Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kb5 draw
3 Ra4 draw
4 Rb6 draw
5 Rb7 draw
6 Rb1 loss in 12 half-moves
7 Rb2 loss in 12 half-moves
8 Rb3 loss in 12 half-moves
9 Re4 loss in 6 half-moves
10 Ka5 loss in 2 half-moves
11 Ka7 loss in 2 half-moves
12 Rb5 loss in 2 half-moves
13 Rc4 loss in 2 half-moves
14 Rd4 loss in 2 half-moves
15 Rf4 loss in 2 half-moves
16 Rg4 loss in 2 half-moves
17 Rh4 loss in 2 half-moves
18 Kb6 loss in 1 half-moves
19 Kb7 loss in 1 half-moves