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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kcb7 win in 3 half-moves
3 Rd8 win in 3 half-moves
4 Kc6 win in 5 half-moves
5 Ka7 win in 7 half-moves
6 Ka8 win in 7 half-moves
7 Kbb7 win in 7 half-moves
8 Kd8 draw
9 Rh8 draw
10 Kd6 loss in 2 half-moves
11 Kd7 loss in 2 half-moves
12 Re8 loss in 2 half-moves
13 Rf8 loss in 2 half-moves
14 Rg8 loss in 2 half-moves