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

EGTB: win in 6 half-moves

# move score
1 Rc1 win in 5 half-moves
2 Rc2 draw
3 Rc3 draw
4 Rc4 draw
5 Rc5 draw
6 Rc8 draw
7 Ka1 loss in 2 half-moves
8 Ka3 loss in 2 half-moves
9 Kb1 loss in 2 half-moves
10 Kb2 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Kc7 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Ke6 loss in 2 half-moves
15 Ke7 loss in 2 half-moves
16 Ra6 loss in 2 half-moves
17 Rb6 loss in 2 half-moves
18 Rc7 loss in 2 half-moves
19 Kc5 loss in 1 half-moves
20 Kd5 loss in 1 half-moves
21 Ke5 loss in 1 half-moves