Author: Steffen Jakob
Date: 06:27:13 04/28/99
Go up one level in this thread
On April 27, 1999 at 12:28:41, Peter Kappler wrote:
>I noticed Will didn't post a position this week, so I'll share one from a game
>Grok played as Black against Lambchop a couple of weeks ago on ICC.
>
>r3r2k/p1bb1pp1/qp5p/3pP3/PBp2P1Q/4P1RP/2B3P1/R5K1 w - - bm Rxg7;
>
>How long does it take your program to:
>a) find Rxg7
>b) realize Rxg7 is winning
>
>This is probably easy for programs with the single-reply extension.
>
>Lambchop found this in a blitz game - I think Peter McKenzie reported that it
>needed 6 seconds to see the move on his P133, and somewhere around 30-40 seconds
>to see the win. (Correct me if I'm remembering this wrong, Peter)
Nice position!!
As you can see below Hossa needs only 5 nodes to see this move *just kidding*
:-)
Unfortunately Hossa takes a long time compared to the other progs to see Rxg7
(it would have been slightly faster if I didnt listen to the rage against the
machine MP3 files at the same time ;-) :
depth score time nodes pv
1 -5.42 0.02 5 1.g3xg7 h8xg7
3/1 -1.35 0.04 44 1.e4
-->1 -1.35 0.19 85 1.e4
2 -1.70 0.21 217 1.e4 d4
7/2 -1.56 0.25 476 1.h4h5 d7e6
-->2 -1.56 0.40 815 1.h4h5 d7e6
3 -1.21 0.44 1413 1.h4h5 d7e6 2.e4
-->3 -1.21 0.51 2278 1.h4h5 d7e6 2.e4
4 -1.45 0.58 4295 1.h4h5 d7e6 2.a1d1 a8c8
20/4 -1.43 0.87 13397 1.b4c3 d7e6 2.e4 a8c8
-->4 -1.43 1.11 19557 1.b4c3 d7e6 2.e4 a8c8
5 -1.27 1.31 27282 1.b4c3 d7e6 2.e4 a8c8 3.h4h5
-->5 -1.27 1.78 43043 1.b4c3 d7e6 2.e4 a8c8 3.h4h5
6 -1.28 2.51 78337 1.b4c3 d7e6 2.h4h5 e8e7 3.e4 a8g8
! 6 -0.20 4.99 215372 1.b4e7 c7d8 2.e7f6 d8xf6 3.e5xf6 e8e6
4.f6xg7 h8g8
! -->6 -0.20 5.53 246490 1.b4e7 c7d8 2.e7f6 d8xf6 3.e5xf6 e8e6
4.f6xg7 h8g8
7 -0.04 6.47 300077 1.b4e7 c7d8 2.e7f6 d8xf6 3.e5xf6 e8e6
4.f6xg7 h8g8 5.h4h5
-->7 -0.04 8.34 468539 1.b4e7 c7d8 2.e7f6 d8xf6 3.e5xf6 e8e6
4.f6xg7 h8g8 5.h4h5
! -->8 -0.04 23.20 1390056
! 9 2.70 1:03 3700981 1.b4e7 c7xe5 2.f4xe5 e8xe7 3.h4xe7 d7e6
4.a1f1 a8g8 5.g3f3 a6a5 6.f3xf7 e6xf7
7.f1xf7
! -->9 2.70 1:46 6617246 1.b4e7 c7xe5 2.f4xe5 e8xe7 3.h4xe7 d7e6
4.a1f1 a8g8 5.g3f3 a6a5 6.f3xf7 e6xf7
7.f1xf7
! 10 3.19 2:55 10125680 1.b4e7 c7xe5 2.f4xe5 e8xe7 3.h4xe7 d7e6
4.c2g6 a6a5 5.g6xf7 a5c3 6.a1f1 c3xe5
!23/10 7.06 5:44 19658676 1.g3xg7 h8xg7 2.h4f6 g7g8 3.f6xh6 f5
4.e5xf6 e8e7 5.f6xe7 d7f5 6.h6g5 g8h8
7.c2xf5
!-->10 7.06 6:05 21212548 1.g3xg7 h8xg7 2.h4f6 g7g8 3.f6xh6 f5
4.e5xf6 e8e7 5.f6xe7 d7f5 6.h6g5 g8h8
7.c2xf5
Best wishes,
Steffen.
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