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

EGTB: win in 4 half-moves

# move score
1 Ka7 win in 3 half-moves
2 Kba6 win in 3 half-moves
3 Rc8 win in 3 half-moves
4 Kb7 win in 5 half-moves
5 Ka4 draw
6 Kaa6 draw
7 Kab5 draw
8 Kb4 draw
9 Kbb5 draw
10 Kc5 draw
11 Kc6 draw
12 Kc7 draw
13 Ra8 draw
14 Rb7 draw
15 Rd8 draw
16 Rh8 draw
17 Re8 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg8 loss in 2 half-moves