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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Ka4 draw
3 Ka6 draw
4 Kb5 draw
5 Kb6 draw
6 Kd3 draw
7 Ke3 draw
8 Rc3 draw
9 Kc1 loss in 2 half-moves
10 Kd1 loss in 2 half-moves
11 Ke1 loss in 2 half-moves
12 Ke2 loss in 2 half-moves
13 Ra2 loss in 2 half-moves
14 Rb2 loss in 2 half-moves
15 Rc1 loss in 2 half-moves
16 Rc4 loss in 2 half-moves
17 Rc5 loss in 2 half-moves
18 Rc6 loss in 2 half-moves
19 Rc7 loss in 2 half-moves
20 Rc8 loss in 2 half-moves
21 Kc3 loss in 1 half-moves