1. Be5!! Bxe5 1... d4 2. Bxd4 Bxd4 3. Kd5 b2 4. Kxd4 b1=Q 5. Be4+ 2. Kxd5 Kf5 2... b2 3. Kxe5 b1=Q 4. Be4+ 2... Kf6 3. Kc4 b2 4. Be4 3. Bc6! b2 4. Ba4! b1=Q 5. Bc2+!! Qxc2 1/2-1/2