Leonid Makaronez (Russia)
 
#3 5+2

1.Sg7-e6 ? threat:
2.Qf8-g7 +
2...Kg6-f5
3.Se6-d4 #
2...Kg6-h5
3.Qg7-g5 #
1...Kg6-h5
2.Qf8-f5 +
2...Kh5-h6
3.Qf5-g5 #
2...Kh5-h4
3.Bg1-f2 #
but
1...h7-h6 !

 

1.Sg7-h5 ! threat:
2.Qf8-f6 +
2...Kg6*h5
3.Qf6-g5 #
1...Kg6*h5
2.Qf8-f5 +
2...Kh5-h4
3.Bg1-f2 #
2...Kh5-h6
3.Qf5-g5 #
1...h7-h6
2.Bg1-f2 zugzwang.
2...Kg6*h5
3.Qf8-f5 #
2...Kg6-h7
3.Qf8-g7 #

 
1.Sg7-e8 ? threat:
2.Qf8-f6 +
2...Kg6-h5
3.Qf6-g5 #
1...Kg6-h5
2.Qf8-f5 +
2...Kh5-h4
3.Bg1-f2 #
2...Kh5-h6
3.Qf5-g5 #
but
1...h7-h6 !

1.f4-f5 + ?
1...Kg6-h6
2.Qf8-f6 #
but
1...Kg6-g5 ! 

 
1.Bg1-f2 ? zugzwang.
1...Kg6-h6
2.Qf8-f6 #
1...h7-h6
2.Sg7-h5 zugzwang.
2...Kg6-h7
3.Qf8-g7 #
2...Kg6*h5
3.Qf8-f5 #
but
1...h7-h5 !   (Author)