Nº4 Michael Pasman

Win

Michael Pasman (Israel)

wKf1,Ng4,Bh4,Pd6,e2,f6/bKc3,Pa2,b4

1.Kf1!
1.d7? a1Q+ 2.Kf2 Qa7+ 3.e3 Qxd7–+
1.f7? a1Q+ 2.Kf2 Qa7+ 3.Kg3 Qxf7–+

1…a1Q+ 2.Be1+ Kd4
2…Kc2 3.d7!+- (3.f7? Qg7=)

3.f7!
Logcal try : 3.d7? Qa8 4.Bxb4 (4.e3+ Kd5 5.Bxb4 Ke6=) 4…Qh1+ 5.Kf2 Qh4+ 6.Kf3 Qh3+ 7.Kf4 Qe3+!! Position X1 – see X2 in secondary (thematic) line 8.Kf5 (8.Nxe3 Stalemate !) 8…Qe4+ 9.Kg5 Qd5+ 10.Kf4 (10.Kh6 Qxd7) 10…Qxd7 11.e3+ Position Y1, see Y2 in the main line 11…Kd5!= f6 square is taken by white pawn , so no fork

3…Qa8 4.Bxb4 Qf8
Secondary line (thematic) : 4…Qh1+ 5.Kf2 Qh4+ 6.Kf3 Qh3+ 7.Kf4 Qe3+ Position X2 with f-pawn on f7 instead of d-pawn 8.Kf5! Qe4+ 9.Kg5!+- (not 9.Kf6? Qf4+ 10.Ke7 Qe4+ 11.Kd8 (11.Kf8 Qxg4=) 11…Qa8+ 12.Kd7 Qb7+=)

5.d7!
5.Ke1? Kc4! 6.Ba3 Kb3! 7.Bc5 Qxf7=
5.Kg2? Qxf7 6.d7 Qd5+=
5.e3+!? Kc4=

5…Qxf7+ 6.Ke1!
6.Kg1? Qg8=

6…Qxd7
6…Qd5 7.e3+! Kd3 8.Be7 Qh1+ (8…Qxd7 9.Ne5+ Ke4 10.Nxd7+-) 9.Kf2+-

7.e3+! Position Y2 – without f6 pawn allows check on f6 7…Kd5
7…Ke4 8.Nf6++-
7…Kc4 8.Ne5++-
7…Kd3 8.Ne5++-

8.Nf6+ Ke6 9.Nxd7+-

2 logical differences from logical try line