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 Kb2 draw
3 Ra1 draw
4 Rb5 draw
5 Rb6 draw
6 Rc1 draw
7 Rd1 draw
8 Re1 draw
9 Rf1 draw
10 Rg1 draw
11 Rh1 draw
12 Ka1 loss in 2 half-moves
13 Ka3 loss in 2 half-moves
14 Kb3 loss in 2 half-moves
15 Rb2 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Rb8 loss in 2 half-moves