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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 K1b1 draw
3 K2b1 draw
4 Ka3 draw
5 Ra8 draw
6 Rb2 draw
7 Rb6 draw
8 Rb7 draw
9 Rh8 draw
10 K1b2 loss in 2 half-moves
11 K2b2 loss in 2 half-moves
12 Kb3 loss in 2 half-moves
13 Rb3 loss in 2 half-moves
14 Rb4 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rc8 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves