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

EGTB: win in 4 half-moves

# move score
1 Ka5 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Kb6 win in 3 half-moves
4 Rb4 win in 3 half-moves
5 Rc5 win in 3 half-moves
6 Ra4 win in 5 half-moves
7 Ka7 draw
8 Rc1 draw
9 Rc2 draw
10 Rc3 draw
11 Rd4 draw
12 Kb7 loss in 2 half-moves
13 Rc6 loss in 2 half-moves
14 Rc7 loss in 2 half-moves
15 Rc8 loss in 2 half-moves
16 Re4 loss in 2 half-moves
17 Rf4 loss in 2 half-moves
18 Rg4 loss in 2 half-moves
19 Rh4 loss in 2 half-moves