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

EGTB: win in 4 half-moves

# move score
1 Ka6 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Kb5 win in 5 half-moves
4 Rb7 win in 9 half-moves
5 Ra7 win in 15 half-moves
6 Rc8 win in 31 half-moves
7 Rc6 win in 33 half-moves
8 Ka4 draw
9 Kb4 draw
10 Kd7 draw
11 Kd8 draw
12 Ke7 draw
13 Kf7 draw
14 Kf8 draw
15 Rc3 draw
16 Rc4 draw
17 Rc5 draw
18 Rd7 draw
19 Rh7 draw
20 Rc1 loss in 2 half-moves
21 Rc2 loss in 2 half-moves
22 Re7 loss in 2 half-moves
23 Rf7 loss in 2 half-moves
24 Rg7 loss in 2 half-moves