Author: William Kerr
Date: 15:12:33 04/08/00
Go up one level in this thread
On April 08, 2000 at 11:55:01, tony worsman wrote: >Hi Folks, >Ive been trying to find the solution to this endgame study >for a couple of days now, >A direct mate in 8 apparently, The study is by Helmut KLUG and >Wolfgang BOR from 1976. > > >r7/p1pRpP1n/K3Pp1b/5B1n/4NkP1/2B5/2N1Pp2/1b6 w - - > >Amy favours Bd2+, as do all the programs i've used:- > > >10 2:47 +++ 1. Nxf2 >10 3:45 +5.328 1. Nxf2 Ng5 2. Nd3+ Kg3 3. Na3 Ba2 4. gxh5 Bxe6 5. Bxe6 > Nxe6 6. Rxe7 >10 4:03 +++ 1. Bd2+ >10 5:50 +5.336 1. Bd2+ Ke5 2. Rd3 f1=Q 3. Bc3+ Kf4 4. e3+ Kf3 5. Nd2+ > Kg3 6. Nxf1+ Kg2 7. Be1 >10 8:01 +5.336 1. Bd2+ Ke5 2. Rd3 f1=Q 3. Bc3+ Kf4 4. e3+ Kf3 5. Nd2+ > Kg3 6. Nxf1+ Kg2 7. Be1 >11 9:23 +++ 1. Bd2+ >11 15:46 +6.032 1. Bd2+ Ke5 2. Nxf2 Bxc2 3. Bc3+ Kf4 4. Bxc2 Ng3 5. Bxh7 > Ke3 6. Bd2+ Kxf2 >11 22:21 +6.032 1. Bd2+ Ke5 2. Nxf2 Bxc2 3. Bc3+ Kf4 4. Bxc2 Ng3 5. Bxh7 > Ke3 6. Bd2+ Kxf2 >12 40:08 +6.160 1. Bd2+ Ke5 2. Nxf2 Bxc2 3. Bc3+ Kf4 4. Bxc2 Ng7 5. Bxh7 > Nxe6 6. Bd2+ Kg3 7. Ne4+ Kxg4 >12 61:07 +6.160 1. Bd2+ Ke5 2. Nxf2 Bxc2 3. Bc3+ Kf4 4. Bxc2 Ng7 5. Bxh7 > Nxe6 6. Bd2+ Kg3 7. Ne4+ Kxg4 >Nodes = 251089260, QPerc: 53 %, time = 10800 secs, 23.2 kN/s >Extensions: Check: 43061050 DblChk: 476724 DiscChk: 3367359 SingReply: >3235142 > Recapture: 1904421 Passed Pawn: 114340 Zugzwang: 0 >Hashing: Trans: 4704498/116504568 = 4 % Pawn: 95869890/96020430 = 10 % > Eval: 38272659/134293089 = -3 % >EGTB Hits/Probes = 0/0 >Hashtable 1: entries = 524288, use = 492978 > > >And here is the end of SOS's debug file after 20 hours on the job, yet no mate. >Using a P1-200MMX. > > >71920040 <first : 15 1022 7181475 3121836329 Bd2+ Ke5 Ba5 Rc8 f8Q f1Q Bc3+ >Kf4 Qxh6+ Ng5 Nxg5 fxg5 gxh5 Kg3 Qxg5+ Kh2 Kxa7 (44 knps) >72234160 <first : 15 1023 7212892 3134278845 Bd2+ Ke5 Ba5 Rc8 f8Q f1Q Bc3+ >Kf4 Qxh6+ Ng5 Nxg5 fxg5 gxh5 Kg3 Qxg5+ Kh2 Kxa7 (44 knps) >72541690 <first : 15 1024 7243645 3146138431 Bd2+ Ke5 Ba5 Rc8 f8Q f1Q Bc3+ >Kf4 Qxh6+ Ng5 Nxg5 fxg5 gxh5 Kg3 Qxg5+ Kh2 Kxa7 (44 knps) >72856630 <first : 15 1025 7275139 3158368629 Bd2+ Ke5 Ba5 Rc8 f8Q f1Q Bc3+ >Kf4 Qxh6+ Ng5 Nxg5 fxg5 gxh5 Kg3 Qxg5+ Kh2 Kxa7 (44 knps) >72906450 >first : exit >72906510 >first : force >72906560 <first : Stopped by user input >72906560 <first : PV: (1025) c3d2 f4e5 d2a5 a8c8 f7f8q f2f1q a5c3 e5f4 f8h6 >h7g5 e4g5 f6g5 g4h5 f4g3 h6g5 g3h2 a6a7 >72906620 <first : time used: 20:13:21 > >I would be interested if anyone can find a mate in 8 here > >Regards and Happy Hunting :o) > >Tony Worsman Chessmaster 6000 finds the mate in 8 in 1 min 7 seconds. c3d2 f4e5 d2a5 a8c8 f7f8 h7f8 a5c3 e5f4 d7d5 f2f1 d5d3 f1e3 d3e3 b1c2 e3f3 Bill
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.