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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Kb7 draw
3 Kb8 draw
4 Kc7 draw
5 Rb1 draw
6 Rb3 draw
7 Rb8 draw
8 Rc2 draw
9 Rd2 draw
10 Kd7 loss in 4 half-moves
11 Kd8 loss in 4 half-moves
12 Ra2 loss in 4 half-moves
13 Re2 loss in 4 half-moves
14 Rb5 loss in 2 half-moves
15 Rb6 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Rg2 loss in 2 half-moves
18 Rh2 loss in 2 half-moves
19 Rf2 loss in 1 half-moves