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

EGTB: win in 4 half-moves

# move score
1 K4b3 win in 3 half-moves
2 K4d3 win in 3 half-moves
3 Kb5 win in 3 half-moves
4 Kd5 win in 3 half-moves
5 Rb2 win in 3 half-moves
6 Rb5 win in 3 half-moves
7 K3d3 win in 7 half-moves
8 K3d4 win in 7 half-moves
9 K4d4 win in 7 half-moves
10 Kb2 win in 7 half-moves
11 Kc2 win in 7 half-moves
12 Kc5 win in 7 half-moves
13 Kd2 win in 7 half-moves
14 Rb1 win in 7 half-moves
15 Rb3 win in 7 half-moves
16 K3b3 draw
17 Ra4 draw
18 Rb6 draw
19 Rb7 loss in 2 half-moves
20 Rb8 loss in 2 half-moves