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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb1 draw
3 Rb3 draw
4 Rb4 draw
5 Rb5 draw
6 Rc8 draw
7 Rd8 draw
8 Re8 draw
9 Rh8 draw
10 Ka2 loss in 2 half-moves
11 Kab1 loss in 2 half-moves
12 Kab2 loss in 2 half-moves
13 Kc2 loss in 2 half-moves
14 Kcb1 loss in 2 half-moves
15 Kcb2 loss in 2 half-moves
16 Kd1 loss in 2 half-moves
17 Kd2 loss in 2 half-moves
18 Ra8 loss in 2 half-moves
19 Rb6 loss in 2 half-moves
20 Rb7 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Rg8 loss in 2 half-moves