Peter S. Krug (Аustria)
 
#7 2+4

1.Qa4! Try: 1.Qd5? Kb1 2.Qc4 Nf5 3.Kb3 Ne3 4.Qxd4 Kc1 5.Qxe3+ Kd1 6.Kc3 b1N+! 1.Qc4? b1N+!   1...Nf5 2.Kb3+ Kb1 3.Qb4! 3.Qa5? Bc3! 4.Qxc3 Nd4+! 5.Qxd4 Kc1! 3.Qc4? Ne3! similar to try 3.Qc6? Ng3! 4.Qg6+ Ka1! 5.Qa6+ Kb1 6.Qd3+ Ka1 7.Qxd4 Ne2 8.Qxb2#   With two lines   a) 3...Bf2 4.Qe4+ Ka1 5.Qa8+ Kb1 6.Qh1+ Bg1 [6...Be1 7.Qxe1#] 7.Qxg1#   b) 3...Be3 4.Qe1+! 4.Qe4+? Ka1 5.Qa8+ Kb1 6.Qh1+ Bc1   4...Bc1 5.Qe4+ Ka1 6.Qa8/a4 .Kb1 7.Qa2#