Author: Ernst Walet
Date: 10:34:37 09/09/02
Go up one level in this thread
On September 04, 2002 at 14:23:37, Roy Eassa wrote:
>On September 03, 2002 at 18:44:37, Ernst Walet wrote:
>
>>On September 01, 2002 at 15:25:12, Roy Eassa wrote:
>>
>>>Nunn - Ward
>>>
>>>[d] r3r1kb/p2bp2p/1q1p1npB/5NQ1/2p1P1P1/2N2P2/PPP5/2KR3R w - - 0 1
>>>
>>Result of Hiarcs8. Any other engine plays this move?
>>
>>1.Qd2 Rab8 2.b3 Qc5
>> ² (0.62) Depth: 3/11 00:00:00
>>1.Qd2 Rab8 2.b3 Qc5
>> ² (0.62) Depth: 3/11 00:00:00
>>1.Qd2 Rab8 2.b3 Qc5
>> ² (0.62) Depth: 3/11 00:00:00
>>1.Qd2 Rab8 2.b3 Qc5
>> ² (0.62) Depth: 3/11 00:00:00
>>1.Qd2 Rab8
>> ² (0.36) Depth: 4/15 00:00:00
>>1.Qd2 gxf5 2.gxf5 Kf7
>> ³ (-0.52) Depth: 4/16 00:00:00
>>1.e5 Rab8 2.b3 dxe5
>> = (-0.13) Depth: 4/16 00:00:00
>>1.Ne3 Be6 2.Qf4 a5
>> ² (0.53) Depth: 4/16 00:00:00
>>1.Ne3 Rab8
>> = (0.25) Depth: 5/16 00:00:00 17kN
>>1.Ne3 Rab8 2.Nxc4 Qb4 3.Rd4 Be6
>> = (0.22) Depth: 5/16 00:00:00 20kN
>>1.Nxe7+ Kf7
>> ± (0.81) Depth: 5/19 00:00:00 31kN
>>1.Nxe7+ Rxe7 2.Nd5 Nxd5 3.Qxd5+ Re6 4.Qxa8+ Re8 5.Qd5+ Be6 6.Qxd6 Qxb2+ 7.Kd2
>>Qxa2
>> +- (1.73) Depth: 5/20 00:00:00 37kN
>>1.Nxe7+ Rxe7 2.Nd5
>> +- (1.73) Depth: 6/20 00:00:00 48kN
>>1.Nxe7+ Rxe7
>> +- (1.48) Depth: 7/23 00:00:00 93kN
>>1.Nxe7+ Rxe7 2.Nd5 Nxd5 3.Qxd5+ Re6 4.Qxa8+ Re8
>> ± (1.31) Depth: 7/27 00:00:01 172kN
>>1.Nxe7+ Rxe7 2.Nd5
>> ± (1.31) Depth: 8/27 00:00:02 365kN
>>1.Nxe7+ Rxe7
>> +- (1.56) Depth: 9/31 00:00:09 1507kN
>>1.Nxe7+ Rxe7
>> +- (1.56) Depth: 9/31 00:00:10 1616kN
>>1.Nxe7+ Rxe7
>> ± (1.31) Depth: 10/34 00:00:31 4722kN
>>1.Nxe7+ Rxe7 2.Nd5 Nxd5 3.Qxd5+ Re6 4.Qxa8+ Re8 5.Qxe8+ Bxe8 6.c3 Be5 7.Rd2 Bc6
>>8.Bg5 Ba4
>> -+ (-2.09) Depth: 10/38 00:01:34 12968kN
>>1.Ne3 Rab8 2.b3 Qb4 3.Nb1 cxb3 4.axb3 Rbc8 5.Rd3 Be6 6.Qf4
>> ³ (-0.63) Depth: 10/38 00:02:20 18508kN
>>1.e5 dxe5 2.Nh4 Kf7 3.Kb1 Bc6 4.Qe3 Reb8 5.b3 cxb3 6.axb3 Qxe3 7.Bxe3
>> ³ (-0.45) Depth: 10/38 00:04:55 37531kN
>>1.Nh4 Kf7 2.Qe3 Qb7 3.Ng2 Reb8 4.b3 cxb3 5.axb3 Qb4 6.Kd2
>> = (-0.17) Depth: 10/39 00:08:03 61228kN
>>1.Bg7 Bxg7 2.Nxg7 Reb8 3.Nh5 Qxb2+ 4.Kd2 Nxh5 5.gxh5 Qb6 6.Ke2 Qb2 7.Kd2
>> = (0.00) Depth: 10/39 00:13:25 103364kN
>>1.Bg7 Bxg7 2.Nxg7 Reb8 3.Nh5 Qxb2+ 4.Kd2 Nxh5 5.gxh5 Qb6 6.Ke2 Qb2 7.Kd2
>> = (0.00) Depth: 11/40 00:32:26 243161kN
>>
>>(Athlon 4 XP1500+, 128MB hash 02.09.2002)
>
>
>Thanks, your input has helped me add a crucial variation to my analysis:
>
>1.Bg7! Bxg7 2.Nxg7 Kxg7
>
> [2...Reb8 3.Nh5 Qxb2+ 4.Kd2 Re8
> (4...Nxh5 5.gxh5 +-)
> 5.Nxf6+ exf6 6.Qh6 Re7 7.Rb1 Qa3 8.Nd5 +-]
>
>3.Nd5 Qb5 4.Qh6+ Kf7 5.g5
>
> [5.Nxf6 c3 6.bxc3 exf6
> (6...Kxf6 7.Rd5 +-)
> {6...Rh8 7.Nxh7 Rab8 8.Qf4+ Kg7 9.e5! +-)
> 7.Qxh7+ Kf8 8.e5 Qxe5 9.Qxd7 Re7 10.Qxd6 Qxd6 11.Rxd6 Kg7 is slower]
>
>5...Rab8
>
> [5...Nh5 6.Qxh7+ Ng7 7.Rh4 +-]
>
> [5...c3 6.bxc3 e6
> (6...Nh5 7.Qxh7+ Ng7 8.Rh4 +-)
> 7.Nc7 Qc5 8.gxf6 Kxf6 9.Qf4+ Kg7 10.Rxh7+ Kxh7 11.Qf7+ Kh6 12.Rh1+ Qh5
> (12...Kg5 13.f4+ Kg4 14.Qxg6+ leading to mate)
> 13.Rxh5+ gxh5 14.Nxa8 +-]
>
>6.gxf6 Qxb2+ 7.Kd2 Bf5
>
> [7...Ba4 8.Qxh7+ Ke6 9.f7 +-]
>
>8.exf5 Qd4+ 9.Ke2 exf6+ 10.Ne3 +-
>
>
>I think this is a good puzzle. So far, only Hiarcs sees the first move, but it
>doesn't realize that White is winning.
>
>So this is the challenge: does any program see the first move and give White a
>strongly positive score (say, +1.5 or better)?
Tried Fritz this time...
Ernst.
New game
r3r1kb/p2bp2p/1q1p1npB/5NQ1/2p1P1P1/2N2P2/PPP5/2KR3R w - - 0 1
Analysis by Fritz 7:
1.Ne3!
= (0.16) Depth: 7/28 00:00:00 213kN
1.Ne3!
² (0.31) Depth: 7/31 00:00:00 231kN
1.Ne3 Be6 2.Qb5 Nd7 3.Ned5 Qxb5 4.Nxb5 Rab8
² (0.56) Depth: 7/31 00:00:00 257kN
1.Ne3 Be6 2.Qb5 Nd7 3.Ned5 Qxb5 4.Nxb5 Rab8 5.a4
² (0.59) Depth: 8/26 00:00:01 516kN
1.Ne3 Rac8 2.Ned5 Qb7 3.Nxf6+ Bxf6 4.Qd5+ Qxd5 5.Nxd5 Kf7 6.Nxf6 Kxf6 7.g5+ Ke5
² (0.53) Depth: 9/28 00:00:02 1390kN
1.Ne3 Rab8 2.Nxc4 Qb4 3.Rd4 Be6 4.a3 Qb7 5.b3 Nxg4
² (0.31) Depth: 10/29 00:00:06 3073kN
1.Ne3--
= (0.03) Depth: 11/32 00:00:14 8071kN
1.Ne3 Rab8 2.Nxc4 Qb4 3.Rd4 Be6 4.a3 Qb7 5.b3 Nxg4 6.Na5
= (-0.03) Depth: 11/35 00:00:16 8914kN
1.Rde1!
= (0.00) Depth: 11/35 00:00:22 12781kN
1.Rde1 Rab8 2.Nd1 e6 3.Nfe3 Qa6 4.a3 Rec8 5.Qf4 e5 6.Qg5 Qa5
= (-0.03) Depth: 12/40 00:00:48 27250kN
1.Rde1 Rab8 2.Nd1 a5 3.Nfe3 c3 4.b3 Qb4 5.Nc4
= (-0.12) Depth: 13/44 00:02:33 89097kN
1.Bg7!
= (-0.09) Depth: 13/44 00:03:40 129126kN
1.Nh4!
= (-0.06) Depth: 13/44 00:05:37 198473kN
1.Nh4!
= (0.09) Depth: 13/44 00:05:55 209589kN
1.Nh4 Kf7 2.Qe3 Bc6 3.Ng2 Nd7 4.Qe2 Rab8 5.Qxc4+ d5 6.exd5 Qxb2+ 7.Kd2 Bb7 8.g5
= (0.13) Depth: 13/44 00:06:08 217665kN
1.Nh4 Kf7 2.Qe3 Bc6 3.Qxb6 axb6 4.Be3 Nd7 5.Bd4 Ra5 6.a3 Bxd4 7.Rxd4 Ne5 8.g5
= (0.09) Depth: 14/41 00:07:29 266235kN
1.Nh4 Kf7 2.Qe3 Reb8 3.Qxb6 axb6 4.Ng2 b5 5.a3 Ne8 6.Kd2 b4 7.axb4 Rxb4 8.Be3
= (0.06) Depth: 15/43 00:15:12 546713kN
1.Bg7!
= (0.09) Depth: 15/43 00:17:52 645136kN
1.Bg7!
= (0.25) Depth: 15/45 00:19:37 709085kN
1.Bg7!
² (0.56) Depth: 15/45 00:22:30 812439kN
1.Bg7!
± (0.84) Depth: 16/45 00:38:36 1397803kN
1.Bg7 Bxg7 2.Nxg7 Reb8 3.Nh5 Qxb2+ 4.Kd2 Bc6 5.Nxf6+ exf6 6.Qxf6 Qb7 7.Qe6+ Kg7
8.Qxc4
± (0.91) Depth: 16/45 00:46:31 1681668kN
1.Bg7!
± (1.19) Depth: 17/47 01:28:32 3220756kN
1.Bg7 Bxg7 2.Nxg7 Reb8 3.Nh5 Qxb2+ 4.Kd2 Bc6 5.Nxf6+ exf6 6.Qxf6 Qb7 7.Qe6+ Kg7
8.Qxc4
± (1.22) Depth: 18/47 03:09:33 6939174kN
1.Bg7!
+- (1.50) Depth: 19/50 07:41:33 16953361kN
(Celeron 1.2GHz, 832MB hash, 3, 4 and 5 piece EGTB's 09.09.2002)
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