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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 Ka1 draw
3 Ka3 draw
4 Ka4 draw
5 Ka5 draw
6 Ka6 draw
7 Kb1 draw
8 Kb2 draw
9 Kb3 draw
10 Kb4 draw
11 Kb6 draw
12 Rb8 draw
13 Rc1 draw
14 Rc2 draw
15 Rc3 draw
16 Rc7 draw
17 Rd8 draw
18 Rh8 draw
19 Kc4 loss in 2 half-moves
20 Kc5 loss in 2 half-moves
21 Kc6 loss in 2 half-moves
22 Rc4 loss in 2 half-moves
23 Rc5 loss in 2 half-moves
24 Rc6 loss in 2 half-moves
25 Re8 loss in 2 half-moves
26 Rf8 loss in 2 half-moves
27 Rg8 loss in 2 half-moves