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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Ra3 win in 5 half-moves
3 Rd5 win in 5 half-moves
4 Kb6 win in 7 half-moves
5 Kb7 win in 7 half-moves
6 Ka5 draw
7 Ka7 draw
8 Kb5 draw
9 Rc3 draw
10 Rd1 draw
11 Rd2 draw
12 Rd4 draw
13 Re3 draw
14 Rd6 loss in 2 half-moves
15 Rd7 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Rf3 loss in 2 half-moves
18 Rg3 loss in 2 half-moves
19 Rh3 loss in 2 half-moves