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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Ke2 win in 3 half-moves
3 Kf2 win in 3 half-moves
4 Kd3 win in 5 half-moves
5 Ke1 win in 5 half-moves
6 Rc1 win in 11 half-moves
7 Rc2 win in 11 half-moves
8 Kb4 draw
9 Kb5 draw
10 Kd4 draw
11 Kg1 draw
12 Kg2 draw
13 Ra3 draw
14 Rb3 draw
15 Rd3 draw
16 Rh3 draw
17 Kc5 loss in 2 half-moves
18 Kd5 loss in 2 half-moves
19 Re3 loss in 2 half-moves
20 Rf3 loss in 2 half-moves
21 Rg3 loss in 2 half-moves