Nº22 Oleg Pervakov & Alexander Stavrietsky

Win

Oleg Pervakov & Alexander Stavrietsky (Russia)

wKb1,Qa2,Nd8,Ba5,Rf2,Pb4,e3,g4,h5/bKc8,Qd7,Be1,Rh1,Pb5,b7

1.Rc2+
1.Qc2+? Bc3+ 2.Ka2 Qd5+ 3.Qb3 Ra1#

1…Bc3+! 2.Rc1 Qh7+! Counterplay for perpetual check
2…Qd3+ 3.Qc2 Rh2 4.Qxd3 Rb2+ 5.Ka1 Rc2+ , and bishop c3 under blow 6.Qxc3!+-

3.e4!
But not 3.Qc2? Rh2! 4.Qf5+ Qxf5+! 5.gxf5 Rb2+ 6.Ka1 Rc2+ 7.Kb1 Rb2+=

3…Qxe4+ 4.Qc2 Rh2!
4…Rxc1+ 5.Kxc1 Qf4+ (5…Qe1+ 6.Qd1 Qf2 7.Qd3!+-) 6.Kb1 Qf1+ 7.Ka2 Qc4+ 8.Ka3 Bxb4+ 9.Kb2 Bxa5 10.Nf7!+-

5.Nxb7! Openning diagonal a8-h1
Thematic try 5.Nf7? Qh7! (5…Kb8? 6.Ng5!+-) 6.Nd6+ Kb8 7.Bc7+!? Ka8! 8.Qxh7 Rb2+ 9.Ka1 Rc2+ 10.Kb1 Rb2+=

5…Qh7! 6.Nd6+ Kb8 7.Bc7+! Ka8
7…Ka7 8.Nxb5+-

8.Qe4+! Decisive check 8…Qxe4+ 9.Nxe4 Rb2+ 10.Ka1 Rc2+ 11.Nxc3+-