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 Rc7 win in 3 half-moves
3 Rc5 draw
4 Rc6 draw
5 Rc8 draw
6 Rd4 draw
7 Re4 draw
8 Rf4 draw
9 Rg4 draw
10 Rh4 draw
11 Ra4 loss in 2 half-moves
12 Rb4 loss in 2 half-moves
13 Rc1 loss in 2 half-moves
14 Rc2 loss in 2 half-moves
15 Rc3 loss in 2 half-moves