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

EGTB: win in 2 half-moves

# move score
1 Rb2 win in 1 half-moves
2 Rd7 win in 1 half-moves
3 Rb4 draw
4 K4b5 loss in 2 half-moves
5 K5b5 loss in 2 half-moves
6 Ka3 loss in 2 half-moves
7 Ka6 loss in 2 half-moves
8 Kb6 loss in 2 half-moves
9 Ra7 loss in 2 half-moves
10 Rb1 loss in 2 half-moves
11 Rb5 loss in 2 half-moves
12 Rb6 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rc7 loss in 2 half-moves
15 Re7 loss in 2 half-moves
16 Rf7 loss in 2 half-moves
17 Rg7 loss in 2 half-moves
18 Rh7 loss in 2 half-moves
19 K4b4 loss in 1 half-moves
20 K5b4 loss in 1 half-moves
21 Kb3 loss in 1 half-moves
22 Rb3 loss in 1 half-moves