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

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Kcc2 win in 3 half-moves
3 Kcd2 win in 3 half-moves
4 Rb2 win in 3 half-moves
5 Rb4 win in 3 half-moves
6 Kc3 win in 7 half-moves
7 Kc4 win in 7 half-moves
8 Kdc2 win in 7 half-moves
9 Kdd2 win in 7 half-moves
10 Ke2 win in 7 half-moves
11 Ke3 win in 7 half-moves
12 Rb3 win in 7 half-moves
13 Kd1 draw
14 Kd4 draw
15 Ke4 draw
16 Ra1 draw
17 Rb5 draw
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rb8 loss in 2 half-moves