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MatPlus.Net Forum General Study of the Year 2007
 
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(1) Posted by Yochanan Afek [Tuesday, Sep 9, 2008 23:08]; edited by Yochanan Afek [08-09-09]

Study of the Year 2007


Selected last week in Yurmala (Latvia) annual congress for chess composition
Please reprint!

Mario Matouš (Czech Republic)
1st Prize, Polášek and Vlasák 50 JT 2007

[[ White:Kf4 Rc2 Bf2 Nd2- Black:Kh2 Qa7 pawns c5 ,d5'>

White wins



.
1.Nf3+ Kh1!
1.Kh3 2.Ng5+ Kg2 3.Bxc5+.
2.Bd4!!
With a mate threat. This spectacular move cannot be replaced by 2.Bxc5? Qa4+ 3.Nd4 Qxd4+! 4.Bxd4 stalemate.
2...Qf7+!
After 2...Qc7+? White’s material advantage decides, for example 3.Ne5
Qc8 (3...Qb8 4.Rb2! Qf8+ 5.Kg3 Qg7+ 6.Ng4 Qc7+ 7.Be5 Qh7 8.Rd2) 4.Kg3 Qg8+
5.Ng4 Qb8+ 6.Kh3 Qb3+ 7.Rc3 Qb1 8.Nf2+ Kg1 9.Ne4+ cxd4 10.Rg3+ Kf1 11.Nd2+.
Bad is 2...Qb8+? 3.Be5 Qf8+ 4.Ke3 Qh6+ 5.Kf2 c4 6.Ra2 Qb6+ 7.Bd4 Qb1 8.Ra1.
3.Ke3!!
3.Kg3? Qg6+ costs the rook.
. 3...cxd4+ 4.Kf2! Qf4
Very bad is: 5.Re2? Qe3+ and other attacking rook moves
lead to a perpetual check: 5.Ra2? Qc1 6.Kg3!? (6.Ra8 Qc2+ 7.Kg3 Qg6+ 8.Kf2 Qc2+)
6...Qc7+ 7.Kf2 Qc1 or 5.Rc8? Qe3+ 6.Kg3 Qh6 7.Kf2 Qe3+ 8.Kg3 Qh6.
5.Rc6!!
Reciprocal zugzwang, as the queen has surprisingly no good squares. Thus a pawn has to move and obstruct the important diagonal b1-h7 in two echo lines:
A) 5...d3 6.Rc8!! Qh6 7.Rb8! wins.
B) 5...Qe3+ 6.Kg3
Another reciprocal zugzwang.
6...d3 7.Ra6! Qc1 8.Ra7! wins.
 
(Read Only)pid=2702
(2) Posted by Zalmen Kornin [Wednesday, Sep 10, 2008 01:24]

(= 4+4 )

 
(Read Only)pid=2704

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MatPlus.Net Forum General Study of the Year 2007