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 Rc5 win in 1 half-moves
3 Rb1 draw
4 Rb2 draw
5 Ka1 loss in 2 half-moves
6 Ka3 loss in 2 half-moves
7 Kb3 loss in 2 half-moves
8 Ra5 loss in 2 half-moves
9 Rb3 loss in 2 half-moves
10 Rb6 loss in 2 half-moves
11 Rb7 loss in 2 half-moves
12 Rb8 loss in 2 half-moves
13 Rd5 loss in 2 half-moves
14 Re5 loss in 2 half-moves
15 Rf5 loss in 2 half-moves
16 Rg5 loss in 2 half-moves
17 Rh5 loss in 2 half-moves
18 Kb1 loss in 1 half-moves
19 Kb2 loss in 1 half-moves