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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Kc4 win in 3 half-moves
3 Ka1 draw
4 Ka3 draw
5 Kb1 draw
6 Kb2 draw
7 Kc6 draw
8 Kd4 draw
9 Kd6 draw
10 Ke4 draw
11 Ke5 draw
12 Ke6 draw
13 Ra5 draw
14 Rb5 draw
15 Rc1 draw
16 Rc6 draw
17 Rc7 draw
18 Rc8 draw
19 Rc2 loss in 2 half-moves
20 Rc3 loss in 2 half-moves
21 Rc4 loss in 2 half-moves