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

EGTB: win in 2 half-moves

# move score
1 Rb3 win in 1 half-moves
2 Rb5 win in 1 half-moves
3 Rb6 win in 1 half-moves
4 Rd7 win in 1 half-moves
5 Ka8 draw
6 Kc8 draw
7 Rc7 draw
8 Rb1 loss in 2 half-moves
9 Rb2 loss in 2 half-moves
10 Rb4 loss in 2 half-moves
11 Re7 loss in 2 half-moves
12 Rf7 loss in 2 half-moves
13 Rg7 loss in 2 half-moves
14 Rh7 loss in 2 half-moves
15 Ka7 loss in 1 half-moves
16 Kc7 loss in 1 half-moves
17 Ra7 loss in 1 half-moves