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

EGTB: win in 4 half-moves

# move score
1 Kh2 win in 3 half-moves
2 Kd4 win in 5 half-moves
3 Rd4 win in 5 half-moves
4 Rc1 win in 7 half-moves
5 Rc2 win in 7 half-moves
6 Kd3 draw
7 Ke3 draw
8 Kf3 draw
9 Kf4 draw
10 Kg1 draw
11 Kg2 draw
12 Ra4 draw
13 Rb4 draw
14 Rc3 draw
15 Kd5 loss in 2 half-moves
16 Ke5 loss in 2 half-moves
17 Kf5 loss in 2 half-moves
18 Rc5 loss in 2 half-moves
19 Rc6 loss in 2 half-moves
20 Rc7 loss in 2 half-moves
21 Rc8 loss in 2 half-moves