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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Kb6 win in 3 half-moves
4 Rb7 win in 3 half-moves
5 Ka4 win in 7 half-moves
6 Ka6 win in 7 half-moves
7 Ka8 win in 7 half-moves
8 Kc8 win in 7 half-moves
9 Rc7 win in 7 half-moves
10 Rd7 win in 7 half-moves
11 Kc7 win in 11 half-moves
12 Ra8 win in 15 half-moves
13 Ra6 win in 17 half-moves
14 Kb7 draw
15 Re7 draw
16 Rf7 loss in 2 half-moves
17 Rg7 loss in 2 half-moves
18 Rh7 loss in 2 half-moves