Bobby Fischer outrageous chess moves,position 2....

[Dr.Wael Deeb]

....by Bruce Pandolfini


Position 2:
Bobby Fischer-William Addison
Cleveland 1971
White's 29th move....


[d]4n3/pp5p/6k1/2P2pp1/5p2/2B2P2/PPK3PP/8 w - - 0 1


Sloution:29.Be5!
Fischer is corraling the knight so it'can't move without being captured....
If 29....Ng7 or 29....Nf6,white will capture the knight and achieves a winning
king and pawn endgame taking into consideration white's queen side pawn majority....

[Dr.Wael Deeb]

I assume that this one is pretty easy too,but wait as the positions get harder and harder....

[Terry McCracken]

I assume that this one is pretty easy too,but wait as the positions get harder and harder....

So far my wetware has easily found 2 for 2. I await tougher problems. Somewhat nervously.

However, I'm not the player I use to be, so I doubt I'll get all 101.
Fischer was brilliant.

I hope I do well though.

[Marc MP]

I assume that this one is pretty easy too,but wait as the positions get harder and harder....

Pretty easy for a human for sure... do you know any engine that solves this quickly? Intending 2. Bxf6 on 1. Be5 Nf6?

edit: Be5 looks natural, but white might also be winning after 1. Kd3 (maybe others moves wins too). Frenzee and Glaurung like 1. Kd3, Crafty 1. Bd4.

[Dr.Wael Deeb]

I assume that this one is pretty easy too,but wait as the positions get harder and harder....

So far my wetware has easily found 2 for 2. I await tougher problems. Somewhat nervously.

However, I'm not the player I use to be, so I doubt I'll get all 101.
Fischer was brilliant.

I hope I do well though.

I am glad that you're interested Terry,yes,the positions get tougher as we go ahead,we'll see if your wetware still up to date....

[Dr.Wael Deeb]

I assume that this one is pretty easy too,but wait as the positions get harder and harder....

Pretty easy for a human for sure... do you know any engine that solves this quickly? Intending 2. Bxf6 on 1. Be5 Nf6?

edit: Be5 looks natural, but white might also be winning after 1. Kd3 (maybe others moves wins too). Frenzee and Glaurung like 1. Kd3, Crafty 1. Bd4.

1.Kd3 and 1.Bd4 can still win,but it will take a longer time for white to achieve the victory....

[bob]

....by Bruce Pandolfini


Position 2:
Bobby Fischer-William Addison
Cleveland 1971
White's 29th move....


[d]4n3/pp5p/6k1/2P2pp1/5p2/2B2P2/PPK3PP/8 w - - 0 1


Sloution:29.Be5!
Fischer is corraling the knight so it'can't move without being captured....
If 29....Ng7 or 29....Nf6,white will capture the knight and achieves a winning
king and pawn endgame taking into consideration white's queen side pawn majority....

I have this one running but I am not sure current Crafty will find it. Parts of the evaluation are locked out, and pawn majority evaluation is one of those parts. So unless it can see actually making a passer that is a "distant passer" it probably will not find this at present.

[Dr.Wael Deeb]

....by Bruce Pandolfini


Position 2:
Bobby Fischer-William Addison
Cleveland 1971
White's 29th move....


[d]4n3/pp5p/6k1/2P2pp1/5p2/2B2P2/PPK3PP/8 w - - 0 1


Sloution:29.Be5!
Fischer is corraling the knight so it'can't move without being captured....
If 29....Ng7 or 29....Nf6,white will capture the knight and achieves a winning
king and pawn endgame taking into consideration white's queen side pawn majority....

I have this one running but I am not sure current Crafty will find it. Parts of the evaluation are locked out, and pawn majority evaluation is one of those parts. So unless it can see actually making a passer that is a "distant passer" it probably will not find this at present.

Hi Bob,
To tell you the truth,I thought Crafty was one of the first engines that could solve this position quickly,I'll run it as a MP engine to see if it can find the correct move....

[kgburcham]

[d] 4n3/pp5p/6k1/2P2pp1/5p2/2B2P2/PPK3PP/8 w - -

Zappa Mexico II
Hash 1024

19/55 0:47 +1.84 1.Kd3 Kf7 2.Be5 a5 3.Kd4 Ke6 4.b3 h5 5.a3 g4 6.b4 axb4 7.axb4 gxf3 8.gxf3 Nf6 9.b5 h4 10.Bxf4 Nd7 (109.912.397) 2304
19/55 0:57 +1.84 1.Kd3 Kf7 2.Be5 a5 3.Kd4 Ke6 4.b3 h5 5.a3 g4 6.b4 axb4 7.axb4 gxf3 8.gxf3 (131.296.793) 2302
20/59 1:28 +1.99 1.Kd3 Kf7 2.Be5 a5 3.Kd4 Ke6 4.b3 h5 5.a3 g4 6.Bxf4 Nf6 7.Bd2 Nd5 8.Bxa5 Nf4 9.fxg4 fxg4 (207.335.959) 2350
20/59 1:36 +1.99 1.Kd3 Kf7 2.Be5 a5 3.Kd4 Ke6 4.b3 h5 5.a3 g4 6.Bxf4 Nf6 7.Bd2 Nd5 8.Bxa5 Nf4 9.fxg4 fxg4 (227.095.264) 2360
21/61 4:58 +2.59 1.Kd3 Kf7 2.Be5 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 Nf6+ 7.Bxf6+ Kxf6 8.h3 Ke7 9.c6 Kf6 10.cxb7 Ke7 11.b8Q Kd7 (690.373.105) 2311
21/61 5:02 +2.59 1.Kd3 Kf7 2.Be5 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 Nf6+ 7.Bxf6+ Kxf6 8.h3 Ke7 9.c6 Kf6 10.cxb7 Ke7 11.b8Q Kd7 (698.743.262) 2309
22/63 11:46 +2.73 1.Kd3 Nc7 2.Kc4 Kf7 3.Be5 Ne6 4.b4 a6 5.a4 Nd8 6.b5 axb5+ 7.axb5 Ke6 8.Bc7 Nc6 9.bxc6 bxc6 10.Kd4 h6 11.h4 gxh4 12.Bxf4 h5 13.Bg5 (1.629.277.648) 2304
22/63 18:29 +2.97 1.Be5 Kf7 2.Kd3 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 g4 7.h3 gxh3 8.gxh3 Kf7 9.c6 bxc6+ 10.Kxc6 Ke6 11.Bxf4 Nf6 12.Bc7 Nd5 13.Bxa5 (2.599.919.427) 2343
22/63 18:35 +2.97 1.Be5 Kf7 2.Kd3 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 g4 7.h3 gxh3 8.gxh3 Kf7 9.c6 bxc6+ 10.Kxc6 Ke6 11.Bxf4 Nf6 12.Bc7 Nd5 13.Bxa5 (2.613.721.409) 2342
23/65 20:03 +2.97 1.Be5 Kf7 2.Kd3 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 g4 7.h3 gxh3 8.gxh3 Kf7 9.c6 bxc6+ 10.Kxc6 Ke6 11.Bxf4 Nf6 12.Bc7 Nd5 13.Bxa5 (2.833.013.381) 2354
23/65 20:20 +2.97 1.Be5 Kf7 2.Kd3 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 g4 7.h3 gxh3 8.gxh3 Kf7 9.c6 bxc6+ 10.Kxc6 Ke6 11.Bxf4 Nf6 12.Bc7 Nd5 13.Bxa5 (2.874.038.697) 2354

[Dr.Wael Deeb]

[d] 4n3/pp5p/6k1/2P2pp1/5p2/2B2P2/PPK3PP/8 w - -

Zappa Mexico II
Hash 1024

19/55 0:47 +1.84 1.Kd3 Kf7 2.Be5 a5 3.Kd4 Ke6 4.b3 h5 5.a3 g4 6.b4 axb4 7.axb4 gxf3 8.gxf3 Nf6 9.b5 h4 10.Bxf4 Nd7 (109.912.397) 2304
19/55 0:57 +1.84 1.Kd3 Kf7 2.Be5 a5 3.Kd4 Ke6 4.b3 h5 5.a3 g4 6.b4 axb4 7.axb4 gxf3 8.gxf3 (131.296.793) 2302
20/59 1:28 +1.99 1.Kd3 Kf7 2.Be5 a5 3.Kd4 Ke6 4.b3 h5 5.a3 g4 6.Bxf4 Nf6 7.Bd2 Nd5 8.Bxa5 Nf4 9.fxg4 fxg4 (207.335.959) 2350
20/59 1:36 +1.99 1.Kd3 Kf7 2.Be5 a5 3.Kd4 Ke6 4.b3 h5 5.a3 g4 6.Bxf4 Nf6 7.Bd2 Nd5 8.Bxa5 Nf4 9.fxg4 fxg4 (227.095.264) 2360
21/61 4:58 +2.59 1.Kd3 Kf7 2.Be5 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 Nf6+ 7.Bxf6+ Kxf6 8.h3 Ke7 9.c6 Kf6 10.cxb7 Ke7 11.b8Q Kd7 (690.373.105) 2311
21/61 5:02 +2.59 1.Kd3 Kf7 2.Be5 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 Nf6+ 7.Bxf6+ Kxf6 8.h3 Ke7 9.c6 Kf6 10.cxb7 Ke7 11.b8Q Kd7 (698.743.262) 2309
22/63 11:46 +2.73 1.Kd3 Nc7 2.Kc4 Kf7 3.Be5 Ne6 4.b4 a6 5.a4 Nd8 6.b5 axb5+ 7.axb5 Ke6 8.Bc7 Nc6 9.bxc6 bxc6 10.Kd4 h6 11.h4 gxh4 12.Bxf4 h5 13.Bg5 (1.629.277.648) 2304
22/63 18:29 +2.97 1.Be5 Kf7 2.Kd3 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 g4 7.h3 gxh3 8.gxh3 Kf7 9.c6 bxc6+ 10.Kxc6 Ke6 11.Bxf4 Nf6 12.Bc7 Nd5 13.Bxa5 (2.599.919.427) 2343
22/63 18:35 +2.97 1.Be5 Kf7 2.Kd3 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 g4 7.h3 gxh3 8.gxh3 Kf7 9.c6 bxc6+ 10.Kxc6 Ke6 11.Bxf4 Nf6 12.Bc7 Nd5 13.Bxa5 (2.613.721.409) 2342
23/65 20:03 +2.97 1.Be5 Kf7 2.Kd3 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 g4 7.h3 gxh3 8.gxh3 Kf7 9.c6 bxc6+ 10.Kxc6 Ke6 11.Bxf4 Nf6 12.Bc7 Nd5 13.Bxa5 (2.833.013.381) 2354
23/65 20:20 +2.97 1.Be5 Kf7 2.Kd3 a5 3.b3 h5 4.Kd4 h4 5.Kd5 Ke7 6.a3 g4 7.h3 gxh3 8.gxh3 Kf7 9.c6 bxc6+ 10.Kxc6 Ke6 11.Bxf4 Nf6 12.Bc7 Nd5 13.Bxa5 (2.874.038.697) 2354

So Zappa Mexico took more than 18 minutes to find the solution,the positions are not outdated after all