Chess problem №185920

Solution

1.g3-g4 ! цугцванг.
1...Фg1*h2
2.Сh3-g2 +
2...Крh1-g1
3.Фc2-c5 #
3.Кe1-f3 #
2...Фh2*g2
3.Фc2*g2 #
1...Фg1-a7
2.Фc2-g2 #
1...Фg1-b6
2.Фc2-g2 #
1...Фg1-c5
2.Фc2-g2 #
1...Фg1-d4
2.Фc2-g2 #
1...Фg1-e3
2.Фc2-g2 #
1...Фg1-f2
2.Фc2*f2 угроза:
3.Фf2-g2 #
1...Фg1*e1
2.Фc2-g2 #
1...Фg1-f1
2.Сh3*f1 угроза:
3.Фc2-g2 #
1...Фg1*g4
2.Сh3*g4 угроза:
3.Фc2-g2 #
1...Фg1-g3
2.h2*g3 угроза:
3.Фc2-g2 #
1...Фg1-g2
2.Фc2*g2 #
1...Кa8-b6
2.Сh3-g2 +
2...Фg1*g2
3.Фc2*g2 #
2...Крh1*h2
3.Фc2-c7 #
1...Кa8-c7
2.Сh3-g2 +
2...Фg1*g2
3.Фc2*g2 #
2...Крh1*h2
3.Фc2*c7 #