Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Rf8 win in 3 half-moves
2 Rc3 draw
3 Rc5 draw
4 Rc6 draw
5 Rc7 draw
6 Rd8 draw
7 Re8 draw
8 Kf7 loss in 2 half-moves
9 Kf8 loss in 2 half-moves
10 Kgg7 loss in 2 half-moves
11 Kgh7 loss in 2 half-moves
12 Khg7 loss in 2 half-moves
13 Khh7 loss in 2 half-moves
14 Ra8 loss in 2 half-moves
15 Rb8 loss in 2 half-moves
16 Rc1 loss in 2 half-moves
17 Rc2 loss in 2 half-moves
18 Rc4 loss in 2 half-moves