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

EGTB: win in 2 half-moves

# move score
1 Rb6 win in 1 half-moves
2 Rd8 win in 1 half-moves
3 Rb5 draw
4 Ka7 loss in 2 half-moves
5 Kb7 loss in 2 half-moves
6 Rb1 loss in 2 half-moves
7 Rb2 loss in 2 half-moves
8 Rb3 loss in 2 half-moves
9 Rb7 loss in 2 half-moves
10 Rc8 loss in 2 half-moves
11 Re8 loss in 2 half-moves
12 Rf8 loss in 2 half-moves
13 Rg8 loss in 2 half-moves
14 Rh8 loss in 2 half-moves
15 Rb4 loss in 1 half-moves