Nº13 Gennady Matjushin

Draw

Section B.2.

Gennady Matjushin (Ukaine)

wKb8,Bf1,Pa3,b4,f3/bKg6,Bd5,Pa7,b5,c6,f7

1.Be2!
try : 1.Kxa7? unprofitable exchange 1…Bxf3 2.Kb6 Kf5 3.Ka5 (3.Kc5 Ke5 4.Bd3 f5 /Be4–+) 3…Ke4 4.a4 bxa4 5.Kxa4 f5 6.b5 cxb5+ 7.Bxb5 f4 8.Bf1 Bd1+ 9.Kb4 f3–+
try : 1.Bd3+? Kg5 2.Bc2 Bxf3 3.Kxa7 f5 4.a4 Be4! gain a tempo 5.Bd1 (5.axb5 cxb5!–+) 5…bxa4 6.Bxa4 f4–+ 7.Bd1 Bd3! 8.Kb6 Bb5 9.Kc5 Kh4 10.Kd4 Kg3 11.Ke4 Bc4 12.Bh5 Bd5+ 13.Kd4 Bb3 14.Ke4 Bc2+ 15.Kd4 f3 16.Kc5 f2 17.Be2 Ba4–+

1…Kf5!
harmless and slow 1…a6 e.g. 2.Ka7 (2.Bd1=) 2…Kg5 3.Bd1 f5 (3…Kf4 4.a4=) 4.Kxa6 f4 5.Ka5 Kh4 6.a4 bxa4 7.Bxa4 Bxf3 8.Kb6 Kg3 9.Kc5 Bg2 10.Bd1 Kf2 11.Bg4 Ke3 12.Bd1 Kd2 (12…Bf3 13.Bxf3 Kxf3 14.Kxc6) 13.Bg4 Kc3 14.Bd1 f3 15.Bxf3 Bxf3 16.b5=; 1…Kg5! 2.Bd1! a6 (2…Kf4! see main line) 3.Ka7 f5 4.Kxa6

2.Bd1!
try 2.Kxa7? Kf4 3.Kb6 f5! (3…Ke3? 4.Bd1 Kd2 5.a4!÷) 4.Bd1 Bxf3 5.a4 (5.Bb3 Ke5 6.a4 (6.Kc5 f4 7.a4 Be2–+) 6…bxa4 7.Bxa4 Kd6 8.b5 c5) 5…Bxd1 6.a5 c5 7.bxc5 b4 8.c6 b3 9.c7 b2–+

2…Kf4
2…a6 3.Ka7! (3.a4? bxa4!–+) 3…Kf4 4.a4!=

3.a4!
3.Kxa7? Bxf3 4.Bb3 Bd5 5.Bc2 Be4 6.Bb3 f5–+

3…a5!? subline 1
3…Bxf3 is weak 4.Bxf3 Kxf3 (4…bxa4 5.Bxc6 a3 6.Bd5) 5.a5;
3…Ke3!? subline 2 4.Kxa7 (4.a5? Kd2 5.Kxa7 c5; 4.axb5? cxb5) 4…Kd2 attempt to win a material 5.Kb6! (5.a5? c5 6.bxc5 Kxd1 7.Kb6 b4) 5…Kxd1 6.a5 c5 7.Kxc5= draw, e.g. (7.bxc5? b4) 7…Bxf3 8.Kxb5 (8.a6=) 8…f5 9.a6 f4 (9…Be2+ 10.Kc5= (10.Kc6=) ) 10.Ka5 (or 10.Kc5 )
3…bxa4 is not dangerous 4.Bxa4 Bxf3 (4…a6 5.Ka7 Bxf3 6.Kxa6 Ke3 7.Kb6 f5 8.Bxc6 Bxc6 9.Kxc6 f4 10.b5) 5.Kxa7 Ke5 6.Kb6 the simplest 6…Kd6 7.Bc2 Be2 8.Ba4 Bf3 9.Bc2=
3…c5 illogical way to break through. a7 is under attack. 4.bxc5! (4.axb5? cxb4 5.Kxa7 b3 6.b6 b2–+) 4…bxa4 5.Bxa4=

4.axb5!
4.bxa5? b4! 5.a6 c5! 6.Kc7 a) 6.a7 c4 7.Kc7 Ke3–+; b) 6.a5 c4 (enough to win as well 6…Ke3 7.Bc2 b3 8.Bxb3 Bxb3 9.a7 Bd5 10.a8Q Bxa8 11.Kxa8 c4 12.a6 c3 13.a7 c2) 7.Kc7 Ke3 8.Ba4 b3 9.a7 b2 10.Bc6 Bxc6 11.Kxc6 c3 (11…b1Q 12.a8Q) 12.a8Q c2–+; 6…Ke3 (or 6…Ke5 ) 7.Bb3 Bxb3 (7…c4) 8.a7 Bd5 here is the difference compared to 4. a:b5!

4…axb4! breakthrough
4…cxb5 5.bxa5 b4 6.a6 b3 7.a7 b2 8.Bc2 Bxf3 9.Kc7 Ke5 10.Kb6=

5.b6 c5 6.Kc7
6.b7? c4 7.Kc7 Bxb7 8.Kxb7 b3–+

6…Ke3!
6…c4 7.Kd6 Bb7 8.Kc5=

7.Bb3!
7.b7? Bxb7 8.Kxb7 c4 9.Kc6 b3 10.Kd5 b2 11.Bc2 Kd2–+
7.Kd6? Kd4!–+
7.Ba4? c4!–+

7…Bxf3
7…c4 8.Bxc4=

8.Bxf7
8.b7? Bxb7 9.Kxb7 f5–+

8…Kd4 9.b7 Bxb7 10.Kxb7=