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Subject: Re: Endgame position

Author: Carlos del Cacho

Date: 07:31:38 01/27/01

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On January 27, 2001 at 10:12:39, Enrique Irazoqui wrote:

>On January 27, 2001 at 10:06:23, Tony Werten wrote:
>
>>On January 27, 2001 at 07:42:12, Enrique Irazoqui wrote:
>>
>>>2k5/1pP4p/3p3P/3p1N2/1P3P2/7K/5b2/8 w
>>>
>>>It's a study composed by the Argentinian José Mugnos and published today in El
>>>País. After a few minutes on a P750, Gambit, Deep Fritz and Shredder 5 stick to
>>>Ne7+, which seems to draw. This is the PGN:
>>
>>Still not happy with the endgame of XiniX. ( faster computer might help too, now
>>it's a amd 333 ) Or maybe it's 1.49 score is correct ? :)
>
>Kg2 is supposed to be the winning move. As I said, Deep Fritz, Shredder 5 and
>Gambit don't see it either.
>
>Enrique
>
>>ply:13 score:1,49 time:311s 96 Kn/s 1.Ne7+ Kxc7 2.Nxd5+, Kd7 3.Nf6+, Ke7 4.Nxh7,
>>Bd4 5.Ng5, Bh8 6.Kg4, d5 7.Kf5, b6 8.h7
>>
>>cheers,
>>
>>Tony
>>
>>>
>>>[Event "?"]
>>>[Site "?"]
>>>[Date "1950.??.??"]
>>>[Round "?"]
>>>[White "Mugnos, José"]
>>>[Black "Study"]
>>>[Result "1-0"]
>>>[Annotator "El País, 27-1-2001"]
>>>[SetUp "1"]
>>>[FEN "2k5/1pP4p/3p3P/3p1N2/1P3P2/7K/5b2/8 w - - 0 1"]
>>>[PlyCount "34"]
>>>[EventDate "1950.??.??"]
>>>
>>>1. Kg2 Be1 (1... Ba7 2. Nxd6+ Kxc7 3. Nb5+ Kb6 4. Nxa7 Kxa7 5. f5) (1... Bb6 2.
>>>Ne7+ Kxc7 3. Nxd5+ Kc6 4. Nxb6 Kxb6 5. Kf3 Kc7 6. Ke4 Kd8 7. Kd5 Kd7 8. f5) 2.
>>>Kf1 Bd2 3. Ke2 Bc1 4. Kd1 Bb2 5. Kc2 Ba1 6. Kb1 Bh8 7. Ng7 Kxc7 8. f5 Kd7 9. f6
>>>b5 10. Kc2 Kd8 11. Kd3 Kd7 12. Kd4 Kd8 13. Kxd5 Kd7 14. Kd4 Kd8 15. Ke4 Kd7 16.
>>>Kd5 Kd8 17. Kxd6 Kc8 1-0
>>>
>>>Enrique

Pepito seems to consider Kg2 for a while switching to Ne7 at ply 9.

 1  11  41  8  Cf5xd6 Rc8xc7
 1  22  41  27  Cf5-e7 Rc8xc7
 1  22  41  39  Cf5-e7 Rc8xc7
 2  145  43  114  Rh3-g2  >>
 2  158  43  226  Rh3-g2 Af2-b6
 3  108  44  437  Rh3-g2 Af2-b6  <<
 3  30  44  641  Rh3-g2 Af2-b6 Cf5-e7 Rc8xc7
 4  34  47  1757  Cf5xd6 Rc8xc7 Cd6-e8 Rc7-c6 Ce8-f6 Af2-e3
 4  53  48  2467  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-e3
 4  53  48  2595  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-e3
 5  3  49  3671  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-e3  <<
 5  4  49  3801  Cf5-e7
 6  54  52  4560  Rh3-g2  >>
 6  55  58  12075  Rh3-g2 Af2-e1 Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 b5
 7  68  76  33961  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 d5 Cf6xh7 Af2-e1 Ch7-f6
 7  68  78  36074  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 d5 Cf6xh7 Af2-e1 Ch7-f6
 8  55  103  77483  Rh3-g2 Af2-e1 Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 b5 Cf6xh7
Ae1xb4
 8  55  108  84027  Rh3-g2 Af2-e1 Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 b5 Cf6xh7
Ae1xb4
 9  67  165  182592  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-e3 Rh3-g4 b5 Cf6xh7
Ae3-d2 Ch7-f6
 9  67  168  186891  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-e3 Rh3-g4 b5 Cf6xh7
Ae3-d2 Ch7-f6
10  60  249  319255  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-d8 Cd5-f6 Af2-e3 Rh3-g4 Rd8-e7
Cf6xh7 Ae3xf4 Ch7-g5 Af4-e5
11  73  342  466138  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-e3 Rh3-g3 b5 Cf6xh7
Ae3-d2 Ch7-f6 Ad2-c3 Cf6-e4
12  88  591  834474  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-e3 Rh3-g4 Ae3-d2
Cf6xh7 Ad2xb4 f5 Ab4-d2 Ch7-g5 b5
13  132  1267  1928178  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-d8 Cd5-f6 Af2-e3 Rh3-g4 Ae3-d2
Cf6xh7 Ad2xb4 Ch7-g5 Ab4-c3 h7 Rd8-e7 f5 d5
14  152  2618  4217501  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-e3 Rh3-g4 Ae3-d2
Cf6xh7 Ad2xb4 Ch7-g5 Ab4-c3 h7 Ac3-h8 f5 b5 Cg5-e6
15  102  3316  5178564  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-e3 Rh3-g4 Ae3-d2
Cf6xh7 Ad2xb4 Ch7-g5 Ab4-c3 h7 Ac3-h8 f5 b5 Cg5-e6  <<
15  103  7482  11249205  Cf5-e7
16  111  12144  17926731  Cf5-e7 Rc8xc7 Ce7xd5 Rc7-c6 Cd5-f6 Af2-d4 Cf6xh7
Rc6-b5 Ch7-g5 Rb5xb4 Cg5-f7 Rb4-c5 f5 d5 Cf7-d8 b5 Cd8-e6 Rc5-c4 h7 Ad4-h8

Time spent: 337.57
Depth reached: 16
PV: [161] Cf5-e7
Nodes per second: 102971.23632377
Interior nodes: 16860348
Quiescent nodes: 17899653
First_success: 7279765/8035763  (90.592 ).
BranchingFactor: 3.000
Null-moves: 1333465/1962351  (67.952 ).
Hash hits: 7720104/16860348  (45.789 ).
EGTB hits: 8803/27797  (31.669 ).
Pawn Hash hits: 17867491/17893757  (99.853 ).
Futility cut-offs: 23663928.
IID: 18.
Evals:  17898269.  Lazy:  8705292. (48.638 )
Extensions:   CHK  6005656.  MRL  877756.  RCP  444979.
Voy por el problema 1. Resueltos: 0




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