc3 Be7 6. b3 O-O 7. Bb2 a6 8. Qe2 d5 9. O-O-O b5 10. h3 Bd7 11. Rdg1 Nb4 12. g4 Nxd3+ 13. Qxd3 Ne4 14. gxf5 Nf2 15. Rxg7+ Kxg7 16. Rg1+ Kh8 17. Qe2 Ne4 18. Nxe4+ { Black resigns. } 1-0
[/pgn]
Mate in 12 18. Nxe4+ d4 19. Bxd4+ Bf6 20. Nxf6 Rxf6 21. Qg2 Qe7 22. Ne5 Bc6 23. Nxc6 Qa3+ 24. Kd1 Qf8 25. Qg5 e5 26. Bxe5 h6 27. Bxf6+ Qxf6 28. Qxf6+ Kh7 29. Qg7# (depth 41, 0:00:17)
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mhouppin
Posts: 115
Joined: Wed Feb 12, 2020 5:00 pm
Full name: Morgan Houppin

Re: forced mate ?

Post by mhouppin »

Acording to Stockfish dev:

Code: Select all

info depth 58 seldepth 24 multipv 1 score mate 12 nodes 258775529 nps 2315871 hashfull 947 tbhits 0 time 111740 pv c3e4 d5d4 b2d4 e7f6 e4f6 f8f6 e2g2 d8e7 f3e5 d7c6 e5c6 e7a3 c1b1 a3f8 g2g5 e6e5 d4e5 h7h6 e5f6 f8f6 g5f6 h8h7 f6g7
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User avatar
xr_a_y
Posts: 1871
Joined: Sat Nov 25, 2017 2:28 pm
Location: France

Re: forced mate ?

Post by xr_a_y »

Thanks !

what crazy engine/hardware is doing this depth 41 search in 0:00:17 !?.
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: forced mate ?

Post by Vinvin »

xr_a_y wrote: ↑Mon Mar 16, 2020 6:43 pm Thanks !

what crazy engine/hardware is doing this depth 41 search in 0:00:17 !?.
Not so fast for this position.
My old 6 cores reaches depth 50 in 18 seconds :

Code: Select all

FEN: r2q1r1k/2pbb2p/p3p3/1p1p1P2/4nP2/1PN1PN1P/PBPPQ3/2K3R1 w - - 4 18

Stockfish_20011801_x64_modern:
...
 34/42+	00:05	 59 148 729	11 074 467	+79,28	18.Nxe4+
 34/42+	00:05	 64 383 680	11 081 528	+M25	18.Nxe4+
 34/42	00:06	 67 352 093	11 066 725	+M19	18.Nxe4+ d4 19.Bxd4+ Rf6 20.Nfg5 Be8 21.Qg2 Bg6 22.Nf7+ Kg7 23.fxg6 e5 24.Nxd8 Rxg6 25.Bxe5+ Kf8 26.Ng5 Ba3+ 27.Kd1 Rxd8 28.Nxh7+ Ke7 29.Qxg6 Rxd2+ 30.Kxd2 Bb4+ 31.Kd1 Bd6 32.Qe4 Bxe5 33.Qxe5+ Kd7 34.Qd5+ Ke8 35.Qe6+ Kd8 36.Rg8+
 35/38	00:08	 93 659 186	10 890 603	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 36/24	00:08	 94 349 401	10 879 774	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 37/24	00:08	 94 859 865	10 864 719	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 38/24	00:08	 95 267 736	10 861 673	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 39/24	00:08	 95 700 246	10 854 059	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 40/24	00:09	 98 179 200	10 775 897	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 41/24	00:09	 103 146 651	10 688 772	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 42/24	00:10	 106 831 283	10 656 487	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 43/24	00:10	 110 429 666	10 660 263	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 44/24	00:10	 115 895 004	10 671 731	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 45/24	00:11	 118 112 628	10 656 137	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 46/24	00:11	 120 315 673	10 631 410	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 47/24	00:12	 130 131 418	10 630 783	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 48/24	00:12	 131 298 370	10 624 564	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 49/24	00:13	 145 725 624	10 636 130	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
 50/24	00:18	 200 992 948	10 618 254	+M12	18.Nxe4+ d4 19.Bxd4+ Bf6 20.Nxf6 Rxf6 21.Qg2 Qe7 22.Ne5 Bc6 23.Nxc6 Qa3+ 24.Kb1 Qf8 25.Qg5 e5 26.Bxe5 h6 27.Bxf6+ Qxf6 28.Qxf6+ Kh7 29.Qg7+
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