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 Re4 win in 1 half-moves
3 Rf4 win in 1 half-moves
4 Rg4 win in 1 half-moves
5 Rh4 win in 1 half-moves
6 Rb1 draw
7 Rb2 draw
8 Rc4 draw
9 Rd4 draw
10 Kb5 loss in 2 half-moves
11 Kb6 loss in 2 half-moves
12 Kc6 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Kd6 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Kc4 loss in 1 half-moves
21 Kd4 loss in 1 half-moves