Discussion of anything and everything relating to chess playing software and machines.
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PauloSoare
Posts: 1335Joined: Thu Mar 09, 2006 5:30 amLocation: Cabo Frio, Brasil
Post by PauloSoare Tue Apr 17, 2007 7:02 am
Marc MP wrote: PauloSoare wrote: Terry, yesterday I saw that this position was analised by me(with computer help),
Howard Exner, Uri and others in 1999 or 2000. We concluded that black wins.
I look for the posts, but I didn´t found.
Interesting is that when Marc Moisan post the position, I didn´t found the queen
sacrifice, I become an old man.
Paulo Soares
Black wins?? Really Paulo? Did you meant White wins?
Oh, my God
Marc, now I am rigth, I am an old man.
Paulo Soares
JuLieN
Posts: 2949Joined: Mon May 05, 2008 12:16 pmLocation: Bordeaux (France)Full name: Julien Marcel
Post by JuLieN Wed May 02, 2012 2:13 pm
Just bumping this thread because five years ago it was still uncertain what the outcome of Marc's "solution" would be:
gleperlier
Posts: 1033Joined: Sat Feb 04, 2012 10:03 pm
Post by gleperlier Wed May 02, 2012 4:39 pm
Fritz 13 Let's Check feature says :
Uploaded with
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[D]4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 0 1
Analysis by Vitruvius version 1.12b:
1. = (0.00): 1.Qa3 Rxe6 2.Qxa7 Qf7 3.Qb8+ Qe8 4.Qb7 Qf7 5.Qd5 Qe7 6.Qa8+ Qe8 7.Qb7
2. = (-0.19): 1.Qd4 Rxe6 2.Rf1 Kf7 3.Bd1 Qb5 4.Bb3 Rhe8 5.Rf2 Qc5 6.h3 Ke7 7.Bxe6 Kxe6 8.Kg2 Rg8 9.Qd5+ Qxd5 10.exd5+ Ke7 11.Bf4 Nd3 12.Re2+ Kd7 13.Bg3 Re8 14.Rxe8 Kxe8 15.b4 Kd7 16.Kf3 Nb2 17.Ke3 Nc4+ 18.Kd4 b5 19.Kc5
(Gab, 02.05.2012)
gladius
Posts: 568Joined: Tue Dec 12, 2006 10:10 amFull name: Gary Linscott
Post by gladius Wed May 02, 2012 5:40 pm
JuLieN wrote: Just bumping this thread because five years ago it was still uncertain what the outcome of Marc's "solution" would be:
This is a fascinating position!
After 1. Qxe5 fxe5 2. Rf1 there are a few moves suggested by programs. I'm not sure, but it looks like a6 and Qe7 may be draws.
2. ... a6 (3. Bd1 Rc4 4. Bb3 - now what?)
2. ... Qe7 (3. Bd1 Rc4 4. Bb3 - now what?)
2. ... Rc7 (3. Bb3 Re7[] 4. Bd5 a5 5. a4 (7.60)
2. ... Rc8 (3. Bd1 Qxe6 4. Bb3 Qxb3 5. axb3 a5 (1.60)
gleperlier
Posts: 1033Joined: Sat Feb 04, 2012 10:03 pm
Post by gleperlier Wed May 02, 2012 8:03 pm
Uploaded with
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[D]4q1kr/p6p/1pr1P1pB/4p3/4P3/2P5/PP2B2P/5RK1 b - - 0 1
Analysis by Vitruvius version 1.12b:
2...Rc7 3.Bb5 Qd8 4.Bd7 Qe7 5.Ba4 Qc5+ 6.Kg2 Rg7 7.Bb3 Qe7 8.h4 b5 9.Bg5 a5 10.Bd5 h5 11.Bxe7 Rxe7 12.a4 bxa4 13.Ra1 Kg7 14.Rxa4 Rb8 15.b3 Ra7 16.Ra2 Rc8 17.c4 Kf8 18.Rf2+ Ke8 19.Rf6 Rg7 20.e7 Rc7 21.Kg3 Kxe7 22.Ra6 g5 23.Rxa5 gxh4+ 24.Kxh4
= (-0.14) Profondeur: 28 00:21:42 2627mN
2. = (0.00): 2...Rc8 3.Bd1 b5 4.Bb3 Rc4 5.Rf2 Qe7 6.Rf1 Qc5+ 7.Kg2 Qe7 8.Rf2 Qe8 9.Kg1
3. = (0.00): 2...Rc5 3.Bd1 b5 4.Bb3 Rc4 5.Rf2 Qe7 6.Rf1 Qc5+ 7.Kg2 Qe7 8.Rf2 Qe8 9.Kg1
(Gab, 02.05.2012)
Paloma
Posts: 1167Joined: Thu Dec 25, 2008 9:07 pmFull name: Herbert L
Post by Paloma Wed May 02, 2012 10:08 pm
kgburcham
Posts: 2016Joined: Sun Feb 17, 2008 4:19 pm
Post by kgburcham Thu May 03, 2012 1:15 am
M16
gleperlier
Posts: 1033Joined: Sat Feb 04, 2012 10:03 pm
Post by gleperlier Thu May 03, 2012 12:52 pm
kgburcham wrote: M16
[D]6kr/7p/4P1pB/p3p3/2P1P3/q1P5/P5KP/5R2 w - - 0 1
Analysis by Critter 1.4a 64-bit SSE4:
1.Rf7 Qb2+ 2.Kf3 Qxc3+ 3.Kg4 Qa3 4.Rc7 Qf8 5.Bxf8 Kxf8 6.Rc8+ Ke7 7.Rxh8 Kxe6 8.Rxh7 Kd6 9.Ra7 a4 10.Rxa4 Kc5 11.Ra5+ Kb4 12.Rxe5 g5 13.c5 Kb5 14.Rxg5 Kc6 15.h4 Kb5 16.h5 Ka5 17.h6 Kb4 18.h7 Kc4 19.h8Q Kd3 20.c6 Kxe4 21.c7 Kd3 22.Qh3+ Kc2 23.Rd5 Kc1 24.Qa3+ Kc2 25.Qb3+ Kc1 26.c8Q#
+- (#26) Profondeur: 27/71 00:03:42 1916mN, tb=447719
(Gab, 03.05.2012)
JuLieN
Posts: 2949Joined: Mon May 05, 2008 12:16 pmLocation: Bordeaux (France)Full name: Julien Marcel
Post by JuLieN Thu May 03, 2012 1:31 pm
So was Marc's "solution" correct after all? Is Qxe5 the best move?
gleperlier
Posts: 1033Joined: Sat Feb 04, 2012 10:03 pm
Post by gleperlier Thu May 03, 2012 2:01 pm
Seems Mark's solution leads to a draw like Qa3 or Qd4. But Qxe5 is more sexy
