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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Ka3 draw
3 Ka5 draw
4 Ka6 draw
5 Ka8 draw
6 Kb3 draw
7 Ra2 draw
8 Rb1 draw
9 Rb4 draw
10 Rb8 draw
11 Rf2 draw
12 Kb4 loss in 2 half-moves
13 Kb5 loss in 2 half-moves
14 Kb6 loss in 2 half-moves
15 Kb7 loss in 2 half-moves
16 Kb8 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rc2 loss in 2 half-moves
21 Rd2 loss in 2 half-moves
22 Re2 loss in 2 half-moves
23 Rg2 loss in 2 half-moves
24 Rh2 loss in 2 half-moves