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

EGTB: win in 2 half-moves

# move score
1 Rb5 win in 1 half-moves
2 Kb3 draw
3 Kc2 draw
4 Kd2 draw
5 Kd3 draw
6 Ra2 draw
7 Rb3 draw
8 Rb4 draw
9 Rb6 draw
10 Rb7 draw
11 Rb8 draw
12 Rc2 draw
13 Rd2 draw
14 Re2 draw
15 Rf2 draw
16 Rg2 draw
17 Rh2 draw
18 Kb4 loss in 2 half-moves
19 Kc4 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Rb1 loss in 2 half-moves