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

EGTB: win in 2 half-moves

# move score
1 Ka5 win in 1 half-moves
2 Ra8 draw
3 Rb1 draw
4 Rb2 draw
5 Rb3 draw
6 Rb5 draw
7 Rb7 draw
8 Rh8 loss in 6 half-moves
9 Ka7 loss in 2 half-moves
10 Kb6 loss in 2 half-moves
11 Kb7 loss in 2 half-moves
12 Rb4 loss in 2 half-moves
13 Rb6 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rg8 loss in 2 half-moves
18 Kb5 loss in 1 half-moves
19 Rc8 loss in 1 half-moves