Nº15 Ivan Filippov

Win

Section B.1.

Ivan Filippov (Russia)

wKb2,Rb5,Pc3,d4,f6,g5,h6/bKh8,Qg8,Pd6,e7,h7

1.f7! Qa8
Not 1…Qxf7 2.Rb8+ Qg8 3.Rxg8+ Kxg8 4.c4 Kf7 5.c5+-
1…Qf8 2.Rf5+- Not 2.d5? Qxf7 3.Rb8+ Qg8 4.Rxg8+ Kxg8 5.Kb3 Kf7 6.Kb4 Kg6 7.Kb5=

2.Rf5
Thematic try 2.d5? e5! 3.dxe6 Qg2+ 4.Ka3 Qa8+ 5.Kb3 Qd5+! 6.Kb4 (6.Rxd5= stalemate) 6…Qe4+ 7.Ka5 Qa8+ 8.Kb6 Qb8+ 9.Kc6 Qc8+ 10.Kb6 Qb8+ 11.Ka5 Qa8+ 12.Kb4 Qe4+ 13.c4 Qe1+! 14.Ka4 Qa1+! 15.Kb4 Qe1+= perpetual check.

2…Qb7+ 3.Kc1!
Thematic try 3.Ka3? Qa6+! 4.Kb4 Qb7+! 5.Rb5 Qa8! 6.Rf5 Qb7+ 7.Ka3 Qa6+ 8.Kb2 Qe2+! Position A1 – The White King must go back. 9.Ka3 Qa6+= perpetual check.

3…Qh1+ 4.Kd2 Qg2+ Position A – The White King moves forward under the protection of the Rook. 5.Ke3!
5.Kd3? Qh3+! 6.Ke4= perpetual check.

5…Qg3+
or 5…Qg1+ 6.Ke2 Qg2+ 7.Rf2 to the main line.

6.Ke2!
6.Rf3? Position B1 – draw. 6…Qe1+! 7.Kd3 Qd1+!= perpetual check.

6…Qg4+
or 6…Qg2+ 7.Rf2 to the main line.

7.Rf3 Position B – win 7…Qe4+ 8.Kf2 Qh4+ 9.Kf1 Qh1+ 10.Ke2 The White King is coming back.
10…Qg2+ 11.Rf2 Echo position B1 – win.
Loss of time 11.Ke3 Qg1+ 12.Ke2 Qg2+ 13.Rf2.

11…Qg4+
11…Qe4+ 12.Kd2+- Not 12.Kf1? Qb1+ (12…Qd3+) 13.Kg2 Qe4+ 14.Rf3 Position B2 – draw. 14…Qe2+ 15.Kg3 Qe1+ 16.Kg2 Qe2+= perpetual check.

12.Kd2
Loss of time 12.Ke1 Qg1+ 13.Ke2 Qg4+.

12…Qxg5+ 13.Kc2+-

Additional line 1…Qc8 2.d5! Qf8 3.Kc2(c1) Qc8
3…Qxf7 4.Rb8+ Qg8 5.Rxg8+ Kxg8 6.Kd3 Kf7 7.Ke4 Kg6 8.Kf4+-

4.Kd2! Qf8 5.Rb1 Qa8 6.c4 e5 7.Rf1 Qa2+ 8.Ke3! Qb3+-
or 8…Qa7+ 9.Ke2 Qa2+ 10.Kf3 Qb3+ 11.Kg2 Qc2+ 12.Kg1+- ( 12.Rf2? Position C. 12…Qe4+! 13.Kh2 Qh4+= perpetual check.)

9.Kf2 Qb2+ 10.Kg3 Qc3+ 11.Kg2(h2)
11.Rf3? Echo position C1. 11…Qe1+ 12.Kh3 Qh1+= perpetual check.

11…Qd2+ 12.Kh1!+-