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 Kcd5 win in 3 half-moves
4 Kd4 win in 3 half-moves
5 Rb8 win in 3 half-moves
6 Re8 win in 3 half-moves
7 Kd7 win in 5 half-moves
8 Rc7 win in 5 half-moves
9 Kc7 win in 7 half-moves
10 Ke7 win in 7 half-moves
11 Rc6 win in 7 half-moves
12 Kc4 win in 13 half-moves
13 Kb6 draw
14 Kcc6 draw
15 Kdc6 draw
16 Kdd5 draw
17 Ke5 draw
18 Ke6 draw
19 Ra8 draw
20 Rd8 draw
21 Rf8 draw
22 Rg8 loss in 2 half-moves
23 Rh8 loss in 2 half-moves