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 Kc2 draw
3 Rb1 draw
4 Rb2 draw
5 Rb3 loss in 16 half-moves
6 Kb2 loss in 6 half-moves
7 Kb3 loss in 6 half-moves
8 Kd2 loss in 6 half-moves
9 Rc4 loss in 6 half-moves
10 Ra4 loss in 4 half-moves
11 Kc4 loss in 2 half-moves
12 Kd3 loss in 2 half-moves
13 Kd4 loss in 2 half-moves
14 Rb5 loss in 2 half-moves
15 Rb6 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Rd4 loss in 2 half-moves
18 Re4 loss in 2 half-moves
19 Rf4 loss in 2 half-moves
20 Rg4 loss in 1 half-moves
21 Rh4 loss in 1 half-moves