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 Ka3 win in 5 half-moves
3 Kb2 win in 5 half-moves
4 Kb3 win in 5 half-moves
5 Kb5 win in 5 half-moves
6 Rc1 win in 5 half-moves
7 Rc2 win in 5 half-moves
8 Rc3 win in 5 half-moves
9 Ka1 draw
10 Kb1 draw
11 Kb6 draw
12 Kc6 draw
13 Kd4 draw
14 Kd5 draw
15 Kd6 draw
16 Ra4 draw
17 Rb4 draw
18 Rd4 draw
19 Re4 draw
20 Rf4 draw
21 Rg4 loss in 2 half-moves
22 Rh4 loss in 2 half-moves