Author: Joachim Rang
Date: 01:23:51 10/20/02
Go up one level in this thread
On October 20, 2002 at 03:48:58, Ernst Walet wrote:
>On October 19, 2002 at 16:51:05, Jonas Cohonas wrote:
>
>>I found this wonderful position in Peter Durfeld's "Skakmyter" (Chessmyths)
>>And the story is losely translated by me.
>>
>>The story behind it is equally wonderful:
>>
>>In this position:
>>
>>[D] 8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1
>>
>>White chose to resign as he is behind with a knight and a few pawns, and
>>promoting the d pawn results in a simple knight fork on f7...
>>
>>With this position starts the story of a young Georgian pessant who, while
>>visiting the Zar capital had been a spectator to this game. The end position had
>>made a great impression on him, the young chess enthusiast had instinctively
>>sensed that white was not lost! He then wrote down the position and went home to
>>his farm in the south of Russia.
>>
>>In the following days and weeks he increasingly became more and more fascinated
>>with this position, until it became an obsession for him to figure out how white
>>could save this game and maybe even win!
>>
>>He would frequently setup the position while working the fields and wherever he
>>went and the weeks turned into months and the months turned into years.
>>
>>It would take more than 30 years before one day he ran off his field screaming,
>>iv'e got it! white can win this game!
>>
>>He then sent his lifes analysis of this game to the then famous chess magazine
>>"64" who's editor in 1963-69 was Tigran Petrosjan, but Petrosjan for unknown
>>reasons never recieved the letter and the letter remained unopened until 1984
>>when Karpov was editor, however the one to open the letter was no less than Tal
>>who upon reading the letter was moved and excited by this complex solution, that
>>turned out to be a forced mate in 14!
>>
>>They went out to his farm to congratulate him and shower him with some sybolic
>>gifts for his remarkable analysis and dedication, but as it turned out the
>>pessant had died 2 days prior...
>>
>>As far as i know this is a real life story and the solution i will provide
>>tomorrow, it is truely spectacular, try and see if your program can solve it
>>overnight, but don't get fooled by the eval, DF7 when fed the moves had as high
>>as -11.20 before realizing it was lost for black! heck try and see if your prog
>>can even find the first move :)
>>
>>Regards
>>Jonas
>
>
>This is what Hiarcs8 produced after an overnight analysis:
>
>New game
>8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1
>
>Analysis by Hiarcs 8:
>
>1.Bc2+ Kg7 2.Nxe3 Nf7+ 3.Ke7
> -+ (-2.73) Depth: 1 00:00:00
>1.Bc2+ Kg7
> -+ (-3.77) Depth: 2/10 00:00:00
>1.Bc2+ Kg7
> -+ (-3.77) Depth: 2/10 00:00:00
>1.Nxe3 Ba5 2.Bc2+ Kg7
> -+ (-3.10) Depth: 2/11 00:00:00
>1.Nf6+ Kg6
> -+ (-1.71) Depth: 2/11 00:00:00
>1.Nf6+ Kg6 2.Bc2+ Kxf6 3.d8Q+ Kg7
> ³ (-0.62) Depth: 2/11 00:00:00
>1.Nf6+ Kg6 2.Bc2+ Kxf6 3.d8Q+ Kg7
> ³ (-0.62) Depth: 3/14 00:00:00
>1.Nf6+ Kg7 2.Nh5+ Kg6 3.Bc2+ Kxh5 4.Bd1+ Kg6 5.Bc2+ Kg7 6.d8Q
> µ (-0.77) Depth: 4/16 00:00:00
>1.Nf6+ Kg7
> ³ (-0.51) Depth: 5/20 00:00:00 12kN
>1.Nf6+ Kg7 2.Nh5+ Kg6 3.Nf4+
> ³ (-0.27) Depth: 5/20 00:00:00 16kN
>1.Nf6+ Kg7
> = (-0.02) Depth: 6/23 00:00:00 31kN
>1.Nf6+ Kg7 2.Nh5+ Kg6 3.Nf4+
> = (0.00) Depth: 6/23 00:00:00 45kN
>1.Nf6+ Kg7
> = (-0.25) Depth: 7/23 00:00:00 94kN
>1.Nf6+ Kg7 2.Nh5+ Kg6 3.Nf4+ Kf5 4.Ng2 Ne4+ 5.Kc6 Ba5 6.Nxe3+ Ke5
> -+ (-4.34) Depth: 7/29 00:00:01 236kN
>1.Nxe3 Ba5 2.Be2 Nb8 3.Bd3+ Kg8 4.Nc4 Bd8
> -+ (-2.97) Depth: 7/29 00:00:02 342kN
>1.Nxe3 Ba5 2.Be2 Nb8 3.Bd3+ Kg8 4.Ke7 Nc6+ 5.Kd6 Nd8 6.Kxc5
> -+ (-2.98) Depth: 8/29 00:00:04 778kN
>1.Nxe3 Ba5 2.Be2 Nb8 3.Bd3+ Kg8 4.Bf5 Kf7 5.Kxc5 Ke7 6.Nc4
> -+ (-3.02) Depth: 9/29 00:00:08 1423kN
>1.Nxe3 Ba5 2.Be2 Nb8 3.Bd3+ Kg7 4.Nf5+ Kg6 5.Ne3+ Kf7 6.Nf5 h5
> -+ (-3.02) Depth: 10/29 00:00:19 3339kN
>1.Nxe3 Ba5 2.Be2 Nb8 3.Bd3+ Kg7 4.Nf5+ Kg6 5.Ne3+ Kf7 6.Nc4 Bd8 7.Ne5+ Kf6
>8.Ng4+ Kg7
> -+ (-3.13) Depth: 11/30 00:00:46 8237kN
>1.Kc6 Ne6 2.Nxe3 Nb8+ 3.Kd6 Nd8 4.Ba4 Ba5 5.Kxc5 Kg6 6.Bb5 Kf6
> -+ (-2.97) Depth: 11/32 00:01:20 14141kN
>1.Kc6 Ne6
> -+ (-2.72) Depth: 12/33 00:01:58 20333kN, tb=3
>1.Kc6 Ne6 2.Nxe3 Nb8+ 3.Kd6 Nd8 4.Ba4 Ba5 5.Kxc5 Kg6 6.Kc4 Ndc6 7.Nd5 Ne5+ 8.Kb5
> -+ (-2.62) Depth: 12/33 00:02:04 21450kN, tb=3
>1.Kc6 Ne6 2.Nxe3 Nb8+ 3.Kd6 Nd8 4.Bf3 Na6 5.Be2 Nb8 6.Bb5 Ba5 7.Kxc5 Kg6 8.Nc2
> -+ (-2.63) Depth: 13/37 00:04:22 45676kN, tb=12
>1.Kc6 Ne6 2.Nxe3 Nb8+ 3.Kd6 Nd8 4.Bf3 Na6 5.Be2 c4+ 6.Kd5 Ba5 7.Kxc4 Nb8 8.Bg4
>Kg6
> -+ (-2.60) Depth: 14/41 00:09:46 101762kN, tb=195
>1.d8Q Nf7+ 2.Ke7 Nxd8 3.Kxd8 Ba5+ 4.Kd7 Bc7 5.Nxe3 Bxg3 6.Nd5 Be5 7.Kc6 Kg6
>8.Bc2+ Kg5 9.Kb5 Nb4 10.Nxb4
> -+ (-2.59) Depth: 14/42 00:20:52 214470kN, tb=1238
>1.d8Q Nf7+ 2.Ke7 Nxd8 3.Kxd8 Ba5+ 4.Kd7 Bc7 5.Nxe3 Bxg3 6.Bc2+ Kh8 7.Nd5 Nb4
>8.Nxb4 cxb4 9.Ke6 Kg7 10.Kf5 h5
> -+ (-2.52) Depth: 15/42 00:25:36 259117kN, tb=4086
>1.d8Q Nf7+ 2.Ke7 Nxd8 3.Kxd8 Ba5+ 4.Kd7 Bc7 5.Nxe3 Bxg3 6.Nd5 Be5 7.Kc6 Bd4
>8.Kb5 Nb8 9.Kc4 h5 10.Bf3 h4 11.Nxc3 Bxc3 12.Kxc3
> -+ (-2.52) Depth: 16/46 00:57:12 580307kN, tb=15373
>1.Nf6+ Kg7
> -+ (-2.27) Depth: 16/47 01:22:08 834815kN, tb=19955
>1.Nf6+ Kg7 2.Nh5+ Kg6 3.Bc2+ Kxh5 4.d8Q Kg4 5.Kc6 Nf3 6.Qg8+ Kh3 7.Qe6+ Kg2
>8.Qxe3 Nd4+ 9.Kb7 Nxc2 10.Qe2+ Kxg3 11.Qxc2
> ± (1.30) Depth: 16/49 06:32:01 4294836396kN, tb=82936
>
>(Celeron 1.2GHz, 512MB hash, 3, 4 and 5 piece EGTB's 20.10.2002)
>
>
>It's busy at 17 ply now, and I'll try to complete this depth.
>
>Ernst.
Hiarcs is great here!
With your post I figured out the solution. The beautiest line is:
1. Nf6+ Kg7 2. Nh5+ Kg6 3. Bc2+ Kxh5 4. d8=Q Nf7+ 5. Ke6 Nxd8+ 6. Kf5 e2 7.
Be4 e1=N 8. Bd5 c2 9. Bc4 c1=N 10. Bb5 Nc6 11. Bxc6 Nc7 12. Ba4 Ne2 13. Bd1
Nf3 14. Bxe2 c4 15. Bxf3# {Matt} 1-0
to prevent this mate, black has to avoid 4... nf7+ which looses (obviously) too.
Ruffian did not find it until depth 21 (9 hours on my Duron 735 Mhz)
regards
P.S.: But this is a composition, isn't it?
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