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

EGTB: win in 4 half-moves

# move score
1 Re8 win in 3 half-moves
2 Kb6 win in 5 half-moves
3 Kd5 win in 5 half-moves
4 Rf8 win in 5 half-moves
5 Kd6 win in 7 half-moves
6 Kb7 draw
7 Kc7 draw
8 Kd7 draw
9 Rc8 draw
10 Rg8 draw
11 Rh8 draw
12 Kb5 loss in 2 half-moves
13 Kc5 loss in 2 half-moves
14 Nb5 loss in 2 half-moves
15 Nc8 loss in 2 half-moves
16 Rb8 loss in 2 half-moves
17 Rd8 loss in 2 half-moves