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 K6b7 draw
3 K6d6 draw
4 K6d7 draw
5 K7b7 draw
6 K7d6 draw
7 K7d7 draw
8 Kb5 draw
9 Kc5 draw
10 Ra6 draw
11 Rb1 draw
12 Rb5 draw
13 Rb7 draw
14 Rb8 draw
15 Kb8 loss in 1 half-moves
16 Kc8 loss in 1 half-moves
17 Kd5 loss in 1 half-moves
18 Kd8 loss in 1 half-moves
19 Rb2 loss in 1 half-moves
20 Rb4 loss in 1 half-moves