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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ka2 draw
3 Ka4 draw
4 Ka6 draw
5 Ka8 draw
6 Kb2 draw
7 Kb3 draw
8 Kb4 draw
9 Kb6 draw
10 Kb7 draw
11 Kb8 draw
12 Ra8 draw
13 Rc1 draw
14 Rd8 draw
15 Re8 draw
16 Rc2 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rc4 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rc6 loss in 2 half-moves
21 Rc7 loss in 2 half-moves
22 Rf8 loss in 2 half-moves
23 Rg8 loss in 2 half-moves
24 Rh8 loss in 2 half-moves