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

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Ka7 win in 5 half-moves
3 Rd7 win in 5 half-moves
4 Rd8 win in 5 half-moves
5 Ka2 draw
6 Ka4 draw
7 Kb2 draw
8 Kb3 draw
9 Kb4 draw
10 Kb7 draw
11 Kb8 draw
12 Ra6 draw
13 Rc6 draw
14 Rd1 draw
15 Rd5 draw
16 Re6 draw
17 Rf6 draw
18 Rd2 loss in 2 half-moves
19 Rd3 loss in 2 half-moves
20 Rd4 loss in 2 half-moves
21 Rg6 loss in 2 half-moves
22 Rh6 loss in 2 half-moves