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

EGTB: win in 4 half-moves

# move score
1 K5b6 win in 3 half-moves
2 K7b6 win in 3 half-moves
3 Kb7 win in 3 half-moves
4 Rb8 win in 3 half-moves
5 K5a6 win in 7 half-moves
6 Ka4 win in 7 half-moves
7 Ra8 win in 9 half-moves
8 Rg8 win in 11 half-moves
9 Rh8 win in 11 half-moves
10 K7a6 draw
11 Ka8 draw
12 Kb8 draw
13 Rc1 draw
14 Rc6 draw
15 Rc7 draw
16 Kb4 loss in 2 half-moves
17 Kb5 loss in 2 half-moves
18 Rc2 loss in 2 half-moves
19 Rc3 loss in 2 half-moves
20 Rc4 loss in 2 half-moves
21 Rc5 loss in 2 half-moves
22 Rd8 loss in 2 half-moves
23 Re8 loss in 2 half-moves
24 Rf8 loss in 2 half-moves