Inspired by the work of Ladislav Prokes, Noam Elkies created a different windmill study by moving the black pawn from d7 to h5 and removing the pawn on g7 from the original work and spinning the queen in two directions:
1.f4+
Kg4
2.Qg3+
Kf5
3.Qg5+
Ke4
4.Qxe5+
Kf3
5.Qe3+
Kg4
6.Qg3+
Kf5
7.Qxd3+!
Preparing to spin the windmill the other way.
7...Kg4
[After 7...Kxf4
White wins with 8.Qg3+
(Or 8.Qe3+
Kg4
9.Qg3+
Kf5
10.Qf3++-
) 8...Ke4
9.Qe3+
Kxd5
10.Qb3++-
; 7...Kf6
8.Qc3+
transposes to the main line two moves early.]
8.Qg3+
Kf5
9.Qh3+!
Ke4
[9...Kf6
10.Qc3+
Kf5
(10...e5
11.Qxe5#
) 11.Qe5+
transposes to the main line.]
10.Qe3+
Kf5
[10...Kxd5
11.Qb3++-
]
11.Qe5+
Kg4
12.Qg5+
Kf3
13.Qg2+!
Kxf4
14.Qg3+
Ke4
[14...Kf5
15.Qf3++-
]
15.Qe3+
Kxd5
16.Qb3+
wins *