Nº22 Michael Pasman

Draw

Section B.2.

Michael Pasman (Israel)

wKb2,Bg5,Rh5,h8,Pf7,g7/bKa4,Qa5,Bb4,Rc5,Pc6

Black has mating threats with Ba3 or Bc3 1.Ra8!! Forcing the black queen to move from a5 to a8 with rook sacrifice !
1.Rb8? Rc4!–+
1.f8Q? Ba3-+

1…Qxa8
Secondary line : 1…Bc3+ 2.Ka2 Kb4+! 3.Kb1!! (3.Rxa5? Rxa5+ 4.Kb1 Kb3!–+) 3…Qb5 4.Rb8!! Qxb8 5.f8Q Qb5 6.Qxc5+!! Kxc5+ 7.Kc2 Qb2+ 8.Kd3 Qb3 9.Bf6+! Kb6 10.Bxc3=

2.f8Q Ba3+ 3.Ka1!
3.Ka2? Rc2+ 4.Kb1 Rb2+ 5.Ka1 Bxf8 6.g8Q Kb5+ 7.Kxb2 Ba3+ 8.Kb3 Qxg8-+

3…Rc1+!
3…Qa6 4.Rh3! Rxg5 5.g8Q Bxf8 6.Qa2+ Kb5 7.Rb3+ Bb4 8.Qxa6+ Kxa6 9.Rxb4=

4.Bxc1 Bxf8 5.Ra5+!! Forcing the black queen to move back (forced switchback) from a8 to a5 with another rook sacrifice!!
5.g8Q Bg7+! 6.Qxg7 Kb3+–+

5…Qxa5
5…Kxa5 6.g8Q=

6.g8Q! Bg7+! 7.Bb2!
7.Qxg7? Kb3-+

7…Kb4+!
7…Bxb2+ 8.Kxb2 Qd2+ (8…Qb4+ 9.Kc2) 9.Kb1 Qd3+ 10.Kb2=
7…Kb5+ 8.Kb1 Qe1+ 9.Ka2=

8.Kb1 Bxb2
8…Qf5+ 9.Ka2 Qa5+ 10.Kb1=

9.Qb3+!!
9.Kxb2? Qa3+ 10.Kc2 Qc3+–+ Forcing queen Exchange

9…Kc5
9…Kxb3 Stalemate

10.Kxb2
10.Qxb2? Qb4–+

10…Qb4 11.Ka1! Qxb3 Model Stalemate. Forced switchbacks (Qa5-a8, Qa8-a5) by rook sacrifices