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 Kc1 draw
3 Kc3 draw
4 Kd2 draw
5 Kd3 draw
6 Ra1 draw
7 Rf1 loss in 20 half-moves
8 Kb2 loss in 18 half-moves
9 Rb2 loss in 18 half-moves
10 Rb4 loss in 18 half-moves
11 Rc1 loss in 18 half-moves
12 Rg1 loss in 18 half-moves
13 Kd1 loss in 8 half-moves
14 Kb3 loss in 4 half-moves
15 Rb3 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rb6 loss in 2 half-moves
18 Rb7 loss in 2 half-moves
19 Rd1 loss in 2 half-moves
20 Re1 loss in 2 half-moves
21 Rh1 loss in 2 half-moves