1.Ka5!! Rb7 2.Qh3! Be4 3.Qc8+ Ka7

4.Qc4! Bg2 5.Qc5+! Ka8

(5…Kb8 6.Qf8+! Kc7/Ka7 7.Qg7+/Qf2+)

6.Qc8+! Ka7 7.Qc4!! Bh3

(7…Ka8/Kb8 8.Qg8+! - ww

7…Rd7 8.Qg4! Rd2 9.Qe6! Rd5+ 10.Kb4!

And the bishoi is caught, for example:

10…Kb7 11.Qf7+ Kc8 12.Qg8+ - white wins)

8.Qd4+! Kb8 9.Qe5+!

(9.Qh8+ Bc8! = =)

9…Ka8/Ka7 10.Qh8+!/Qe3+!

 

Else:

1…Bb7 2.Qd8+! Ka7 3.Qd4+!

1…Bg2 2.Qa6+! Kb8 3.Qf6!

(3…Rb7 4.Qf8+ - white wins

3…Ra2+ 4.Kb6! – white wins ))

1…Ra2+ 2.Kb6! Rb2+ 3.Kc5!

(3…Rf2 4.Qc3 ~ 5.Qa1+/Qh8+ - white wins

3…Rb7 4.Qf1 Rc7+ 5.Kd6 Rc6+ 6.Kd7Be4 7.Qf8+ Ka7

8.Qa3+ Kb7 9.Qb4+ - white wins

4…Be4 5.Qa1+! Ra7 6.Qh8+! Kb7 7.Qg7+! Kb8 8.Qe5+ - white wins )