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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 Rf7 win in 1 half-moves
3 K5b5 loss in 2 half-moves
4 K5b6 loss in 2 half-moves
5 K6b5 loss in 2 half-moves
6 K6b6 loss in 2 half-moves
7 Ka4 loss in 2 half-moves
8 Ka7 loss in 2 half-moves
9 Kb4 loss in 2 half-moves
10 Ra7 loss in 2 half-moves
11 Rb2 loss in 2 half-moves
12 Rb3 loss in 2 half-moves
13 Rb4 loss in 2 half-moves
14 Rb5 loss in 2 half-moves
15 Rb6 loss in 2 half-moves
16 Rb8 loss in 2 half-moves
17 Rc7 loss in 2 half-moves
18 Rd7 loss in 2 half-moves
19 Re7 loss in 2 half-moves
20 Rg7 loss in 2 half-moves
21 Rh7 loss in 2 half-moves