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 Ka5 draw
3 Ka6 draw
4 Kb5 draw
5 Kb7 draw
6 Kc5 draw
7 Ra1 draw
8 Rb2 draw
9 Rb3 draw
10 Rb5 draw
11 Rc1 draw
12 Ka7 loss in 6 half-moves
13 Kc6 loss in 2 half-moves
14 Kc7 loss in 2 half-moves
15 Rd1 loss in 2 half-moves
16 Re1 loss in 2 half-moves
17 Rg1 loss in 2 half-moves
18 Rh1 loss in 2 half-moves
19 Rf1 loss in 1 half-moves