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 Ka2 draw
3 Kb2 draw
4 Kc1 draw
5 Kc2 draw
6 Rb2 draw
7 Rb7 draw
8 Rc4 draw
9 Rd4 draw
10 Rg4 draw
11 Rh4 draw
12 Ka1 loss in 8 half-moves
13 Ra4 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb5 loss in 1 half-moves
16 Rb6 loss in 1 half-moves
17 Re4 loss in 1 half-moves
18 Rf4 loss in 1 half-moves