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 K6b6 draw
3 K6d6 draw
4 K6d7 draw
5 K7b6 draw
6 K7d6 draw
7 K7d7 draw
8 Kb5 draw
9 Kb8 draw
10 Kc5 draw
11 Kc8 draw
12 Kd5 draw
13 Kd8 draw
14 Ra7 draw
15 Rb1 draw
16 Rb2 draw
17 Rb6 draw
18 Rb8 draw
19 Rb3 loss in 1 half-moves
20 Rb5 loss in 1 half-moves