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(1) Sokolsky - Ravinsky
USSR, 1938
[Burba,M]
1.a8B
[ 1.a8Q?
Rc2+=
Wild rook.; 1.a8R?
Rc2+=
Wild rook.; 1.a8N?
Rc8
2.Ra6
( 2.Nc7
Rxc7
3.Rb8
Rc2+=
Wild rook.) 2...Rxa8
3.Rxa8=
Stalemate; 1.Rb8
Rc2+=
Wild rook. ( 1...Rc8?
2.Ka3
Zugzwang 2...Rxb8
3.axb8N+-
) 2.Ka3
Ra2+
3.Kb4
Ra4+
4.Kc5
Ra5+
5.Kd6
Ra6+
6.Ke7
Rxa7+
7.Kd8
Rd7+
8.Kc8
Rc7+
9.Kd8
Rd7+
10.Kxe8
Rd8+
11.Kxd8=
Stalemate] 1...Rc8
[ 1...Rh5
2.Be4
Rxh6
3.Ka3
( 3.Rb8
Rxf6
4.Rxe8++-
) 3...Rh5
4.Rb8
Re5
5.Bc6+-
; 1...Rc7
2.Bd5
Bd7
( 2...Rd7
3.Rb8
Rd8
4.Bxf7++-
) 3.Rd6
Be8
( 3...Rc8
4.Bxf7+
Kxf7
5.Rxd7++-
) 4.Bxf7+
Kxf7
5.Rd8+-
; 1...Re5
2.Bf3
( 2.Rd6
Bc6
3.Rd8+
Be8
4.Rd2
Bc6
5.Bb7
Re8
6.Ba6
Bb5
7.Bxb5
Re2=
) 2...Rf5
3.Be4
Re5
4.Bd3
Bb5
5.Bc4+-
White wins by bringing the rook to e7. 5...Re8
( 5...Bc6
6.Bxf7+
Kxf7
7.Rxc6+-
) 6.Bxf7+
Kxf7
7.Rxb5+-
] 2.Be4
[ 2.Bd5
Rd8
3.Bc4
Rc8
4.Rb7
Rd8
5.Re7
Rc8
6.Ka3
Rb8
7.Bd5
Rd8
8.Kb4
Rb8+
9.Ka5
Rd8
10.Kb6
Rc8
11.Kb7
Rd8
12.Kc7
Rd7+
13.Rxd7
Bxd7
14.Bxf7+
Kxf7
15.Kxd7+-
] 2...Bc6
3.Bxc6
[ 3.Bb1
Be4
4.Ba2
Bb1=
Black draws by perpetual check with the wild rook. This was the original drawing technique published by Krabbe in 'Schaakkuriosa' in 1974. However, Cortlever found a flaw in the 'bishop chase draw'. Cortlever's analysis is the main line.] 3...Ra8
4.Ba4
Re8
5.Ka3
Ra8
6.Re6
fxe6
[ 6...Rc8
7.Be8
Ra8+
8.Kb2
Rc8
9.b4+-
White wins by advancing the b-pawn.] 7.Kb4
Kf7
8.Bc6
Rb8+
9.Kc5+-
White wins by Be4 & Bxh7. 1-0
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