+
1. Kg7! (1Ke7?a3 2. f8Q a2 3. Qf1 Kb2 4. Qe2 Kb1 5. Qe1 Kb2 6. Qb4 Kc2! 7.Qa3 Be6!! =) a3 2. f8Q a2 3. Qa3! Kb1 4. Qb3 Ka1 5. Qc2 Bf5 6. Qc1 Bb1 7. Qc3#