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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 Rb3 win in 1 half-moves
3 Rb4 win in 1 half-moves
4 Rb5 win in 1 half-moves
5 Rb6 win in 1 half-moves
6 Rb7 win in 1 half-moves
7 Ka1 draw
8 Ka3 draw
9 Kb1 draw
10 Kb2 draw
11 Kb3 draw
12 Kd7 draw
13 Kd8 draw
14 Ke7 draw
15 Kf7 draw
16 Ra8 draw
17 Rc8 draw
18 Rd8 draw
19 Kf8 loss in 1 half-moves
20 Rb2 loss in 1 half-moves