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