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 Rb8 win in 3 half-moves
4 Ka8 draw
5 Kb3 draw
6 Kb4 draw
7 Kb5 draw
8 Kb7 draw
9 Kb8 draw
10 Kc3 draw
11 Kd3 draw
12 Ra8 draw
13 Rc8 draw
14 Rd1 draw
15 Rh8 draw
16 Kc5 loss in 2 half-moves
17 Kd4 loss in 2 half-moves
18 Kd5 loss in 2 half-moves
19 Rd2 loss in 2 half-moves
20 Rd3 loss in 2 half-moves
21 Rd4 loss in 2 half-moves
22 Rd5 loss in 2 half-moves
23 Rd6 loss in 2 half-moves
24 Rd7 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