4r1k1/5p1p/1qNp2p1/p2P4/Pp3P2/1B2r3/6PP/1R1Q3K b - - 0 36
ok this is a position from one of my games. Black hos a nominal material disadvantage.
As I see it, black has an easy forced win starting with 36...Qc5. Given that in some lines checkmate is not achieved for another dozen or so moves, under what conditions might a decent chess engine misevaluate this position?
regards.
Move horizon example?
Moderator: Ras
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Re: Move horizon example?
Gaviota analysis: 43 seconds to find Qc5 with a positive score. A decent engine may do betterFguy64 wrote:4r1k1/5p1p/1qNp2p1/p2P4/Pp3P2/1B2r3/6PP/1R1Q3K b - - 0 36
ok this is a position from one of my games. Black hos a nominal material disadvantage.
As I see it, black has an easy forced win starting with 36...Qc5. Given that in some lines checkmate is not achieved for another dozen or so moves, under what conditions might a decent chess engine misevaluate this position?
regards.

I think it is an interesting position to evaluate king safety.
Code: Select all
9332 4: 0.1 -0.54 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Re8+
Kg7 22.Bc4 Qxf4 23.Nxa5
32547 5 0.2 -0.37 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rd1
Qxf4 22.Re1 Qd2 23.Re7
41529 5: 0.3 -0.37 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rd1
Qxf4 22.Re1 Qd2 23.Re7
74995 6 0.5 -0.23 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rd1
Qxf4 22.Nxa5 Qe3 23.Bc4 Qe4
88995 6: 0.6 -0.23 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rd1
Qxf4 22.Nxa5 Qe3 23.Bc4 Qe4
177040 7 1.1 -0.51 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rb1
Qe3 22.Bc2 Qxf4 23.Nxa5
243533 7: 1.4 -0.51 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rb1
Qe3 22.Bc2 Qxf4 23.Nxa5
454891 8 1.9 -0.37 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rb1
Qxf4 22.Nxa5 Qe4 23.Rd1 Qe3 24.Bc4 Qa7
25.Nc6 Qxa4
586316 8: 2.2 -0.37 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rb1
Qxf4 22.Nxa5 Qe4 23.Rd1 Qe3 24.Bc4 Qa7
25.Nc6 Qxa4
1701263 9 5.0 -0.62 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rd1
Qe3 22.Nxa5 Qxf4 23.Nc6 f5
3712761 9 11.2 -0.18 Rc3 19.Nd4 Ree3 20.Bc2 Rc4 21.Ne2 Qb7
22.Bd3 Rc5
4087795 9: 12.3 -0.18 Rc3 19.Nd4 Ree3 20.Bc2 Rc4 21.Ne2 Qb7
22.Bd3 Rc5
5610733 10 16.8 -0.41 Rc3 19.Nd4 Ree3 20.Bc2 Qc5 21.Nb3 Qc8
22.Qd4 Qc4 23.Kg1 Qxd4 24.Nxd4
8138038 10 23.1 -0.39 Re1+ 19.Qxe1 Rxe1+ 20.Rxe1 Qf2 21.Rb1
Qxf4 22.Nxa5 Qd2 23.h3 Qd3 24.Re1 f5
25.Re7 h6
11643555 10 33.4 -0.21 R3e4 19.Qg1 Qxg1+ 20.Kxg1 Rxf4 21.Nxa5
Re2 22.Nc4 Rff2 23.g3 f5 24.Nxd6 Rxh2
14949762 10 43.1 :-) Qc5
16360638 10 47.0 +0.72 Qc5 19.Qg1 R8e4 20.Nb8 Rc3 21.g3 Qxg1+
22.Kxg1 Ree3 23.Bd1 Re8
16801110 10: 48.2 +0.72 Qc5 19.Qg1 R8e4 20.Nb8 Rc3 21.g3 Qxg1+
22.Kxg1 Ree3 23.Bd1 Re8
19811960 11 56.5 :-) Qc5
22141524 11 63.2 +1.13 Qc5 19.h3 Qc3 20.Qc2 Re1+ 21.Kh2 Rxb1
22.Qxb1 Re1 23.Qa2 Qe3 24.Qb2 Qxf4+
25.g3 Qf3 26.Nxa5
30885840 11: 86.4 +1.13 Qc5 19.h3 Qc3 20.Qc2 Re1+ 21.Kh2 Rxb1
22.Qxb1 Re1 23.Qa2 Qe3 24.Qb2 Qxf4+
25.g3 Qf3 26.Nxa5
41769513 12 116.6 +1.05 Qc5 19.h3 Qc3 20.Qc2 Re1+ 21.Kh2 Rxb1
22.Qxb1 Re1 23.Qa2 Qe3 24.Qb2 Qxf4+
25.g3 Qf3 26.Bc4
81139447 12: 219.0 +1.05 Qc5 19.h3 Qc3 20.Qc2 Re1+ 21.Kh2 Rxb1
22.Qxb1 Re1 23.Qa2 Qe3 24.Qb2 Qxf4+
25.g3 Qf3 26.Bc4
127069906 13 345.6 +1.46 Qc5 19.h3 Qc3 20.Qc2 Re1+ 21.Kh2 Rxb1
22.Qxb1 Re1 23.Qc2 Qe3 24.f5 gxf5
25.Ba2 Qg1+ 26.Kg3 Re4 27.Nxa5
301052740 13: 811.8 +1.46 Qc5 19.h3 Qc3 20.Qc2 Re1+ 21.Kh2 Rxb1
22.Qxb1 Re1 23.Qc2 Qe3 24.f5 gxf5
25.Ba2 Qg1+ 26.Kg3 Re4 27.Nxa5
510834886 14 1387.7 +1.36 Qc5 19.h3 Qc3 20.Qc2 Re1+ 21.Kh2 Rxb1
22.Qxb1 Re1 23.Qc2 Qe3 24.Nxa5 Qg1+
25.Kg3 Re3+ 26.Kg4 Rc3 27.Qe2 Qh2
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Re: Move horizon example?
Thanks Miguel, I don't fully understand what your output says, what are the columns?
you just mention 45 seconds to find a positive score. Does your program take long to evaluate the given position as an easy forced win? Another question might be how likely is your program, or any program, how likely is it to sac material in order to reach this position.
regards.
you just mention 45 seconds to find a positive score. Does your program take long to evaluate the given position as an easy forced win? Another question might be how likely is your program, or any program, how likely is it to sac material in order to reach this position.
regards.
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Re: Move horizon example?
Columns areFguy64 wrote:Thanks Miguel, I don't fully understand what your output says, what are the columns?
you just mention 45 seconds to find a positive score. Does your program take long to evaluate the given position as an easy forced win? Another question might be how likely is your program, or any program, how likely is it to sac material in order to reach this position.
regards.
total nodes searched (accumulated) .......... Plies .......seconds......... score...... variations
Based on the scores, it is possible that an engine will sacrifice a pawn to reach this position. At least, I do not think that my engine will see a winning score in a reasonable time, but 1.5 paws is pretty good.
Miguel
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Re: Move horizon example?
Let it search a bit longer. Crafty:michiguel wrote:Columns areFguy64 wrote:Thanks Miguel, I don't fully understand what your output says, what are the columns?
you just mention 45 seconds to find a positive score. Does your program take long to evaluate the given position as an easy forced win? Another question might be how likely is your program, or any program, how likely is it to sac material in order to reach this position.
regards.
total nodes searched (accumulated) .......... Plies .......seconds......... score...... variations
Based on the scores, it is possible that an engine will sacrifice a pawn to reach this position. At least, I do not think that my engine will see a winning score in a reasonable time, but 1.5 paws is pretty good.
Miguel
Code: Select all
10-> 0.19 -0.09 1. ... Qc5 2. h3 Qc3 3. Kh2 R8e4 4.
Bc2 Rxf4 5. Rb3 Qc5 6. Rxe3 Qxe3 7.
Nxa5 (s=2)
11 0.21 -0.09 1. ... Qc5 2. h3 Qc3 3. Kh2 R8e4 4.
Bc2 Rxf4 5. Rb3 Qc5 6. Rxe3 Qxe3 7.
Nxa5
11-> 0.22 -0.09 1. ... Qc5 2. h3 Qc3 3. Kh2 R8e4 4.
Bc2 Rxf4 5. Rb3 Qc5 6. Rxe3 Qxe3 7.
Nxa5
12 0.28 -0.09 1. ... Qc5 2. h3 Qc3 3. Kh2 R8e4 4.
Bc2 Rxf4 5. Rb3 Qc5 6. Rxe3 Qxe3 7.
Nxa5
12-> 0.32 -0.09 1. ... Qc5 2. h3 Qc3 3. Kh2 R8e4 4.
Bc2 Rxf4 5. Rb3 Qc5 6. Rxe3 Qxe3 7.
Nxa5
13 0.51 -0.06 1. ... Qc5 2. h3 R8e4 3. Rc1 Rd3 4.
Rxc5 Rxd1+ 5. Bxd1 dxc5 6. Kh2 c4 7.
Kg3 Re1 8. Bg4
13-> 0.83 -0.06 1. ... Qc5 2. h3 R8e4 3. Rc1 Rd3 4.
Rxc5 Rxd1+ 5. Bxd1 dxc5 6. Kh2 c4 7.
Kg3 Re1 8. Bg4 (s=3)
14 1.09 -0.34 1. ... Qc5 2. h3 Rc3 3. Qd4 Qxd4 4.
Nxd4 Ree3 5. Bc2 Kg7 6. Rb3 Rxb3 7.
Nxb3 Re2 8. Bd3 (s=2)
14-> 1.13 -0.34 1. ... Qc5 2. h3 Rc3 3. Qd4 Qxd4 4.
Nxd4 Ree3 5. Bc2 Kg7 6. Rb3 Rxb3 7.
Nxb3 Re2 8. Bd3
15 1.48 -0.51 1. ... Qc5 2. h3 R8e4 3. Rc1 Rc3 4.
Rxc3 Qxc3 5. Kh2 Re1 6. Qc2 Qe3 7.
Nxa5 Rc1 8. Qb2 Qxf4+ 9. g3 <HT>
15-> 1.52 -0.51 1. ... Qc5 2. h3 R8e4 3. Rc1 Rc3 4.
Rxc3 Qxc3 5. Kh2 Re1 6. Qc2 Qe3 7.
Nxa5 Rc1 8. Qb2 Qxf4+ 9. g3 <HT>
16 1.84 -0.63 1. ... Qc5 2. h3 R8e4 3. Rc1 Rc3 4.
Rxc3 Qxc3 5. Kh2 Re1 6. Qc2 Qe3 7.
Nxa5 Qxf4+ 8. g3 Qf3 9. Qg2 Re2
16-> 2.42 -0.63 1. ... Qc5 2. h3 R8e4 3. Rc1 Rc3 4.
Rxc3 Qxc3 5. Kh2 Re1 6. Qc2 Qe3 7.
Nxa5 Qxf4+ 8. g3 Qf3 9. Qg2 Re2 (s=2)
17 3.76 -0.74 1. ... Qc5 2. h3 R8e4 3. Kh2 Rc3 4.
Qg1 Ree3 5. Ba2 Kg7 6. h4 b3 7. Bxb3
Rxb3 8. Rxb3 Rxb3 9. Qxc5 dxc5 10.
Nxa5
17-> 4.16 -0.74 1. ... Qc5 2. h3 R8e4 3. Kh2 Rc3 4.
Qg1 Ree3 5. Ba2 Kg7 6. h4 b3 7. Bxb3
Rxb3 8. Rxb3 Rxb3 9. Qxc5 dxc5 10.
Nxa5
18 5.51 -1 1. ... Qc5!
18 9.55 -3 1. ... Qc5!
18 12.16 -M 1. ... Qc5!
18 16.57 -3.95 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4.
Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7.
f5 Qf4+ 8. g3 Qf3 9. Qg2 Qxb3 10. Qd2
Re4
18-> 16.74 -3.95 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4.
Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7.
f5 Qf4+ 8. g3 Qf3 9. Qg2 Qxb3 10. Qd2
Re4
19 18.04 -1 1. ... Qc5!
19 31.13 -4.44 1. ... Qc5 2. Ne5 dxe5 3. f5 gxf5 4.
d6 Rc8 5. h3 Rg3 6. d7 Rd8 7. Rc1 Qe7
8. Rc8 e4 9. Bxf7+ Kxf7 10. Qd5+ Kf6
11. Rxd8 Qxd8 12. Qd6+ Kf7 13. Qxg3
Qxd7
19-> 31.32 -4.44 1. ... Qc5 2. Ne5 dxe5 3. f5 gxf5 4.
d6 Rc8 5. h3 Rg3 6. d7 Rd8 7. Rc1 Qe7
8. Rc8 e4 9. Bxf7+ Kxf7 10. Qd5+ Kf6
11. Rxd8 Qxd8 12. Qd6+ Kf7 13. Qxg3
Qxd7
20 44.76 -4.80 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4.
Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7.
Bc4 Rc1 8. Qe2 Qxf4+ 9. g3 Qxc4 10.
Qxc4 Rxc4 11. Nxa5 Rc2+ 12. Kg1 <HT>
20-> 45.10 -4.80 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4.
Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7.
Bc4 Rc1 8. Qe2 Qxf4+ 9. g3 Qxc4 10.
Qxc4 Rxc4 11. Nxa5 Rc2+ 12. Kg1 <HT>
21 1:04 -4.91 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4.
Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7.
Bc4 Rc1 8. Qe2 Qxf4+ 9. g3 Qxc4 10.
Qxc4 Rxc4 11. Nxa5 Rc2+ 12. Kg1 Kg7
21-> 1:05 -4.91 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4.
Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7.
Bc4 Rc1 8. Qe2 Qxf4+ 9. g3 Qxc4 10.
Qxc4 Rxc4 11. Nxa5 Rc2+ 12. Kg1 Kg7
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Re: Move horizon example?
RomiChessP3k WB2 47 MB:
1 00:00 1.10 e3e2
2 00:00 0.94 e3e2 b3c2
3 00:00 0.99 e3e2 d1c1 b6c5
4 00:00 0.71 e3e2 b3c4 e2f2
5 00:00 0.92 e3e4 d1c1 e4e2 b1b2
6 00:00 0.75 e3e4 d1f1 e4e2 b3c4 e2c2 c4d3
7 00:00 0.79 f7f6 b1c1 g6g5 b3c2 b4b3 c2d3 g5f4
8 00:00 0.62 f7f6 d1c1 f6f5 b3c4 b6c5 c1f1 h7h6 b1c1
9 00:00 0.67 f7f6 d1c1 f6f5 b3c4 e8e4 c4b5 h7h6 c1d2 e4f4 c6a5
10 00:00 0.97 b6c5
11 00:01 0.94 b6c5 h2h3 e8e4 b1c1 e3d3 c1c5 d3d1 b3d1 e4e1 h1h2 d6c5 d1g4 f7f5
12 00:01 0.99 b6c5 h2h3 e8e4 b1c1 e3c3 c1c3 b4c3 d1g1 c5g1 h1g1 e4f4 c6a5 f4b4 g2g3 g6g5
13 00:02 0.99 b6c5 h2h3 e8e4 b1c1 e3c3 c1c3 b4c3 d1g1 c5g1 h1g1 e4f4 c6a5 f4b4 g2g3 g6g5
14 00:04 1.05 b6c5 h2h3 e8e4 b1c1 e3c3 c1c3 b4c3 d1g1 e4e2 g1c5 d6c5 c6a5 c3c2 b3c2 e2c2 d5d6 g8g7
15 00:17 0.97 b6c5 h2h3 c5c3 d1c2 c3f6 c2f2 f6f5 f2f1 f5e4 h1h2 e3e2 c6a5 e2g2 f1g2
16 00:29 1.27 b6c5 h2h3
17 00:51 1.27 b6c5 h2h3 c5c3 d1c2 e3e1
18 02:04 3.89 b6c5 h2h3 c5c3 d1d4 e3e1 b1e1 e8e1 h1h2 c3b3 c6a5 b3b1 d4d2 b1e4 d2f2 e1a1 a5c6 a1a4 f4f5 b4b3 f5g6 f7g6 f2d2
1 00:00 1.10 e3e2
2 00:00 0.94 e3e2 b3c2
3 00:00 0.99 e3e2 d1c1 b6c5
4 00:00 0.71 e3e2 b3c4 e2f2
5 00:00 0.92 e3e4 d1c1 e4e2 b1b2
6 00:00 0.75 e3e4 d1f1 e4e2 b3c4 e2c2 c4d3
7 00:00 0.79 f7f6 b1c1 g6g5 b3c2 b4b3 c2d3 g5f4
8 00:00 0.62 f7f6 d1c1 f6f5 b3c4 b6c5 c1f1 h7h6 b1c1
9 00:00 0.67 f7f6 d1c1 f6f5 b3c4 e8e4 c4b5 h7h6 c1d2 e4f4 c6a5
10 00:00 0.97 b6c5
11 00:01 0.94 b6c5 h2h3 e8e4 b1c1 e3d3 c1c5 d3d1 b3d1 e4e1 h1h2 d6c5 d1g4 f7f5
12 00:01 0.99 b6c5 h2h3 e8e4 b1c1 e3c3 c1c3 b4c3 d1g1 c5g1 h1g1 e4f4 c6a5 f4b4 g2g3 g6g5
13 00:02 0.99 b6c5 h2h3 e8e4 b1c1 e3c3 c1c3 b4c3 d1g1 c5g1 h1g1 e4f4 c6a5 f4b4 g2g3 g6g5
14 00:04 1.05 b6c5 h2h3 e8e4 b1c1 e3c3 c1c3 b4c3 d1g1 e4e2 g1c5 d6c5 c6a5 c3c2 b3c2 e2c2 d5d6 g8g7
15 00:17 0.97 b6c5 h2h3 c5c3 d1c2 c3f6 c2f2 f6f5 f2f1 f5e4 h1h2 e3e2 c6a5 e2g2 f1g2
16 00:29 1.27 b6c5 h2h3
17 00:51 1.27 b6c5 h2h3 c5c3 d1c2 e3e1
18 02:04 3.89 b6c5 h2h3 c5c3 d1d4 e3e1 b1e1 e8e1 h1h2 c3b3 c6a5 b3b1 d4d2 b1e4 d2f2 e1a1 a5c6 a1a4 f4f5 b4b3 f5g6 f7g6 f2d2
If you are on a sidewalk and the covid goes beep beep
Just step aside or you might have a bit of heat
Covid covid runs through the town all day
Can the people ever change their ways
Sherwin the covid's after you
Sherwin if it catches you you're through
Just step aside or you might have a bit of heat
Covid covid runs through the town all day
Can the people ever change their ways
Sherwin the covid's after you
Sherwin if it catches you you're through
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Re: Move horizon example?
I'm not adept at interpreting these outputs, but . In all the cases where Iquestion-marked Black's 7th move, I see the preferred continuation for black as 7...Qg1+ 8.Kg3 Re3+ followed by 9...Qe1 and white either gets mated or suffers huge material loss.bob wrote:Let it search a bit longer. Crafty:michiguel wrote:Columns areFguy64 wrote:Thanks Miguel, I don't fully understand what your output says, what are the columns?
you just mention 45 seconds to find a positive score. Does your program take long to evaluate the given position as an easy forced win? Another question might be how likely is your program, or any program, how likely is it to sac material in order to reach this position.
regards.
total nodes searched (accumulated) .......... Plies .......seconds......... score...... variations
Based on the scores, it is possible that an engine will sacrifice a pawn to reach this position. At least, I do not think that my engine will see a winning score in a reasonable time, but 1.5 paws is pretty good.
MiguelCode: Select all
<snip> 18 5.51 -1 1. ... Qc5! 18 9.55 -3 1. ... Qc5! 18 12.16 -M 1. ... Qc5! 18 16.57 -3.95 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4. Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7. f5 Qf4+? 8. g3 Qf3 9. Qg2 Qxb3 10. Qd2 Re4 18-> 16.74 -3.95 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4. Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7. f5 f4+? 8. g3 Qf3 9. Qg2 Qxb3 10. Qd2 Re4 19 18.04 -1 1. ... Qc5! 19 31.13 -4.44 1. ... Qc5 2. Ne5 dxe5 3. f5 gxf5 4. d6 Rc8 5. h3 Rg3 6. d7 Rd8 7. Rc1 Qe7 8. Rc8 e4 9. Bxf7+ Kxf7 10. Qd5+ Kf6 11. Rxd8 Qxd8 12. Qd6+ Kf7 13. Qxg3 Qxd7 19-> 31.32 -4.44 1. ... Qc5 2. Ne5 dxe5 3. f5 gxf5 4. d6 Rc8 5. h3 Rg3 6. d7 Rd8 7. Rc1 Qe7 8. Rc8 e4 9. Bxf7+ Kxf7 10. Qd5+ Kf6 11. Rxd8 Qxd8 12. Qd6+ Kf7 13. Qxg3 Qxd7 20 44.76 -4.80 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4. Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7. Bc4 Rc1? 8. Qe2 Qxf4+ 9. g3 Qxc4 10. Qxc4 Rxc4 11. Nxa5 Rc2+ 12. Kg1 <HT> 20-> 45.10 -4.80 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4. Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7. Bc4 Rc1 8. Qe2 Qxf4+ 9. g3 Qxc4 10. Qxc4 Rxc4 11. Nxa5 Rc2+ 12. Kg1 <HT> 21 1:04 -4.91 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4. Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7. Bc4 Rc1? 8. Qe2 Qxf4+ 9. g3 Qxc4 10. Qxc4 Rxc4 11. Nxa5 Rc2+ 12. Kg1 Kg7 21-> 1:05 -4.91 1. ... Qc5 2. h3 Qc3 3. Kh2 Re1 4. Qc2 Rxb1 5. Qxb1 Re1 6. Qc2 Qe3 7. Bc4 Rc1? 8. Qe2 Qxf4+ 9. g3 Qxc4 10. Qxc4 Rxc4 11. Nxa5 Rc2+ 12. Kg1 Kg7
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Re: Move horizon example?
OK, I am not so sure, I mat have missed something here, hang on...
nah I'll stick with it, I did not put an engine on this, but I feel that after 7.f5 Qg1+ 8.Kg3 Re3+ 9.Kf4 Qe1 Black should win at the very least up the exchange and pawn in a superior position.
nah I'll stick with it, I did not put an engine on this, but I feel that after 7.f5 Qg1+ 8.Kg3 Re3+ 9.Kf4 Qe1 Black should win at the very least up the exchange and pawn in a superior position.
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Re: Move horizon example?
[d]4r1k1/5p1p/1qNp2p1/p2P4/Pp3P2/1B2r3/6PP/1R1Q3K b - - 0 36
_No one can hit as hard as life.But it ain’t about how hard you can hit.It’s about how hard you can get hit and keep moving forward.How much you can take and keep moving forward….
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Re: Move horizon example?
My experimental bitboard engine:
Code: Select all
[1/1] 0.000 1 -32 f6
[1/1] 0.000 2 -29 ++2/39 f7f5
[1/1] 0.000 3 -29 f5
[1/4] 0.000 11 -4 ++7/39 Re3e1
[1/4] 0.000 15 -4 Re1 Qxe1 Rxe1 Rxe1
[1/6] 0.000 53 -4 ok/53.0
[2/11] 0.015 625 20 Re1 Qxe1 Rxe1 Rxe1 Qf2 Rb1
[2/11] 0.015 834 20 ok/15.7
[3/13] 0.015 1216 38 Re1 Qxe1 Rxe1 Rxe1 Qf2 Rb1 f5
[3/13] 0.015 1596 38 ok/1.9
[4/17] 0.015 3262 47 Re1 Qxe1 Rxe1 Rxe1 Qf2 Rb1 Qxf4 Nxa5 f5
[4/17] 0.015 3752 47 ok/2.4
[5/19] 0.047 21531 26 Re1 Qxe1 Rxe1 Rxe1 f5 Re2 Qc5 Re8 Kg7 Re7 Kh6 g3
[5/19] 0.047 25484 26 ok/6.8
[6/26] 0.094 46468 40 Re1 Qxe1 Rxe1 Rxe1 Qf2 Rd1 Qxf4 Nxa5 f5 Nc6 Kf7
[6/26] 0.094 49495 40 ok/1.9
[7/26] 0.125 68805 28 Re1 Qxe1 Rxe1 Rxe1 Qf2 Rb1 Qxf4 Nxa5 Qe4 Rc1 Qe3 Rc8 Kg7
[7/26] 0.140 79968 28 ok/1.6
[8/26] 0.156 93089 40 Re1 Qxe1 Rxe1 Rxe1 Qf2 Rb1 Qxf4 Nxa5 Qe4 Rc1 Qe3 Rc8 Kg7 g3
[8/26] 0.172 100k 40 ok/1.3
[9/28] 0.875 586k 35 Re1 Qxe1 Rxe1 Rxe1 Qc5 Rd1 h5 g3 Kg7 Kg2 Kf6 h3 g5 fxg5 Kxg5
[9/28] 0.906 617k 36 ++15/39 Qb6c5
[9/28] 1.109 752k 58 Qc5 h3 Qc3 Qc2 Re1 Kh2 Rxb1 Qxb1 Re1 Qc2
[9/28] 1.125 755k 58 ok/7.5
[10/28] 1.203 813k 66 Qc5 h3 Qc3 Qc2 Re1 Kh2 Rxb1 Qxb1 Re1 Qc2 Qe3 Nxa5 Qxf4 g3
[10/28] 1.281 878k 66 ok/1.2
[11/28] 1.437 997k 66 Qc5 h3 Qc3 Qc2 Re1 Kh2 Rxb1 Qxb1 Re1 Qc2 Qe3 Nxa5 Qxf4 g3
[11/28] 1.531 1062k 66 ok/1.2
[12/34] 2.375 1634k 307 Qc5 h3 Qc3 Qc2 Re1 Kh2 Rxb1 Qxb1 Re1 Qc2 Qe3 Nxb4 Qxf4 g3 Qxb4 Bc4
[12/34] 2.390 1661k 307 ok/1.6
[13/40] 3.297 2301k 337 Qc5 h3 Qc3 Qc2 Re1 Kh2 Rxb1 Qxb1 Re1 Qc2 Qe3 Nxb4 axb4 a5 Qxf4 g3
[13/40] 3.375 2380k 337 ok/1.4
[14/42] 4.656 3264k 326 Qc5 h3 Qc3 Ne5 dxe5 f5 gxf5 Qh5 Re1 Rxe1 Qxe1 Kh2 Qe3 d6 Qf4 Kg1 Rf8 d7 e4
[14/42] 4.765 3399k 326 ok/1.4
[15/42] 6.781 4813k 331 Qc5 h3 Qc3 Ne5 dxe5 f5 Rd3 Qe2 Rd8 fxg6 fxg6 Qg4 Kg7 Qe6 Rf8 d6
[15/42] 7.031 5056k 331 ok/1.5
[16/43] 11.094 7916k 336 Qc5 h3 Qc3 Ne5 dxe5 f5 Rd8 fxg6 fxg6 Qg4 Rd6 Kh2 h5 Qg5 Qd3 Rb2 Re2
[16/43] 11.531 8328k 336 ok/1.6