Author: Robert Hyatt
Date: 19:07:42 04/27/04
Go up one level in this thread
On April 27, 2004 at 21:17:05, Andrew Wagner wrote:
>On April 27, 2004 at 20:51:07, Will Singleton wrote:
>
>>Just looks like tactical error. 58.Qe8+ allows the enemy king to penetrate the
>>pawn wall, so the king and queen can threaten material and mate. Maybe you
>>still need more depth. How long does it take Trueno to switch to Qd7? (if the
>>king now tries to penetrate, lots of pawns fall.)
>
>I assume you're talking about 56. Qd7 there. The position is:
>
>[d] 8/5p2/3p4/2p1k1p1/Q1PqP2p/5P1P/6PK/8 w - - 22 56
>
>Unfortunately it takes Trueno a good 36 seconds to find that Qd7 is better.
>Perhaps my endgame king pcsq table needs some revising. What do others get here?
>Andrew
>
>1. Score: .24; Time: 0; nodes: 71; PV: a4-e8 e5-f6
>2. Score: .7; Time: 0; nodes: 646; PV: a4-e8 e5-f4 e8-f7 f4-e3
>3. Score: .93; Time: 0; nodes: 1976; PV: a4-e8 e5-f4 e8-f7 f4-e3 h2-g1
>4. Score: .15; Time: 0; nodes: 10810; PV: a4-e8 e5-f6 e8-a4 f6-e7 h2-h1
>5. Score: .17; Time: 1; nodes: 35936; PV: a4-e8 e5-f6 e8-d8 f6-g6 d8-g8 d4-g7
>g8-a8 g7-b2
>6. Score: .16; Time: 2; nodes: 88255; PV: a4-e8 e5-f6 e8-d8 f6-g6 d8-g8 d4-g7
>g8-b8 g7-e5 h2-h1 e5-a1 h1-h2
>7. Score: .27; Time: 11; nodes: 449614; PV: a4-e8 e5-f6 e8-d8 f6-g6 d8-g8 d4-g7
>g8-a8 g6-f6 e4-e5 f6-e6 a8-e8 e6-f5
>8. Score: .12; Time: 36; nodes: 1531330; PV: a4-d7 d4-c4 d7-g4 e5-d4 e4-e5 d4-d5
>g4-c4 d5-c4 e5-d6 f7-f5 d6-d7
5 0.09 0.06 1. Qd7 Qxc4 2. Qf5+ Kd4 3. Qxg5 Qe6
4. Qxh4
5-> 0.11 0.06 1. Qd7 Qxc4 2. Qf5+ Kd4 3. Qxg5 Qe6
4. Qxh4
6 0.13 0.04 1. Qd7 Qxc4 2. Qf5+ Kd4 3. Qf6+ Kd3
4. Qxg5 Qd4 5. Qxh4
6-> 0.16 0.04 1. Qd7 Qxc4 2. Qf5+ Kd4 3. Qf6+ Kd3
4. Qxg5 Qd4 5. Qxh4
7 0.20 -0.11 1. Qd7 Qxc4 2. Qf5+ Kd4 3. Qxg5 Qe6
4. Qxh4 Qe5+ 5. Qg3 c4
7-> 0.29 -0.11 1. Qd7 Qxc4 2. Qf5+ Kd4 3. Qxg5 Qe6
4. Qxh4 Qe5+ 5. Qg3 c4
8 0.48 0.23 1. Qd7 Qxc4 2. Qe7+ Qe6 3. Qxg5+ Kd4
4. Qxh4 Qe5+ 5. g3 c4 6. Qd8
8-> 0.54 0.23 1. Qd7 Qxc4 2. Qe7+ Qe6 3. Qxg5+ Kd4
4. Qxh4 Qe5+ 5. g3 c4 6. Qd8
9 0.68 0.00 1. Qd7 Qxc4 2. Qe7+ Qe6 3. Qxg5+ Kd4
4. Qxh4 Qe5+ 5. Kh1 Kd3 6. Qf2 c4
9-> 1.01 0.00 1. Qd7 Qxc4 2. Qe7+ Qe6 3. Qxg5+ Kd4
4. Qxh4 Qe5+ 5. Kh1 Kd3 6. Qf2 c4
10 1.35 0.09 1. Qd7 Qxc4 2. Qe7+ Qe6 3. Qxg5+ Kd4
4. Qxh4 Qe5+ 5. Kh1 c4 6. Qf2+ Kd3
7. Qf1+ Kd4 8. Qd1+ Ke3
10-> 1.60 0.09 1. Qd7 Qxc4 2. Qe7+ Qe6 3. Qxg5+ Kd4
4. Qxh4 Qe5+ 5. Kh1 c4 6. Qf2+ Kd3
7. Qf1+ Kd4 8. Qd1+ Ke3
11 2.13 0.28 1. Qd7 Qxc4 2. Qe7+ Qe6 3. Qxg5+ Kd4
4. Qxh4 Qe5+ 5. Kg1 c4 6. Qf2+ Kd3
7. Qf1+ Kd4 8. Qd1+ Ke3 9. h4
11-> 2.57 0.28 1. Qd7 Qxc4 2. Qe7+ Qe6 3. Qxg5+ Kd4
4. Qxh4 Qe5+ 5. Kg1 c4 6. Qf2+ Kd3
7. Qf1+ Kd4 8. Qd1+ Ke3 9. h4
The above from my 750mhz laptop.
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