Решение шахматной задачи №63998
Мат в 4 хода |
a)
1.Ra5-a3 ! zugzwang.
1...Kh3-h2
2.Kf3-f2 zugzwang.
2...f5-f4
3.Ra3-f3 zugzwang.
3...Kh2-h1
4.Rf3-h3 #
2...Kh2-h1
3.Ra3-h3 #
1...Kh3-h4
2.Kf3-f4 threat:
3.Kf4*f5 zugzwang.
3...Kh4-h5
4.Ra3-h3 #
2...Kh4-h5
3.Ra3-a6 zugzwang.
3...Kh5-h4
4.Ra6-h6 #
1...f5-f4
2.Ra3-d3 zugzwang.
2...Kh3-h4
3.Rd3-d5 zugzwang.
3...Kh4-h3
4.Rd5-h5 #
2...Kh3-h2
3.Rd3-d1 zugzwang.
3...Kh2-h3
4.Rd1-h1 #
b) wPc4-->d5
1.Ra5-a4 ! threat:
2.Kf3-f2 threat:
3.Ra4-f4 zugzwang.
3...Kh3-h2
4.Rf4-h4 #
1...Kh3-h2
2.Ra4-f4 zugzwang.
2...Kh2-h3
3.Kf3-f2 zugzwang.
3...Kh3-h2
4.Rf4-h4 #
2...Kh2-h1
3.Kf3-f2 threat:
4.Rf4-h4 #
2...Kh2-g1
3.Kf3-g3 zugzwang.
3...Kg1-h1
4.Rf4-f1 #
1...f5-f4
2.Ra4-e4 zugzwang.
2...Kh3-h2
3.Re4-e1 zugzwang.
3...Kh2-h3
4.Re1-h1 #
2...Kh3-h4
3.Re4-e5 zugzwang.
3...Kh4-h3
4.Re5-h5 # |