Решение шахматной задачи №77752

1.Sf5-h4 ! threat: 2.Rb5-b8 zugzwang. 2...Kh3-h2 3.Sh4-f3 + 3...Kh2-h3 4.Rb8-h8 # 3...Kh2-h1 4.Rb8-h8 # 2...g2-g1=Q 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb8-b3 # 2...g2-g1=S 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb8-b3 # 2...g2-g1=R 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb8-b3 # 2...g2-g1=B 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb8-b3 # 2.Rb5-b7 zugzwang. 2...Kh3-h2 3.Sh4-f3 + 3...Kh2-h3 4.Rb7-h7 # 3...Kh2-h1 4.Rb7-h7 # 2...g2-g1=Q 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb7-b3 # 2...g2-g1=S 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb7-b3 # 2...g2-g1=R 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb7-b3 # 2...g2-g1=B 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb7-b3 # 2.Rb5-b6 zugzwang. 2...Kh3-h2 3.Sh4-f3 + 3...Kh2-h3 4.Rb6-h6 # 3...Kh2-h1 4.Rb6-h6 # 2...g2-g1=Q 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb6-b3 # 2...g2-g1=S 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb6-b3 # 2...g2-g1=R 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb6-b3 # 2...g2-g1=B 3.Bd4*g1 zugzwang. 3...g3-g2 4.Rb6-b3 # 1...Kh3-h2 2.Sh4-f3 + 2...Kh2-h3 3.Rb5-b2 zugzwang. 3...g2-g1=Q 4.Sf3*g1 # 3...g2-g1=S 4.Sf3*g1 # 3...g2-g1=R 4.Sf3*g1 # 3...g2-g1=B 4.Sf3*g1 # 2...Kh2-h1 3.Rb5-b1 + 3...g2-g1=Q 4.Rb1*g1 # 3...g2-g1=S 4.Rb1*g1 # 3...g2-g1=R 4.Rb1*g1 # 3...g2-g1=B 4.Rb1*g1 #