K.
Sasikiran (2675) - L. Nisipeanu (2696)
Q+P Endgame analysis, 2006.
[A.J.G.]
(This position was not actually reached in the game, it arises from
my analysis of the K+P endgame of that encounter.)
56...Qd5;
57.b7 Qa2+;
58.Kb6,
This runs counter to chess logic, one would think that the White King has to "hide from the checks," the correct square for this is seemingly the b8-square.
However, after some thought and tinkering with the position, it becomes obvious that the White King cannot hide on b8, as this obstructs the promotion of the White QNP.
[ The move of:
</= 58.Kb8?; actually adds 10-15 moves to the winning procedure. ] 58...Qb1+;
59.Ka6 Qa2+;
60.Kb5 Qd5+; 61.Kb6 Qd8+;
Naturally Black continues with the checks, meanwhile the White King is meandering about the chess board in a manner that would make one think that the first party has no plan ... or even a clue as what he or she should be doing in order to try and win this position. 62.Qc7 Qf6+;
63.Qc6 Qd4+;
64.Ka5 Qa1+; 65.Qa4 Qc3+;
66.Qb4,
Now the White Queen not only blocks the checks, but also is in a strong position and threatens to enforce the promotion of the White foot-soldier on b7.
[
66.Kb6!?, is an offer to repeat.
] 66...Qa1+;
67.Kb5 Qe5+;
68.Kc4, (Maybe - '!!')
"Hey RON!!! You are goin the wrong way!" (And so it would seem, at least to the most casual observer.)
[ 68.Ka6!? ] 68...Qb8;
(blocking the Pawn)
I have done a detailed analysis (and study) of this position. After just a few minutes, one will quickly discover that Black, if he is not careful ...
will run out of checks!
[
</= 68...Qe4+?!;
69.Kc3! Qd3+; 70.Kb2, "+/-" ] 69.Kb3!,
Once more, the White King seems to be headed in the wrong direction.
[ Many strong programs choose the move: 69.Qe7+!?,
(for White) in this position. ] 69...Kf3;
Black must exercise a degree of caution in the current situation.
[ Of course not: </=
69...Qg8+?;
70.Qc4+,
and the Queens come off the chess board,
leaving the Black King too far away to deal with the infantry unit on b7.
] 70.Ka3! Ke2;
71.Ka2! Ke3;
72.Kb1!,
The most precise ... now the Black Queen has no checks ... especially note that the second party has been denied the use of h2 (with check).
[ 72.Qc3+!? ] 72...Kd3!;
73.Qe7 Kc3;
It no longer matters where the second player moves.
[ After
73...Qh8; 74.Qd6+,
it is apparent that Black cannot
prevent White from promoting the QNP. (And winning.)
] 74.Qc5+ Kd2;
75.Qc1+ Kd3;
The Black King is forced back to d3 so that the Black Queen is prevented from using the b1-h7 diagonal for
harassing the White King. 76.Qc8 Qa7;
77.b8Q Qg1+;
78.Qc1 Qxc1+;
Apparently, this is forced ... ... ... other moves lose even more quickly.
[
Even worse would be: </= 78...Qg6!?;
Probably inferior.
79.Qc2+ Kd4;
80.Qxg6, "+/-" and mate in just a few moves.
**********************************************************************
Or 78...Qf2!?;
79.Qd6+ Ke4;
80.Qcc6+ Ke3; 81.Qc3+,
81...Ke2;
82.Qdd3#. ] 79.Kxc1,
"+/-" ... with an easy win for White.
(The box says that it is a mate in less than ten moves from here.)
Copyright (c) A.J. Goldsby, 2006. All rights reserved.
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