Section A1 – Win
1.Kf3! Qd3+
( 1…Qf8+ 2.Bf4 Ra2 3.Bxb3 Rg2 4.Rh5 Rg7 5.Rd5 +- )
2.Be3+ Qxe3+ 3.Kxe3 b2 4.Rg3+!
( 4.Bf3? Ra3+ 5.Kf4 Rxf3+ 6.Kxf3 b1=Q 7.Rg3+ Kh2 8.Rg2+ Kh3 )
( 4.Nc3? Ra3 5.Rg3+ Kh2 6.Kf2 Rxc3 7.Rxc3 b1=Q =, quiet )
4…Kh2 5.Bc2 Ra1 6.Kf2! b1=Q 7.Rg2+ Kh3 8.Ng5+ Kh4 9.Nf3+ Kh5 10.Rh2+ Kg4 11.Rh4#
Model Mate
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