1. Le5!! Lxe5 1... d4 2. Lxd4 Lxd4 3. Kd5 b2 4. Kxd4 b1=D 5. Le4+ 2. Kxd5 Kf5 2... b2 3. Kxe5 b1=D 4. Le4+ 2... Kf6 3. Kc4 b2 4. Le4 3. Lc6! b2 4. La4! b1=D 5. Lc2+!! Dxc2 1/2-1/2