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 Rb6 win in 1 half-moves
3 Ra1 draw
4 Rb4 draw
5 Rb5 draw
6 Kb2 loss in 2 half-moves
7 Kcc2 loss in 2 half-moves
8 Kcd2 loss in 2 half-moves
9 Kdc2 loss in 2 half-moves
10 Kdd2 loss in 2 half-moves
11 Ke1 loss in 2 half-moves
12 Ke2 loss in 2 half-moves
13 Rb2 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rb8 loss in 2 half-moves