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Subject: Re: Test position

Author: John Merlino

Date: 10:32:40 05/19/01

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On May 19, 2001 at 11:03:49, Dieter Buerssner wrote:

>In the game Yace - Goldbar in Leiden, the following position was on the board:
>
>[D] 1r3rk1/p1q2pp1/3b3p/7Q/2b5/3NB2P/n1P2PP1/R3RBK1 w - -
>
>I think, this may be suitable as a test position. Yace here played Bxh6.
>What do other programs think?
>
>Regards,
>Dieter
>
>Yace on AMD K6-2 475, 30M hash:
>
>   4731871  32.256   0.33  9t  1.Qg4 f5 2.Qd4 Rf7 3.Be2 Bh2+ 4.Kf1 Bd6 5.Nc5
>                               Bxc5 6.Qxc5 {10}
>  10210373  1:09.6   0.34  9t+ 1.Bxh6 gxh6 2.Re4 Bxd3 3.cxd3 Bh2+ 4.Kh1 Qc4
>  12640730  1:27.3   0.66  9t  1.Bxh6 gxh6 2.Re4 Be6 3.Qxh6 Qc3 4.Rxe6 Qxa1
>                               5.Qg5+ Qg7 6.Qxg7+ Kxg7H {HT} {-340}
>  13611852  1:33.3   0.66  9.  1.Bxh6 gxh6 2.Re4 Be6 3.Qxh6 Qc3 4.Rxe6 Qxa1
>                               5.Qg5+ Qg7 6.Qxg7+ Kxg7 {HT} {-340}
>  48138295  5:21.8   0.86 10t  1.Bxh6 gxh6 2.Re4 Bh2+ 3.Kh1 Rb6 4.Qg4+ Rg6
>                               5.Rxc4 Rxg4 6.Rxc7 Bxc7 {HT} {-420}
>  52663477  5:50.6   0.86 10.  1.Bxh6 gxh6 2.Re4 Bh2+ 3.Kh1 Rb6 4.Qg4+ Rg6
>                               5.Rxc4 Rxg4 6.Rxc7 Bxc7 {HT} {-420}

Chessmaster 8000 MIGHT find this at tournament time controls, depending on the
hardware (it found it at 3:38 on my PIII-733). But it still doesn't feel to
happy about the move:

Time	Depth	Score	Positions	Moves
0:00	2/5	-0.02	28074		1. Bd4 Rfd8 2. Qh4 Rb5 3. Qe4 Ra5
0:01	2/5	0.01	39598		1. Bc5 Rfd8 2. Bxd6 Qxd6 3. Qa5
					Nb4 4. Nxb4 Rxb4 5. Bxc4 Rxc4 6.
					Qxa7
0:02	2/6	0.14	141533		1. Bc5 Rfc8 2. Bd4 Rb5 3. Qg4 Rg5
					4. Qe4
0:07	3/7	-0.03	476326		1. Bc5 Rfd8 2. Bxd6 Rxd6 3. Qe5
					f6 4. Qe3 Rd7
0:13	3/7	0.13	812755		1. Bd4 Rfd8 2. Ne5 Be6 3. c4 Bb4
					4. Red1 Bc3
0:29	3/8	0.13	1950348		1. Bd4 Rfd8 2. Ne5 Be6 3. c4 Bb4
					4. Red1 Bc3
2:04	4/9	0.01	8543908		1. Bd4 Rb5 2. Qg4 Rg5 3. Qe2 Rc8
					4. Qd2 Ra5 5. g3 Bd5 6. Bg2 Bxg2
					7. Kxg2
3:38	4/9	0.31	15158506	1. Bxh6 Rb5 2. Qg4 f5 3. Qg6 Rb6
					4. g3 f4 5. Nxf4 Bxf1 6. Qe6+ Rf7
					7. Qxa2 gxh6 8. Kxf1 Bxf4 9. gxf4
					Qxf4
6:16	4/10	0.12	27087830	1. Bxh6 Rb5 2. Qg4 f5 3. Qg6 Rb6
					4. g3 Nc3 5. Be3 Bc5 6. Qh5 g6

jm



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