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

EGTB: win in 8 half-moves

# move score
1 Rb6 win in 7 half-moves
2 Ka3 draw
3 Kaa5 draw
4 Kab4 draw
5 Kb6 draw
6 Kbb4 draw
7 Ra8 draw
8 Rb7 draw
9 Rg8 draw
10 Ka6 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Kba5 loss in 2 half-moves
13 Kc4 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Rc8 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves