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 Kd4 win in 3 half-moves
4 Rb3 win in 3 half-moves
5 Kb2 win in 7 half-moves
6 Kc2 win in 7 half-moves
7 Kc4 win in 7 half-moves
8 Kd2 win in 7 half-moves
9 Rc2 win in 7 half-moves
10 Kb1 draw
11 Kb6 draw
12 Kc6 draw
13 Kd1 draw
14 Kd5 draw
15 Kd6 draw
16 Ra3 draw
17 Rc4 draw
18 Rd3 draw
19 Re3 draw
20 Rf3 loss in 2 half-moves
21 Rg3 loss in 2 half-moves
22 Rh3 loss in 2 half-moves