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

EGTB: win in 22 half-moves

# move score
1 Rb8 win in 21 half-moves
2 Kd4 draw
3 Kd7 draw
4 Kd8 draw
5 Ke7 draw
6 Kf7 draw
7 Kf8 draw
8 Ra4 draw
9 Rb1 draw
10 Kb3 loss in 2 half-moves
11 Kb5 loss in 2 half-moves
12 Kc3 loss in 2 half-moves
13 Kc5 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Kd5 loss in 2 half-moves
16 Rb2 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rb6 loss in 2 half-moves
20 Rb7 loss in 2 half-moves