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 Ra2 draw
3 Rb5 draw
4 Rb6 draw
5 Kb1 loss in 2 half-moves
6 Kb3 loss in 2 half-moves
7 Kcc1 loss in 2 half-moves
8 Kcc3 loss in 2 half-moves
9 Kcd1 loss in 2 half-moves
10 Kcd3 loss in 2 half-moves
11 Kdc1 loss in 2 half-moves
12 Kdc3 loss in 2 half-moves
13 Kdd1 loss in 2 half-moves
14 Kdd3 loss in 2 half-moves
15 Ke1 loss in 2 half-moves
16 Ke2 loss in 2 half-moves
17 Ke3 loss in 2 half-moves
18 Rb1 loss in 2 half-moves
19 Rb3 loss in 2 half-moves
20 Rb7 loss in 2 half-moves
21 Rb8 loss in 2 half-moves