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World Chess Solving Championship 2000
Round 1 : Solutions
Problem 1: Mate in 2
John Rice, Original for The Problemist
1. Rd8 ? b4!
1.Qd6! [5 points]
Problem 2 : Mate in 2
Lars Larsen & Tony Lewis, Original for The Problemist
1.Nf4? Rf6!
1.Ba3? Bxe6!
1.Bg2! [5 points]
Problem 3 : Mate in 2
Denis Saunders, Original for The Problemist
1.Nxe3! [5 points]
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Round 2: Solutions
Problem 4: Mate
in 3
1. Nf7!
[1 point] threat 2.Nd8
[1] & 3.Nb7#
1.- Bd5
2.b4+ [0.5]
2.- Kc4
3.Nd6#
1.- ..Nf5
2.b4+ [0.5] 2.- Kc4
3.Ne5#
1.- ..Nd5
2.Nd6
[0.5] & 3.Nb7#
Problem
5: Mate in 3
Loe Valve, Suomen Shakki, 1953
1.Rf6!
[1] threat 2.Nc5+
[1]
2.- Ke5
3.Nxg4#
1.- Rxd3
2.Rb8
[1] & 3.Re8#
1.- Bxd3
2.Bxg4
[1] & 3.Re6#
1.- Nf2
2.Nxf2
[1] 2.- Ke5
3.Nhxg4#
Problem
6: Mate in 3
1.Rf6!
[1] threat 2.Ree6
[1]
(3.Nf5#)
2.- Qxe6
3.Nxe6#
1.- Qd7
2.Rfe6
[1] (3.Nf5#)
2.- Qxe6
3.Nxe6#
1.- Qg4
2.Rff5
[1] (3.Ne6#)
2.- Qxf5
3.Nxf5#
1.- Qh3
2.Ref5
[1] (3.Ne6#)
2.- Qxf5
3.Nxf5#
2.- Bxd5
3.Rxd5#
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Round 5: Solutions
Problem 7 :
Mate in 4
N.P. Zelepukhin, 3rd Prize Shakhmatna Misl, 1963
1.Rb7!
[1]
threat 2.Rc7+ Kb4
3.Nd5+
[0.5]
Ka5
4.Rc5#
2.- Kb6
3.Nd5+
[0.5] Ka5
4.Rc5#
1.- Rc1
2.Ne6+ Kc6
3.Nd8+
[1] 3.- Kc5
4.d4#
1.- a3 2.Nxb3 Kc6
3.Na5+
[1] 3.- Kc5
4.d4#
Problem 8 : Mate in 4
Leonid I. Kubbel, Tidskrift for Schack,
1910
1.Qc8!
[1.5] zz
1.- f5 2.Qe6
fxe4 3.Bh4
[0.5]
3.- g5/e3 4.Bg3#
/fxe3#
2.- Kg4
3.Qxg6+
[0.5] 3.- Kh3/Kf4
4.Qg3#
/Qxf5#
1.- Kxe4
2.Qg4+ Kxd5
3.c4+ [0.5] 3.- Ke5
4.Bd6#
2.- Ke5
3.Bd6+
[0.5] 3.- Kxd5
4.c4#
1.- Kg5
2.Qh3 Kf4
3.Qh4+
[0.5] 3.- Ke5
4.Bf6#
1.- Ke5
2.Bd6+ Kxe4
3.Qg4+
[0.5] 3.- Kxd5
4.c4#
2.- Kd4
3.Qe8
[0.5] & 4.Qa4#
Problem 9 : Mate in 5
Ralf Kratschmer, Original for The Problemist
1.Rd2!
[1] threat 2.Bxd5+
1.-
c3 2.Rxa2
(3.Nd8+ Rxd8
4.Ra6#;
3.Ra5
(4.Qb5# /Bxd5#)
3.- Rxa5
4.Bd8#
/Nxa5#;
3.Ra6+ Rxa6 4.Nd8#;
3.Rxa8
& 4.Nd8#
/Na5#
/Ra6#)
2.- Rxa2+
3.Kf3
(4.Nd8#)
3.- Rf2+
4.Kxf2
[2]
& 5.Nd8#
/Na5#
3.- Ra8
4.Bxd5+
[2] 4.- Kxd5
5.Qe4#
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Chess Solving Championship of
Hungary 2000
Round 3: Solutions
Problem 7:
White to play and draw
J. Rusinek, Problemista - 1988
1.c7 Bxc7
2.f8=Q Be5+
3.d4 Bxd4+
4.Ka2! Bd5+ 5.Ka3 Bc5+
6.Nb4 Ra7+
7.Ba4 Bxf8
patt
but no solution 6.- Re3+!
- 7.- Bxf8
black wins - excluded from competition!
Problem 8: White to play and
win
V. Koroljkov & A.Troickij & A.Doluhanov,Shakhmaty USSR -
1937
1.h7 Kg7
2.Rd7+ Kh8
3.Bb2 Ng7
4.Rxg7
a3 5.Bd4
[1 point]
5.- Bc5
6.Be5! Bd6
7.Bf6!
[1]
7.- a2+ 8.Ka1
b2+ 9.Bxb2 Ba3
10.Bc3!
[1]
10.- Bb4
11.Bd4! Bc5
12.Be5! Bd6
13.Bf6! Be5 14.Bxe5!
wins [2]
Problem 9: White to play and win
M. Bent, The Problemist -
1997
1.d8=Q b1=Q
2.Nb4+
[1]
2.- Qxb4
3. Qxc8+ Kb5
4.Nc3+
[2]
4.- Ka5
5.Qa8+ Kb6
6.Qb8+
[2]
6.- Kc5
/ Ka5
7.Qc7#
/ Qa7#
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