186

Iuri Akobia
Suomen Tehtavaniekat, 2008
Win

Clearly that it is necessary to save Bb8. However, it is not clear as it to make. Exact calculation is necessary. Correct chose:

1.Ba7! [Wrong try 1.Bc7!? Rxb4+ 2.Kxc1 Kg7 3.Ne5 (3.Be8 Rc4+= ) 3...Rb7= ; 1.Be5!? Nd3 2.Nf8+ Kh6 3.Bc3 Nxb4= ] 1...Rxb4+ [1...Rb7 2.Nf8+ leads to main line]
2.Kxc1
Kg7 main B [main A 2...Rb7 3.Nf8+ Kh6 4.Be3+ Kg7 5.Ne6+ Kxf7 6.Nd8++-]
3.Be8 Kf6 4.Kd1!!
important key move. wK should not leave the first rank. Again are several main lines here: [Wrong try 4.Kd2!? Rg4 5.Nf8 Ke7 6.Bh5 Rg2+= ] 4...Rc4 main B3 [also B1 4...Re4 5.Bb5 Kxg6 6.Bd3 Kf5 7.Bb8+- , or B2 4...Rg4 5.Nf8 Ke7 6.Bh5 Rg5 7.Ng6+ Kf7 8.Nf4++- ] 5.Bb5 Rc7 6.Bb6! Rb7 7.Nf8 Ke7 (also7...Rxb6 8.Nd7++- and 7...Kg7 8.Nd7+- ) 8.Bc5++-

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