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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Rb5 win in 3 half-moves
3 Rb2 win in 5 half-moves
4 Kcc5 win in 7 half-moves
5 Kdc3 win in 7 half-moves
6 Kdc5 win in 7 half-moves
7 Kdd5 win in 7 half-moves
8 Rb1 win in 7 half-moves
9 Kb3 draw
10 Kb5 draw
11 Kcc3 draw
12 Kcd3 draw
13 Kcd5 draw
14 Kdd3 draw
15 Ke3 draw
16 Ke4 draw
17 Ra4 draw
18 Rb6 draw
19 Ke5 loss in 2 half-moves
20 Rb7 loss in 2 half-moves
21 Rb8 loss in 2 half-moves