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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Rb1 draw
3 Rb2 draw
4 Rb3 draw
5 Rb5 draw
6 Rb6 draw
7 Rc8 draw
8 Ka3 loss in 2 half-moves
9 Ka5 loss in 2 half-moves
10 Kb3 loss in 2 half-moves
11 Kb4 loss in 2 half-moves
12 Kb5 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Ke7 loss in 2 half-moves
15 Ke8 loss in 2 half-moves
16 Ra8 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Kc7 loss in 1 half-moves
19 Kc8 loss in 1 half-moves