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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kc2 win in 3 half-moves
3 Kc3 win in 3 half-moves
4 Kc5 win in 3 half-moves
5 Kc6 win in 3 half-moves
6 Ra4 win in 3 half-moves
7 Rc4 win in 3 half-moves
8 Kb2 win in 5 half-moves
9 K3a4 draw
10 K3c4 draw
11 K5a4 draw
12 K5c4 draw
13 Ka2 draw
14 Ka3 draw
15 Ka5 draw
16 Ka6 draw
17 Rd4 draw
18 Re4 draw
19 Rf4 loss in 2 half-moves
20 Rg4 loss in 2 half-moves
21 Rh4 loss in 2 half-moves