Nº13 Oleg Pervakov

Win

Section B.1.

Oleg Pervakov (Russia)

wKg3,Na5,Bg2,Pb3,b7,d2,d7,f3,g7,h6/bKa6,Qb8,Nc2,f2,Bb6,f1,Pb4,c7,d6,e5,h2

1.Nc6!
1.h7? Bxg2 2.Kxh2 Kxa5 3.h8Q Qxb7 4.g8Q Qxf3 5.Qxg2 Qf4+ 6.Qg3 Ng4+ 7.Kh3 Nf2+=

1…Qg8
1…Qxb7 2.Bxf1++- with mate

2.b8Q
2.d8Q? h1Q 3.Bxh1 Nxh1+ 4.Kh4 Qe6 5.Qa8+ Kb5=

2…h1Q! 3.Bxh1
3.Qc8+? Kb5 4.Bxh1 Nxh1+ 5.Kh4 Qe6–+

3…Nxh1+
3…Qe6!? 4.Qa8+ Kb5 5.Na7+! Ka5! 6.Nb5+! Kxb5 7.Qa4+ Kc5 8.Qc6+! Kd4 9.Kxf2 Kd3+ 10.Qxb6! cxb6 11.d8Q Qxh6 12.g8Q+-

4.Kh4!
4.Kh2? Qh7! 5.Qa8+ Kb5 6.Na7+ Bxa7 7.Qb7+ Bb6 8.Qd5+ Bc5 9.Qe6 Nd4! 10.g8Q Nxf3+ 11.Kxh1 Qb1! 12.Qb8+ Ka6! 13.Qc8+ Kb6=

4…Qe6!
4…Qh7 5.Kg5! Bd3 6.Ne7+-
4…Qf7 5.Qa8+ Kb5 6.Na7+! Ka5! 7.Nb5+! Kxb5 8.Qa4+ Kc5 9.Qc6+! Kd4 10.Qe4+ Kc5 11.d8Q+- (11.Qxc2++-)

5.Qa8+
5.Kg5? Nf2–+; 5.Qb7+? Kb5 6.Na7+ Ka5=

5…Kb5 6.Na7+! The first part of preliminary plan: annihilation of white knight c6 6.Qa4+? Kc5–+

6…Bxa7
Or 6…Ka5 7.Nb5+! Kxb5 8.Qa4+ Kc5 9.Qc6+! and so on

7.Qb7+
7.Qc6+? Ka5! 8.Qa4+ Kb6 9.Qc6+ Ka5 10.Qxc7+ Bb6 11.Qxb6+ Kxb6 12.d8Q+ Kb7=

7…Bb6 8.Qc6+! The second part of preliminary plan: destruction of black knight c2 8…Ka6!
8…Kxc6 9.d8N+ Kd7 10.Nxe6+-

9.Qa8+
9.Qa4+ Ba5 10.Qc6+ Bb6 …

9…Kb5!
9…Ba7 10.Qb7+! Kxb7 11.d8N++-

10.Qa4+ Kc5 11.Qc6+! Kd4 12.Qe4+ Kc5 13.Qxc2+
13.d4+? Nxd4!–+

13…Kb5! 14.Qc6+! The third part of preliminary plan: taking control of c5-square 14…Ka6 15.Qa8+ Kb5 16.Qa4+ Kc5 17.Qc6+! Kd4 18.Qe4+ Kc5 19.d4+! Kb5 And the main plan: 20.Qc6+! Ka6 21.Qa8+ Kb5
Or 21…Ba7 22.Qb7+! Kxb7 23.d8N++-

22.Qa4# Five sacrificies of white queen on c6-square!
22.g8N? Bxd4!=