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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Rh8 draw
3 Ka1 loss in 2 half-moves
4 Ka2 loss in 2 half-moves
5 Ka3 loss in 2 half-moves
6 Kb1 loss in 2 half-moves
7 Kb3 loss in 2 half-moves
8 Kbc3 loss in 2 half-moves
9 Kc1 loss in 2 half-moves
10 Kc2 loss in 2 half-moves
11 Kc4 loss in 2 half-moves
12 Kc5 loss in 2 half-moves
13 Kd3 loss in 2 half-moves
14 Kd5 loss in 2 half-moves
15 Kdc3 loss in 2 half-moves
16 Ke3 loss in 2 half-moves
17 Ke4 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Ra8 loss in 2 half-moves
20 Rb3 loss in 2 half-moves
21 Rb5 loss in 2 half-moves
22 Rb6 loss in 2 half-moves
23 Rb7 loss in 2 half-moves
24 Rc8 loss in 2 half-moves
25 Rd8 loss in 2 half-moves
26 Re8 loss in 2 half-moves
27 Rf8 loss in 2 half-moves
28 Rg8 loss in 2 half-moves