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 Rb3 draw
3 Ka1 loss in 24 half-moves
4 Ka2 loss in 24 half-moves
5 Ka3 loss in 24 half-moves
6 Ra5 loss in 24 half-moves
7 Rb8 loss in 24 half-moves
8 Kb1 loss in 20 half-moves
9 Kc2 loss in 20 half-moves
10 Kc1 loss in 10 half-moves
11 Kb3 loss in 2 half-moves
12 Kc3 loss in 2 half-moves
13 Rb6 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rc5 loss in 2 half-moves
16 Rd5 loss in 2 half-moves
17 Re5 loss in 2 half-moves
18 Rf5 loss in 1 half-moves
19 Rg5 loss in 1 half-moves
20 Rh5 loss in 1 half-moves