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

EGTB: win in 4 half-moves

# move score
1 Kab6 win in 3 half-moves
2 Kaa6 win in 5 half-moves
3 Kab4 win in 5 half-moves
4 Kba6 win in 5 half-moves
5 Kc6 win in 5 half-moves
6 Ra6 win in 5 half-moves
7 Rc7 win in 7 half-moves
8 Kaa4 draw
9 Kba4 draw
10 Kbb4 draw
11 Kbb6 draw
12 Kc4 draw
13 Kc5 draw
14 Ra8 draw
15 Rb7 draw
16 Rd7 draw
17 Rh7 draw
18 Re7 loss in 2 half-moves
19 Rf7 loss in 2 half-moves
20 Rg7 loss in 2 half-moves