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 K7b7 draw
3 K8b7 draw
4 Ra2 draw
5 Rb1 draw
6 Rb5 draw
7 Rb6 draw
8 Rb7 draw
9 Rb8 draw
10 Re2 draw
11 Rf2 draw
12 Rg2 draw
13 K7b8 loss in 2 half-moves
14 Ka6 loss in 2 half-moves
15 Kb6 loss in 2 half-moves
16 K8b8 loss in 1 half-moves
17 Rb4 loss in 1 half-moves
18 Rc2 loss in 1 half-moves
19 Rd2 loss in 1 half-moves
20 Rh2 loss in 1 half-moves