Author: Dann Corbit
Date: 13:08:00 01/02/02
Go up one level in this thread
On January 02, 2002 at 15:52:42, David Rasmussen wrote:
>On January 01, 2002 at 18:48:38, Dann Corbit wrote:
>
>
>>But the amazing move is this one:
>>[D]1R6/k3rp1p/1p6/pP4p1/1P6/4qPB1/6PK/3R4 w - - bm Rdd8; am bxa5; c0 "WOW!";
>>
>>Absolutely incredible that Sjeng found Rdd8, since the vastly inferior bxa5
>>looks so good to programs. Now, bxa5 is a good enough move to probably win
>>eventually. But Rdd8 is a positive death blow!
>>
>>Which programs (after a good, long, think) choose Rdd8 over bxa5?
>>
>>You have really done something wonderful here.
>
>Mmm. Chezzz 1.0 alpha sticks to Rdd8 from day one, and there's nothing wonderful
>about Chezzz 1.0 alpha...
>
>WHITE(1): go
>I'm thinking...
>time nodes depth score pv
>00:00:00.21 57kn 06/11/13 +2.735 1. Rdd8 Re5 2. bxa5 bxa5
> 3. b6+ Ka6 4. Bxe5
>00:00:00.22 57kn 06/11/13 ---------------------------------------------------
>00:00:00.41 103kn 07/11/15 +2.403 1. Rdd8!
>00:00:00.41 103kn 07/11/15 ---------------------------------------------------
>00:00:00.58 159kn 08/15/19 +2.565 1. Rdd8 Re5 2. Ra8+ Kb7
> 3. Rdb8+ Kc7 4. Rc8+ Kd7
> 5. Rd8+ Ke6 6. Re8+ Kd7
> 7. Rad8+ Kc7 8. Bxe5+
>00:00:00.70 206kn 08/15/19 ---------------------------------------------------
>00:00:00.89 305kn 09/17/19 +2.275 1. Rdd8 Re5 2. Ra8+ Kb7
> 3. Rdb8+ Kc7 4. Re8 f6
> 5. Rac8+ Kb7 6. Rb8+ Kc7
> 7. Rxe5
>00:00:01.13 415kn 09/17/19 ---------------------------------------------------
>00:00:01.53 612kn 10/18/21 +2.385 1. Rdd8 Re5 2. Ra8+ Kb7
> 3. Rdb8+ Kc7 4. bxa5 bxa5
> 5. Rc8+ Kd7 6. Rd8+ Kc7
> 7. Rab8 a4 8. Bxe5+
>00:00:01.82 757kn 10/18/21 ---------------------------------------------------
>00:00:04.81 2305kn 11/20/25 9/34 1. Rc8
>
> Time used: 00:00:05.00
> nps: 481567 nodes: 2407839 Q-nodes: 817057 (33%)
> move order: 89%
> hash probes: 587961 hash hits: 170277 (28%) hash usage: 76%
> hash collision: 0
> pawn hash probes: 1819878 pawn hash hits: 1808720 (99%)
>1. Rdd8
>BLACK(1):
It's the 2. Ra8+ that is a mistake. Programs won't get the real value until
they spot the key move Rbc8 (at which point the ce should shoot through the
roof).
Rdd8 Re5 Rbc8 Kb7 Rc6 ...
^^^^
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