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

EGTB: win in 2 half-moves

# move score
1 Ka3 win in 1 half-moves
2 Rb3 draw
3 Ra8 loss in 4 half-moves
4 Rb1 loss in 4 half-moves
5 Rb6 loss in 4 half-moves
6 Rb7 loss in 4 half-moves
7 Ka5 loss in 2 half-moves
8 Kb4 loss in 2 half-moves
9 Kb5 loss in 2 half-moves
10 Rb2 loss in 2 half-moves
11 Rb4 loss in 2 half-moves
12 Rb5 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rg8 loss in 2 half-moves
17 Rh8 loss in 2 half-moves
18 Kb3 loss in 1 half-moves
19 Rf8 loss in 1 half-moves