Critter does not see Mate in 9 ...

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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

Critter does not see Mate in 9 ...

Post by pilgrimdan »

1.d4 Nf6 2.e3 b6 3.Be2 e6 4.Nd2 Bb7 5.Ngf3 Be7 6.O-O O-O 7.c4 d5 8.b3 Bb4 9.Bb2 Nbd7 10.a3 Bd6 11.Ne5 Nb8 12.Ndf3 dxc4 13.bxc4
Ne4 14.Qc2 Ng5 15.Nxg5 Qxg5 16.Bf3 c6 17.e4 Bxe5 18.dxe5 Qe7 19.Rfd1 c5 20.Rd2 a5 21.Rad1 Ra7 22.Rd6 Bc6 23.g3 Qc7 24.Bg2 Kh8
25.f4 Kg8 26.f5 Be8 27.f6 h6 28.g4 Bc6 29.R1d3 b5 30.Qd2 bxc4

[d]1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/2p1P1P1/P2R4/1B1Q2BP/6K1 w - - 0 31

31.Rh3
31. ...c3 32.Bxc3 Re8 33.Rxh6 Qe7 34.Qg5 Qf8 35.Rh3 Rb7 36.Qh4
Rb1+ 37.Kf2 Rb2+ 38.Bxb2 gxf6 39.Qh7# 1-0
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Critter does not see Mate in 9 ...

Post by Vinvin »

32...Re8 is a mistake.

After 31. Rh3 c3 32. Bxc3 , SF-Matefinder with 5 best moves finds mate in 12 with Qb7 or c4 :

Code: Select all

 FEN: 1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/4P1P1/P1B4R/3Q2BP/6K1 b - - 0 32

Matefinder_20190305:
 28/23	00:18	 64 539k	3 465k	+M9	32. ... Qxd6 33.exd6 e5 34.fxg7 f6 35.gxf8Q+ Kxf8 36.Qxh6+ Kf7 37.Bxe5 Bd5 38.exd5 Nd7 39.Qh7+ Kf8 40.Qg6 fxe5 41.Rh8+
 28/19	00:18	 64 539k	3 465k	+M9	32. ... Rb7 33.Rxh6 Rb1+ 34.Bf1 Qa7 35.Qg5 Rxf1+ 36.Kxf1 Qa6+ 37.Kf2 Qf1+ 38.Kxf1 g6 39.Rh8+ Kxh8 40.Qh6+ Kg8 41.Qg7+
 29/23	00:18	 64 539k	3 465k	+M9	32. ... Qb6 33.fxg7 c4+ 34.Bd4 f6 35.gxf8Q+ Kxf8 36.Qxh6+ Rg7 37.Bxb6 Nd7 38.exf6 Nxf6 39.Qxf6+ Kg8 40.Rd8+ Be8 41.Rxe8+
 29/25	00:18	 64 539k	3 465k	+M12	32. ... Qb7 33.fxg7 f5 34.gxf8R+ Kxf8 35.Rd8+ Be8 36.Qxh6+ Qg7 37.Qxe6 Re7 38.Qxf5+ Rf7 39.Qe6 Rf1+ 40.Bxf1 Qxg4+ 41.Qxg4 Ke7 42.Rh7+ Bf7 43.Qg5+ Ke6 44.Qf6+
 29/25	00:18	 64 539k	3 465k	+M12	32. ... c4 33.fxg7 f5 34.gxf8Q+ Kxf8 35.Qxh6+ Qg7 36.Rd8+ Kf7 37.exf5 Qxh6 38.Rxh6 Be8 39.Rh7+ Kf8 40.Rxa7 Nd7 41.Raxd7 exf5 42.gxf5 a4 43.Bb4+ Kg8 44.Rxe8+
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Critter does not see Mate in 9 ...

Post by zullil »

id name Critter 1.6a 64-bit
id author Richard Vida

info multipv 1 depth 28 seldepth 60 nodes 11044090126 time 431506 nps 25594290 hashfull 1000 tbhits 0 score mate 13 pv d3h3 c4c3 b2c3 c5c4 h3h6 c7b6 d6d4 b6b1 g2f1 c6e4 f6g7 b1f1 g1f1 g8g7 d2g5 e4g6 g5f6 g7h6 g4g5 h6h7 d4h4 g6h5 h4h5 h7g8 f6h8
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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

Re: Critter does not see Mate in 9 ...

Post by pilgrimdan »

Vinvin wrote: ↑Sat Mar 09, 2019 10:50 am 32...Re8 is a mistake.

After 31. Rh3 c3 32. Bxc3 , SF-Matefinder with 5 best moves finds mate in 12 with Qb7 or c4 :

Code: Select all

 FEN: 1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/4P1P1/P1B4R/3Q2BP/6K1 b - - 0 32

Matefinder_20190305:
 28/23	00:18	 64 539k	3 465k	+M9	32. ... Qxd6 33.exd6 e5 34.fxg7 f6 35.gxf8Q+ Kxf8 36.Qxh6+ Kf7 37.Bxe5 Bd5 38.exd5 Nd7 39.Qh7+ Kf8 40.Qg6 fxe5 41.Rh8+
 28/19	00:18	 64 539k	3 465k	+M9	32. ... Rb7 33.Rxh6 Rb1+ 34.Bf1 Qa7 35.Qg5 Rxf1+ 36.Kxf1 Qa6+ 37.Kf2 Qf1+ 38.Kxf1 g6 39.Rh8+ Kxh8 40.Qh6+ Kg8 41.Qg7+
 29/23	00:18	 64 539k	3 465k	+M9	32. ... Qb6 33.fxg7 c4+ 34.Bd4 f6 35.gxf8Q+ Kxf8 36.Qxh6+ Rg7 37.Bxb6 Nd7 38.exf6 Nxf6 39.Qxf6+ Kg8 40.Rd8+ Be8 41.Rxe8+
 29/25	00:18	 64 539k	3 465k	+M12	32. ... Qb7 33.fxg7 f5 34.gxf8R+ Kxf8 35.Rd8+ Be8 36.Qxh6+ Qg7 37.Qxe6 Re7 38.Qxf5+ Rf7 39.Qe6 Rf1+ 40.Bxf1 Qxg4+ 41.Qxg4 Ke7 42.Rh7+ Bf7 43.Qg5+ Ke6 44.Qf6+
 29/25	00:18	 64 539k	3 465k	+M12	32. ... c4 33.fxg7 f5 34.gxf8Q+ Kxf8 35.Qxh6+ Qg7 36.Rd8+ Kf7 37.exf5 Qxh6 38.Rxh6 Be8 39.Rh7+ Kf8 40.Rxa7 Nd7 41.Raxd7 exf5 42.gxf5 a4 43.Bb4+ Kg8 44.Rxe8+
okay … so with best play … it looks like a mate in 12 …
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Critter does not see Mate in 9 ...

Post by Vinvin »

pilgrimdan wrote: ↑Sat Mar 09, 2019 9:05 pm
Vinvin wrote: ↑Sat Mar 09, 2019 10:50 am 32...Re8 is a mistake.

After 31. Rh3 c3 32. Bxc3 , SF-Matefinder with 5 best moves finds mate in 12 with Qb7 or c4 :

Code: Select all

 FEN: 1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/4P1P1/P1B4R/3Q2BP/6K1 b - - 0 32

Matefinder_20190305:
 28/23	00:18	 64 539k	3 465k	+M9	32. ... Qxd6 33.exd6 e5 34.fxg7 f6 35.gxf8Q+ Kxf8 36.Qxh6+ Kf7 37.Bxe5 Bd5 38.exd5 Nd7 39.Qh7+ Kf8 40.Qg6 fxe5 41.Rh8+
 28/19	00:18	 64 539k	3 465k	+M9	32. ... Rb7 33.Rxh6 Rb1+ 34.Bf1 Qa7 35.Qg5 Rxf1+ 36.Kxf1 Qa6+ 37.Kf2 Qf1+ 38.Kxf1 g6 39.Rh8+ Kxh8 40.Qh6+ Kg8 41.Qg7+
 29/23	00:18	 64 539k	3 465k	+M9	32. ... Qb6 33.fxg7 c4+ 34.Bd4 f6 35.gxf8Q+ Kxf8 36.Qxh6+ Rg7 37.Bxb6 Nd7 38.exf6 Nxf6 39.Qxf6+ Kg8 40.Rd8+ Be8 41.Rxe8+
 29/25	00:18	 64 539k	3 465k	+M12	32. ... Qb7 33.fxg7 f5 34.gxf8R+ Kxf8 35.Rd8+ Be8 36.Qxh6+ Qg7 37.Qxe6 Re7 38.Qxf5+ Rf7 39.Qe6 Rf1+ 40.Bxf1 Qxg4+ 41.Qxg4 Ke7 42.Rh7+ Bf7 43.Qg5+ Ke6 44.Qf6+
 29/25	00:18	 64 539k	3 465k	+M12	32. ... c4 33.fxg7 f5 34.gxf8Q+ Kxf8 35.Qxh6+ Qg7 36.Rd8+ Kf7 37.exf5 Qxh6 38.Rxh6 Be8 39.Rh7+ Kf8 40.Rxa7 Nd7 41.Raxd7 exf5 42.gxf5 a4 43.Bb4+ Kg8 44.Rxe8+
okay … so with best play … it looks like a mate in 12 …
Mate in 14 from starting position :

Code: Select all

FEN: 1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/2p1P1P1/P2R4/1B1Q2BP/6K1 w - - 0 31

Matefinder_190203:
 31/28	00:04	 7 945 343	1 835 800	+M14	31.Rh3 c3 32.Bxc3 Qb7 33.fxg7 f6 34.gxf8R+ Kxf8 35.Rd8+ Be8 36.exf6 Qh7 37.Rxh6 Qg8 38.Qd6+ Kf7 39.Qxc5 Qxg4 40.Qxa7+ Nd7 41.Rxd7+ Bxd7 42.Qxd7+ Kf8 43.Rh8+ Qg8 44.Qe7+
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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

Re: Critter does not see Mate in 9 ...

Post by pilgrimdan »

Vinvin wrote: ↑Sat Mar 09, 2019 10:56 pm
pilgrimdan wrote: ↑Sat Mar 09, 2019 9:05 pm
Vinvin wrote: ↑Sat Mar 09, 2019 10:50 am 32...Re8 is a mistake.

After 31. Rh3 c3 32. Bxc3 , SF-Matefinder with 5 best moves finds mate in 12 with Qb7 or c4 :

Code: Select all

 FEN: 1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/4P1P1/P1B4R/3Q2BP/6K1 b - - 0 32

Matefinder_20190305:
 28/23	00:18	 64 539k	3 465k	+M9	32. ... Qxd6 33.exd6 e5 34.fxg7 f6 35.gxf8Q+ Kxf8 36.Qxh6+ Kf7 37.Bxe5 Bd5 38.exd5 Nd7 39.Qh7+ Kf8 40.Qg6 fxe5 41.Rh8+
 28/19	00:18	 64 539k	3 465k	+M9	32. ... Rb7 33.Rxh6 Rb1+ 34.Bf1 Qa7 35.Qg5 Rxf1+ 36.Kxf1 Qa6+ 37.Kf2 Qf1+ 38.Kxf1 g6 39.Rh8+ Kxh8 40.Qh6+ Kg8 41.Qg7+
 29/23	00:18	 64 539k	3 465k	+M9	32. ... Qb6 33.fxg7 c4+ 34.Bd4 f6 35.gxf8Q+ Kxf8 36.Qxh6+ Rg7 37.Bxb6 Nd7 38.exf6 Nxf6 39.Qxf6+ Kg8 40.Rd8+ Be8 41.Rxe8+
 29/25	00:18	 64 539k	3 465k	+M12	32. ... Qb7 33.fxg7 f5 34.gxf8R+ Kxf8 35.Rd8+ Be8 36.Qxh6+ Qg7 37.Qxe6 Re7 38.Qxf5+ Rf7 39.Qe6 Rf1+ 40.Bxf1 Qxg4+ 41.Qxg4 Ke7 42.Rh7+ Bf7 43.Qg5+ Ke6 44.Qf6+
 29/25	00:18	 64 539k	3 465k	+M12	32. ... c4 33.fxg7 f5 34.gxf8Q+ Kxf8 35.Qxh6+ Qg7 36.Rd8+ Kf7 37.exf5 Qxh6 38.Rxh6 Be8 39.Rh7+ Kf8 40.Rxa7 Nd7 41.Raxd7 exf5 42.gxf5 a4 43.Bb4+ Kg8 44.Rxe8+
okay … so with best play … it looks like a mate in 12 …
Mate in 14 from starting position :

Code: Select all

FEN: 1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/2p1P1P1/P2R4/1B1Q2BP/6K1 w - - 0 31

Matefinder_190203:
 31/28	00:04	 7 945 343	1 835 800	+M14	31.Rh3 c3 32.Bxc3 Qb7 33.fxg7 f6 34.gxf8R+ Kxf8 35.Rd8+ Be8 36.exf6 Qh7 37.Rxh6 Qg8 38.Qd6+ Kf7 39.Qxc5 Qxg4 40.Qxa7+ Nd7 41.Rxd7+ Bxd7 42.Qxd7+ Kf8 43.Rh8+ Qg8 44.Qe7+
okay ... thanks ... appreciate that ...
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Critter does not see Mate in 9 ...

Post by zullil »

Vinvin wrote: ↑Sat Mar 09, 2019 10:56 pm
Mate in 14 from starting position :

Code: Select all

FEN: 1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/2p1P1P1/P2R4/1B1Q2BP/6K1 w - - 0 31

Matefinder_190203:
 31/28	00:04	 7 945 343	1 835 800	+M14	31.Rh3 c3 32.Bxc3 Qb7 33.fxg7 f6 34.gxf8R+ Kxf8 35.Rd8+ Be8 36.exf6 Qh7 37.Rxh6 Qg8 38.Qd6+ Kf7 39.Qxc5 Qxg4 40.Qxa7+ Nd7 41.Rxd7+ Bxd7 42.Qxd7+ Kf8 43.Rh8+ Qg8 44.Qe7+
Cfish and Critter (see above) say mate-in-13.

Mate in 13 31. Rh3 c3 32. Bxc3 c4 33. Rxh6 Qb6+ 34. Rd4 Qb1+ 35. Bf1 Bxe4 36. fxg7 Qxf1+ 37. Kxf1 Kxg7 38. Qg5+ Bg6 39. Qf6+ Kxh6 40. g5+ Kh7 41. Rh4+ Bh5 42. Rxh5+ Kg8 43. Rh8# (depth 47, 0:00:46)
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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

after 1 hr Critter sees Mate on 31. ...c4

Post by pilgrimdan »

zullil wrote: ↑Sat Mar 09, 2019 11:09 pm
Vinvin wrote: ↑Sat Mar 09, 2019 10:56 pm
Mate in 14 from starting position :

Code: Select all

FEN: 1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/2p1P1P1/P2R4/1B1Q2BP/6K1 w - - 0 31

Matefinder_190203:
 31/28	00:04	 7 945 343	1 835 800	+M14	31.Rh3 c3 32.Bxc3 Qb7 33.fxg7 f6 34.gxf8R+ Kxf8 35.Rd8+ Be8 36.exf6 Qh7 37.Rxh6 Qg8 38.Qd6+ Kf7 39.Qxc5 Qxg4 40.Qxa7+ Nd7 41.Rxd7+ Bxd7 42.Qxd7+ Kf8 43.Rh8+ Qg8 44.Qe7+
Cfish and Critter (see above) say mate-in-13.

Mate in 13 31. Rh3 c3 32. Bxc3 c4 33. Rxh6 Qb6+ 34. Rd4 Qb1+ 35. Bf1 Bxe4 36. fxg7 Qxf1+ 37. Kxf1 Kxg7 38. Qg5+ Bg6 39. Qf6+ Kxh6 40. g5+ Kh7 41. Rh4+ Bh5 42. Rxh5+ Kg8 43. Rh8# (depth 47, 0:00:46)
21/57 1:29:50 5,605,450k 1,040k -M12 c5-c4 f6xg7 f7-f6 g7xf8Q+ Kg8xf8 Rh3xh6 Qc7-h7 e5xf6 Qh7-g8 Rd6-d8+ Bc6-e8 Qd2-d6+ Kf8-f7 Qd6-c5 Qg8xg4 Qc5xa7+ Nb8-d7 Rd8xd7+ Be8xd7 Qa7xd7+ Kf7-f8 Rh6-h8+ Qg4-g8

22/57 1:31:03 5,719,459k 1,047k -M11 c5-c4 Rh3xh6 Qc7-b6+ Rd6-d4 Qb6-b1+ Bg2-f1 Bc6xe4 f6xg7 Qb1xf1+ Kg1xf1 Kg8xg7 Qd2-g5+ Be4-g6 Qg5-f6+ Kg7xh6 g4-g5+ Kh6-h7 Rd4-h4+ Bg6-h5 Rh4xh5+ Kh7-g8
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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

that should be 32. ...c4

Post by pilgrimdan »

pilgrimdan wrote: ↑Sun Mar 10, 2019 1:01 am
zullil wrote: ↑Sat Mar 09, 2019 11:09 pm
Vinvin wrote: ↑Sat Mar 09, 2019 10:56 pm
Mate in 14 from starting position :

Code: Select all

FEN: 1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/2p1P1P1/P2R4/1B1Q2BP/6K1 w - - 0 31

Matefinder_190203:
 31/28	00:04	 7 945 343	1 835 800	+M14	31.Rh3 c3 32.Bxc3 Qb7 33.fxg7 f6 34.gxf8R+ Kxf8 35.Rd8+ Be8 36.exf6 Qh7 37.Rxh6 Qg8 38.Qd6+ Kf7 39.Qxc5 Qxg4 40.Qxa7+ Nd7 41.Rxd7+ Bxd7 42.Qxd7+ Kf8 43.Rh8+ Qg8 44.Qe7+
Cfish and Critter (see above) say mate-in-13.

Mate in 13 31. Rh3 c3 32. Bxc3 c4 33. Rxh6 Qb6+ 34. Rd4 Qb1+ 35. Bf1 Bxe4 36. fxg7 Qxf1+ 37. Kxf1 Kxg7 38. Qg5+ Bg6 39. Qf6+ Kxh6 40. g5+ Kh7 41. Rh4+ Bh5 42. Rxh5+ Kg8 43. Rh8# (depth 47, 0:00:46)
21/57 1:29:50 5,605,450k 1,040k -M12 c5-c4 f6xg7 f7-f6 g7xf8Q+ Kg8xf8 Rh3xh6 Qc7-h7 e5xf6 Qh7-g8 Rd6-d8+ Bc6-e8 Qd2-d6+ Kf8-f7 Qd6-c5 Qg8xg4 Qc5xa7+ Nb8-d7 Rd8xd7+ Be8xd7 Qa7xd7+ Kf7-f8 Rh6-h8+ Qg4-g8

22/57 1:31:03 5,719,459k 1,047k -M11 c5-c4 Rh3xh6 Qc7-b6+ Rd6-d4 Qb6-b1+ Bg2-f1 Bc6xe4 f6xg7 Qb1xf1+ Kg1xf1 Kg8xg7 Qd2-g5+ Be4-g6 Qg5-f6+ Kg7xh6 g4-g5+ Kh6-h7 Rd4-h4+ Bg6-h5 Rh4xh5+ Kh7-g8
[d]1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/4P1P1/P1B4R/3Q2BP/6K1 b - - 0 32

32. ...c4
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: that should be 32. ...c4

Post by zullil »

pilgrimdan wrote: ↑Sun Mar 10, 2019 4:10 am
22/57 1:31:03 5,719,459k 1,047k -M11 c5-c4 Rh3xh6 Qc7-b6+ Rd6-d4 Qb6-b1+ Bg2-f1 Bc6xe4 f6xg7 Qb1xf1+ Kg1xf1 Kg8xg7 Qd2-g5+ Be4-g6 Qg5-f6+ Kg7xh6 g4-g5+ Kh6-h7 Rd4-h4+ Bg6-h5 Rh4xh5+ Kh7-g8

[d]1n3rk1/r1q2pp1/2bRpP1p/p1p1P3/4P1P1/P1B4R/3Q2BP/6K1 b - - 0 32

32. ...c4
I'm having difficulty understanding your posts. I already demonstrated that Critter finds mate-in-13 from your original position, and does so in just minutes.
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