Author: John Merlino
Date: 10:32:36 06/26/03
Go up one level in this thread
On June 26, 2003 at 11:18:26, Igor Gorelikov wrote: >One Test position >================== > >There is a section of everyday's puzzles on my site: >http://www.digichess.gr/infiniteloop/home.php > >All puzzles are taken from engine to engine games of Infinite Loop. > >Prior to publish a puzzle on my site I always offer Crafty 19.3 to solve it. > >I was amazed that today's puzzle was hard to solve even for Crafty so it >can be a good test position for any chess engine. > >What Phalanx XXII (engine number 10 among free WB engines) plays here as >white (and find it at once)? > >[D] r1bq3r/ppp3pp/3k4/3p4/3nP1Q1/8/PP4PP/RN3RK1 w - - 0 17 > >PS: Yace can find it after some time too. > >Best regards, >Igor Gorelikov On a moderately busy (since I'm at work) and humble P3-750, it takes Chessmaster 9000 (default personality) almost six minutes to produce a score > 1.0, even though The King chooses e5+ instantly. So, on today's top hardware, it will definitely produce a +1 score in under two minutes: Time Depth Score Positions Moves 0:00 1/3 0.64 3599 17.e5+ Kxe5 18.Qxg7+ Kd6 19.Qxd4 Rf8 0:00 1/4 1.21 10186 17.e5+ Kxe5 18.Qxg7+ Ke6 19.Qxd4 Rf8 20.Nc3 Rxf1+ 21.Rxf1 0:00 1/5 0.89 37549 17.e5+ Kxe5 18.Qxg7+ Kd6 19.Qxd4 c5 20.Qf4+ Kc6 21.Nc3 0:01 1/6 0.83 117405 17.e5+ Kxe5 18.Qxg7+ Kd6 19.Qxd4 Rf8 20.Nc3 Rxf1+ 21.Rxf1 Be6 0:03 1/7 0.77 381074 17.e5+ Kxe5 18.Qf4+ Ke6 19.Qxd4 Rf8 20.Nc3 Rf6 21.Rae1+ Kf7 22.Nxd5 Rxf1+ 23.Kxf1 0:13 1/8 0.92 1320923 17.e5+ Kxe5 18.Qxg7+ Kd6 19.Qxd4 c5 20.Qf4+ Kc6 21.Nc3 b5 22.Qf7 Qd6 0:34 1/9 0.84 3591060 17.e5+ Kxe5 18.Qxg7+ Kd6 19.Qxd4 Be6 20.Nc3 Kd7 21.Rae1 c6 22.Qg7+ Qe7 1:41 1/10 0.94 10629633 17.e5+ Kxe5 18.Qxg7+ Kd6 19.Qxd4 Be6 20.Nc3 Kd7 21.Rae1 Rf8 22.Rxf8 Qxf8 23.Nxd5 Bxd5 24.Qxd5+ Kc8 5:49 2/11 1.15 34058081 17.e5+ Kxe5 18.Qxg7+ Kd6 19.Qxd4 Be6 20.Nc3 Kd7 21.Rae1 Qg8 22.Ne4 Kc8 23.Nd6+ cxd6 24.Rxe6 jm
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