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

EGTB: win in 4 half-moves

# move score
1 Kc4 win in 3 half-moves
2 Kd4 win in 3 half-moves
3 Kb4 win in 5 half-moves
4 Kb5 draw
5 Kd1 draw
6 Kd2 draw
7 Kd5 draw
8 Ke2 draw
9 Kf1 draw
10 Kf2 draw
11 Ra1 draw
12 Ra2 draw
13 Ra4 draw
14 Ra5 draw
15 Rb3 draw
16 Rc3 draw
17 Rf3 draw
18 Kb6 loss in 2 half-moves
19 Kc6 loss in 2 half-moves
20 Kd6 loss in 2 half-moves
21 Ra6 loss in 2 half-moves
22 Ra7 loss in 2 half-moves
23 Ra8 loss in 2 half-moves
24 Rd3 loss in 2 half-moves
25 Re3 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rh3 loss in 2 half-moves