What your engine thinks of this position ?
[d] 5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 w - - 0 1
Will black mate here ?
Moderators: hgm, Rebel, chrisw
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xr_a_y
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peter
- Posts: 3185
- Joined: Sat Feb 16, 2008 7:38 am
- Full name: Peter Martan
Re: Will black mate here ?
I don't think so, neither does Cfish.
After some Forward- Backward to the soon to be reached 7men positions, which all were drawn, that I saw so far:
5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 w - - 0 1
Analysis by Cfish 280920 64 POPCNT NUMA:
1.d5 Kf7 2.b3 Ng2 3.c4 Nf4 4.b4 Nd3 5.a3 Nf4 6.b5 Nd3 7.a4 Nc5 8.d6 cxd6 9.a5 a6 10.bxa6 Nxa6 11.Kh7 Nc5 12.Kh8 Kf8 13.Kh7 Kf7
= (0.00) Depth: 80/31 00:05:41 4170MN, tb=83658120
Of the 8 possible moves White has, 6 are losing, the two other ones seem equal:
5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 w - - 0 1
Analysis by Cfish 280920 64 POPCNT NUMA:
1. = (0.00): 1.d5 Nd3 2.b3 Nc5 3.Kh7 Kf7 4.c4 Nd3 5.Kh8 a6 6.a3 a5 7.Kh7 Nf4 8.Kh8 Nxh5 9.b4 axb4 10.axb4 Nf4 11.d6 Ng6+ 12.Kh7 Nf8+ 13.Kh8 cxd6 14.b5 Nd7 15.b6 Ne5 16.Kh7 Nd7
2. = (0.00): 1.c4 Kf7 2.d5 Nd3 3.b3 a6 4.a3 a5 5.Kh7 Nf4 6.Kh8 Nxh5 7.b4 axb4 8.axb4 Nf4 9.d6 Ng6+ 10.Kh7 Nf8+ 11.Kh8
3. -+ (-88.15): 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng5+ 5.Kh8 Ne4 6.c4 Nd6 7.Kh7 Nf5 8.d5 c5 9.Kh8 Nd6 10.Kh7 Ne4 11.Kh8 Nf6 12.d6 a5 13.a4 Kf8 14.b4 cxb4 15.c5 Nd7 16.c6 Ne5 17.c7 Nf7+ 18.Kh7 Nxd6 19.Kg6 Kg8 20.Kg5 Nc8 21.Kf5 b3 22.Ke4 b2 23.Ke3 b1Q 24.Kf2 Qb6+ 25.Kf3 Qc6+ 26.Ke2 Qe4+ 27.Kf2 Qd4+ 28.Ke2 Qe5+ 29.Kd3 Qd5+ 30.Kc3 Qc6+ 31.Kd2 Qd7+ 32.Ke1 Qe7+ 33.Kd2
6men Syzygys loaded.
After some Forward- Backward to the soon to be reached 7men positions, which all were drawn, that I saw so far:
5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 w - - 0 1
Analysis by Cfish 280920 64 POPCNT NUMA:
1.d5 Kf7 2.b3 Ng2 3.c4 Nf4 4.b4 Nd3 5.a3 Nf4 6.b5 Nd3 7.a4 Nc5 8.d6 cxd6 9.a5 a6 10.bxa6 Nxa6 11.Kh7 Nc5 12.Kh8 Kf8 13.Kh7 Kf7
= (0.00) Depth: 80/31 00:05:41 4170MN, tb=83658120
Of the 8 possible moves White has, 6 are losing, the two other ones seem equal:
5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 w - - 0 1
Analysis by Cfish 280920 64 POPCNT NUMA:
1. = (0.00): 1.d5 Nd3 2.b3 Nc5 3.Kh7 Kf7 4.c4 Nd3 5.Kh8 a6 6.a3 a5 7.Kh7 Nf4 8.Kh8 Nxh5 9.b4 axb4 10.axb4 Nf4 11.d6 Ng6+ 12.Kh7 Nf8+ 13.Kh8 cxd6 14.b5 Nd7 15.b6 Ne5 16.Kh7 Nd7
2. = (0.00): 1.c4 Kf7 2.d5 Nd3 3.b3 a6 4.a3 a5 5.Kh7 Nf4 6.Kh8 Nxh5 7.b4 axb4 8.axb4 Nf4 9.d6 Ng6+ 10.Kh7 Nf8+ 11.Kh8
3. -+ (-88.15): 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng5+ 5.Kh8 Ne4 6.c4 Nd6 7.Kh7 Nf5 8.d5 c5 9.Kh8 Nd6 10.Kh7 Ne4 11.Kh8 Nf6 12.d6 a5 13.a4 Kf8 14.b4 cxb4 15.c5 Nd7 16.c6 Ne5 17.c7 Nf7+ 18.Kh7 Nxd6 19.Kg6 Kg8 20.Kg5 Nc8 21.Kf5 b3 22.Ke4 b2 23.Ke3 b1Q 24.Kf2 Qb6+ 25.Kf3 Qc6+ 26.Ke2 Qe4+ 27.Kf2 Qd4+ 28.Ke2 Qe5+ 29.Kd3 Qd5+ 30.Kc3 Qc6+ 31.Kd2 Qd7+ 32.Ke1 Qe7+ 33.Kd2
6men Syzygys loaded.
Peter.
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yurikvelo
- Posts: 710
- Joined: Sat Dec 06, 2014 1:53 pm
Re: Will black mate here ?
LC0 with 320x24-dev network also plays draw
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MOBMAT
- Posts: 385
- Joined: Sat Feb 04, 2017 11:57 pm
- Location: USA
Re: Will black mate here ?
Houdini 6 with 6 man Nalimov concurs
Code: Select all
FEN: 5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 w - - 0 1
Houdini 6 (N6):
37 00:01 12,242,888 9,374,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
37 00:01 12,242,888 9,374,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
37 00:01 12,242,888 9,374,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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38 00:01 15,355,173 9,426,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
38 00:01 15,355,173 9,426,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
38 00:01 15,355,173 9,426,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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39 00:02 23,363,417 9,451,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
39 00:02 23,363,417 9,451,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
39 00:02 23,363,417 9,451,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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40 00:05 57,545,613 9,679,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
40 00:05 57,545,613 9,679,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
40 00:05 57,545,613 9,679,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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41 00:08 77,599,771 9,073,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
41 00:08 77,599,771 9,073,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
41 00:08 77,599,771 9,073,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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42 00:13 115,388,294 8,703,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
42 00:13 115,388,294 8,703,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
42 00:13 115,388,294 8,703,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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43 00:20 178,455,422 8,512,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
43 00:20 178,455,422 8,512,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
43 00:20 178,455,422 8,512,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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44 00:41 305,125,856 7,432,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
44 00:41 305,125,856 7,432,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
44 00:41 305,125,856 7,432,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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45 00:52 373,919,494 7,112,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
45 00:52 373,919,494 7,112,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
45 00:52 373,919,494 7,112,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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46 01:24 595,039,213 7,011,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
46 01:24 595,039,213 7,011,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
46 01:24 595,039,213 7,011,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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47 01:57 819,992,286 6,953,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
47 01:57 819,992,286 6,953,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
47 01:57 819,992,286 6,953,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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48 02:37 1,115,591,515 7,100,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
48 02:37 1,115,591,515 7,100,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
48 02:37 1,115,591,515 7,100,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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49 03:11 1,354,734,161 7,076,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
49 03:11 1,354,734,161 7,076,000 0.00 1.b3 Nd3 2.d5 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
49 03:11 1,354,734,161 7,076,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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50 09:24 4,403,172,036 7,806,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+
50 09:24 4,403,172,036 7,806,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
50 09:24 4,403,172,036 7,806,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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51 09:46 4,553,240,473 7,759,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+
51 09:46 4,553,240,473 7,759,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
51 09:46 4,553,240,473 7,759,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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52 10:15 4,724,456,397 7,680,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+
52 10:15 4,724,456,397 7,680,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
52 10:15 4,724,456,397 7,680,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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53 12:54 5,528,842,260 7,137,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4
53 12:54 5,528,842,260 7,137,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
53 12:54 5,528,842,260 7,137,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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54 14:34 6,128,262,188 7,010,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4 Qxc7
54 14:34 6,128,262,188 7,010,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
54 14:34 6,128,262,188 7,010,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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55 15:19 6,485,140,630 7,050,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4 Qxc7 28.Ke4
55 15:19 6,485,140,630 7,050,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
55 15:19 6,485,140,630 7,050,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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56 17:25 7,244,856,864 6,932,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4 Qxc7 28.Ke4 Kxh5
56 17:25 7,244,856,864 6,932,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
56 17:25 7,244,856,864 6,932,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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57 18:34 7,633,828,720 6,849,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4 Qxc7 28.Ke4 Kxh5
57 18:34 7,633,828,720 6,849,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
57 18:34 7,633,828,720 6,849,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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58 21:35 8,882,448,556 6,854,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4 Qxc7 28.Ke4 Kxh5
58 21:35 8,882,448,556 6,854,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
58 21:35 8,882,448,556 6,854,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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59 24:55 9,973,241,496 6,668,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4 Qxc7 28.Ke4 Kxh5
59 24:55 9,973,241,496 6,668,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
59 24:55 9,973,241,496 6,668,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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60 31:40 12,102,768,753 6,367,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4 Qxc7 28.Ke4 Kxh5
60 31:40 12,102,768,753 6,367,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
60 31:40 12,102,768,753 6,367,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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61 34:28 13,132,006,561 6,349,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4 Qxc7 28.Ke4 Kxh5
61 34:28 13,132,006,561 6,349,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
61 34:28 13,132,006,561 6,349,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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62 48:35 17,712,931,986 6,075,000 -M34 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a4 Kf8 12.b4 cxb4 13.c5 Nd7 14.c6 Ne5 15.c7 Nf7+ 16.Kh7 Nxd6 17.Kg6 Kg8 18.h7+ Kh8 19.Kf6 b3 20.Ke5 Nc8 21.Ke6 b2 22.Kd7 Nb6+ 23.Ke6 b1Q 24.Ke5 Kxh7 25.Kf4 Kh6 26.Ke3 Qc1+ 27.Kd4 Qxc7 28.Ke4 Kxh5
62 48:35 17,712,931,986 6,075,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
62 48:35 17,712,931,986 6,075,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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63 1:40:30 35,080,981,390 5,817,000 -M33 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng1 5.c4 Nf3 6.d5 c5 7.d6 Ne5 8.Kh8 a5 9.Kh7 Nd7 10.Kh8 Nf6 11.a3 Kf8 12.b4 axb4 13.axb4 cxb4 14.c5 b3 15.c6 Ne4 16.d7 Ke7 17.Kg7 Ng5 18.h7 Nxh7 19.Kxh7
63 1:40:30 35,080,981,390 5,817,000 0.00 1.d5 Nd3 2.b3 Nf4 3.c4 Kf7 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
63 1:40:30 35,080,981,390 5,817,000 0.00 1.c4 Nd3 2.b3 Kf7 3.d5 Nf4 4.b4 Nxh5 5.c5 Nf4 6.d6 Ng6+ 7.Kh7 Nf8+ 8.Kh8 Ng6+
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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MTaktikos
- Posts: 59
- Joined: Fri Oct 25, 2019 7:58 pm
- Full name: Michael Taktikos
Re: Will black mate here ?
For engine Crystal this position (in which White has to move) is a draw.
But if Black has to move, what makes sense in the given question, then yes, for Crystal it looks like a mate in 30
It starts by hunting White's pawns with 1... Nd3 and they cannot escape, example
2.b4 Nc1 3.Kh7 Kf7 4.a3 Ne2 5.c4 Nxd4 6.b5 Nb3 7.Kh8 Nc5 8.Kh7 Ne4 9.a4 Nc3 10.c5 Nxa4 11.Kh8 Nxc5 12.b6 axb6 13.h7 Ne4 14.h6 Kg6 15.Kg8 Nf6+ 16.Kf8 Nxh7+ 17.Ke7 c5 18.Kd6 c4 19.Kc6 c3 20.Kb5 c2 21.Ka4 c1Q
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xr_a_y
- Posts: 1871
- Joined: Sat Nov 25, 2017 2:28 pm
- Location: France
Re: Will black mate here ?
Indeed, I was thinking black to move. Sorry for the mistake.
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syzygy
- Posts: 5557
- Joined: Tue Feb 28, 2012 11:56 pm
Re: Will black mate here ?
[d]5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 b - - 0 1
Code: Select all
info depth 52 seldepth 50 multipv 1 score mate 33 nodes 76355286 nps 396533 hashfull 97 tbhits 428203 time 192557 pv e1d3 b2b4 d3b2 h8h7 f8f7 h7h8 b2c4 d4d5 c4e3 a2a3 e3c4 a3a4 c4b6 c3c4 b6c4 b4b5 c4d6 h8h7 d6e4 h7h8 e4c3 d5d6 c7d6 a4a5 c3b5 h6h7 b5d4 a5a6 d4f5 h5h6 f7g6 h8g8 f5h6 g8f8 g6h7 f8e7 d6d5 e7d6 d5d4 d6c6 d4d3 c6b7 d3d2 b7a7 d2d1q a7b7 h6f5 a6a7 d1d5 b7b6 f5e3 a7a8q d5a8 b6b5 a8d5 b5b4 d5c4 b4a5 e3f5 a5b6 f5d6 b6a7 c4b5 a7a8 b5b7-
syzygy
- Posts: 5557
- Joined: Tue Feb 28, 2012 11:56 pm
Re: Will black mate here ?
Mate in 28:
[pgn][Result "0-1"]
[FEN "5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 b - - 0 1"]
1... Nd3 2. b4 Nc1 3. a3 Ne2 4. c4 Nxd4 5. Kh7 Kf7 6. b5 Nb3 7. Kh8 Nc5 8.
Kh7 Nb7 9. a4 Nc5 10. Kh8 Nxa4 11. c5 Nxc5 12. h7 Nd7 13. b6 axb6 14. h6
Kg6 15. Kg8 Nf6+ 16. Kf8 Nxh7+ 17. Ke7 b5 18. Ke8 b4 19. Kd7 b3 20. Kc6 b2
21. Kb5 b1=Q+ 22. Kc4 Nf6 23. h7 Qc2+ 24. Kb5 Kxh7 25. Kb4 c6 26. Ka3 Ne4
27. Kb4 Qc3+ 28. Ka4 Nc5#[/pgn]
[pgn][Result "0-1"]
[FEN "5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 b - - 0 1"]
1... Nd3 2. b4 Nc1 3. a3 Ne2 4. c4 Nxd4 5. Kh7 Kf7 6. b5 Nb3 7. Kh8 Nc5 8.
Kh7 Nb7 9. a4 Nc5 10. Kh8 Nxa4 11. c5 Nxc5 12. h7 Nd7 13. b6 axb6 14. h6
Kg6 15. Kg8 Nf6+ 16. Kf8 Nxh7+ 17. Ke7 b5 18. Ke8 b4 19. Kd7 b3 20. Kc6 b2
21. Kb5 b1=Q+ 22. Kc4 Nf6 23. h7 Qc2+ 24. Kb5 Kxh7 25. Kb4 c6 26. Ka3 Ne4
27. Kb4 Qc3+ 28. Ka4 Nc5#[/pgn]
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peter
- Posts: 3185
- Joined: Sat Feb 16, 2008 7:38 am
- Full name: Peter Martan
Re: Will black mate here ?
I see, but that makes things just easier, doesn't it?
Black then would have to fail heavily, not mating sooner or later.
5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 b - - 0 1
Analysis by CF 041020 x64 SSE41 N:
1. -+ (-#22): 1...Nd3 2.b4 c6 3.Kh7 Kf7 4.Kh8 Nb2 5.Kh7 Nc4 6.Kh8 Na3 7.Kh7 Nb5 8.c4 Nxd4 9.a4 Nb3 10.Kh8 c5 11.bxc5 Nxc5 12.a5 Nb7 13.a6 Nc5 14.Kh7 Nxa6 15.Kh8 Nc5 16.Kh7 a5 17.Kh8 a4 18.Kh7 Nd7 19.Kh8 a3 20.c5 a2 21.Kh7 a1Q 22.c6 Nf8#
2. -+ (-152.65): 1...c6 2.b3 Nf3 3.Kh7 Kf7 4.Kh8 Nh4 5.c4 Nf5 6.d5 c5 7.Kh7 Nd6 8.Kh8 Ne4 9.Kh7 Nf6+ 10.Kh8 a5 11.a3 Kf8 12.d6 Kf7 13.a4 Kf8 14.b4 cxb4 15.c5 Nd7 16.c6 Ne5 17.c7 Nf7+ 18.Kh7 Nxd6 19.Kg6 Kg8 20.h7+ Kh8 21.Kf6 b3 22.Ke6 Nc8 23.Kd7 Na7 24.Kd6 b2 25.Kc5 b1Q 26.Kd4 Nc8 27.Kc3 Qxh7 28.Kd4 Qxc7 29.Ke3 Kh7 30.Kd2 Nd6 31.Kd3 Qc4+ 32.Kd2 Ne4+ 33.Ke3 Qc1+ 34.Kd3
3. -+ (-152.65): 1...Nc2 2.b3 Ne3 3.c4 c6 4.Kh7 Kf7 5.Kh8 Nf5 6.d5 c5 7.Kh7 Nd6 8.Kh8 Ne4 9.Kh7 Nf6+ 10.Kh8 a5 11.a3 Kf8 12.d6 Kf7 13.a4 Kf8 14.b4 cxb4 15.c5 Nd7 16.c6 Ne5 17.c7 Nf7+ 18.Kh7 Nxd6 19.Kg6 Kg8 20.h7+ Kh8 21.Kf6 b3 22.Ke6 Nc8 23.Kd7 Na7 24.Kd6 b2 25.Kc5 b1Q 26.Kd4 Kxh7 27.Kc3 Nc8 28.Kd2 Qb4+ 29.Ke2 Qxa4 30.Ke3 Qc2 31.Kd4 Qxc7 32.Kd3 Qc1 33.Ke2
4. -+ (-152.65): 1...Ng2 2.b3 c6 3.c4 Ne3 4.Kh7 Kf7 5.Kh8 Nf5 6.d5 c5 7.Kh7 Nd6 8.Kh8 Ne4 9.Kh7 Nf6+ 10.Kh8 a5 11.a3 Kf8 12.d6 Kf7 13.a4 Kf8 14.b4 cxb4 15.c5 Nd7 16.c6 Ne5 17.c7 Nf7+ 18.Kh7 Nxd6 19.Kg6 Kg8 20.h7+ Kh8 21.Kf6 b3 22.Ke6 Nc8 23.Kd7 Na7 24.Kd6 b2 25.Kc5 b1Q 26.Kd4 Kxh7 27.Kc3 Nc8 28.Kd2 Qb4+ 29.Ke2 Qxa4 30.Ke3 Qc2 31.Kd4 Qxc7 32.Kd3 Qc1 33.Ke2 Qc2+ 34.Kf3
Depth 61.
With White to move, there were only two game changers yet:
5k1K/p1p5/7P/7P/3P4/2P5/PP6/4n3 w - - 0 1
1. = (0.00): 1.d5 Nd3 2.b3 Nc5 3.Kh7 Kf7 4.c4 Nd3 5.Kh8 a6 6.a3 a5 7.Kh7 Nf4 8.Kh8 Nxh5 9.b4 axb4 10.axb4 Nf4 11.d6 Ng6+ 12.Kh7 Nf8+ 13.Kh8 cxd6 14.b5 Nd7 15.b6 Ne5 16.Kh7 Nd7
2. = (0.00): 1.c4 Kf7 2.d5 Nd3 3.b3 a6 4.a3 a5 5.Kh7 Nf4 6.Kh8 Nxh5 7.b4 axb4 8.axb4 Nf4 9.d6 Ng6+ 10.Kh7 Nf8+ 11.Kh8
3. -+ (-88.15): 1.b3 c6 2.Kh7 Kf7 3.Kh8 Nf3 4.Kh7 Ng5+ 5.Kh8 Ne4 6.c4 Nd6 7.Kh7 Nf5 8.d5 c5 9.Kh8 Nd6 10.Kh7 Ne4 11.Kh8 Nf6 12.d6 a5 13.a4 Kf8 14.b4 cxb4 15.c5 Nd7 16.c6 Ne5 17.c7 Nf7+ 18.Kh7 Nxd6 19.Kg6 Kg8 20.Kg5 Nc8 21.Kf5 b3 22.Ke4 b2 23.Ke3 b1Q 24.Kf2 Qb6+ 25.Kf3 Qc6+ 26.Ke2 Qe4+ 27.Kf2 Qd4+ 28.Ke2 Qe5+ 29.Kd3 Qd5+ 30.Kc3 Qc6+ 31.Kd2 Qd7+ 32.Ke1 Qe7+ 33.Kd2
So I like the position with White to move still more regards
Peter.
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syzygy
- Posts: 5557
- Joined: Tue Feb 28, 2012 11:56 pm
Re: Will black mate here ?
Oh that's annoying, I only got to mate in 25 so farpeter wrote: ↑Sun Oct 04, 2020 2:41 pm Analysis by CF 041020 x64 SSE41 N:
1. -+ (-#22): 1...Nd3 2.b4 c6 3.Kh7 Kf7 4.Kh8 Nb2 5.Kh7 Nc4 6.Kh8 Na3 7.Kh7 Nb5 8.c4 Nxd4 9.a4 Nb3 10.Kh8 c5 11.bxc5 Nxc5 12.a5 Nb7 13.a6 Nc5 14.Kh7 Nxa6 15.Kh8 Nc5 16.Kh7 a5 17.Kh8 a4 18.Kh7 Nd7 19.Kh8 a3 20.c5 a2 21.Kh7 a1Q 22.c6 Nf8#
Update: mate in 23