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

EGTB: win in 2 half-moves

# move score
1 Ka2 win in 1 half-moves
2 Ra8 draw
3 Rb2 draw
4 Rb4 draw
5 Rb5 draw
6 Rb6 draw
7 Re8 draw
8 Rf8 draw
9 Rg8 draw
10 Kb1 loss in 2 half-moves
11 Kg7 loss in 2 half-moves
12 Kg8 loss in 2 half-moves
13 Kh7 loss in 2 half-moves
14 Rb1 loss in 2 half-moves
15 Rb3 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Rc8 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Kb2 loss in 1 half-moves