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

EGTB: win in 4 half-moves

# move score
1 f7 win in 3 half-moves
2 Rc1 draw
3 Rc2 draw
4 Rc3 draw
5 Rc4 draw
6 Rd8 draw
7 Re8 draw
8 Rf8 draw
9 Rg8 draw
10 Rh8 draw
11 Ra8 loss in 2 half-moves
12 Rb8 loss in 2 half-moves
13 Rc5 loss in 2 half-moves
14 Rc6 loss in 2 half-moves
15 Rc7 loss in 2 half-moves