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 Ra4 win in 7 half-moves
3 Rc4 win in 7 half-moves
4 Rd4 draw
5 Rh5 draw
6 Rh6 draw
7 Rh7 draw
8 Rh8 draw
9 Kb4 loss in 2 half-moves
10 Kb5 loss in 2 half-moves
11 Kb6 loss in 2 half-moves
12 Kcc4 loss in 2 half-moves
13 Kcc6 loss in 2 half-moves
14 Kcd4 loss in 2 half-moves
15 Kcd6 loss in 2 half-moves
16 Kdc4 loss in 2 half-moves
17 Kdc6 loss in 2 half-moves
18 Kdd4 loss in 2 half-moves
19 Kdd6 loss in 2 half-moves
20 Ke4 loss in 2 half-moves
21 Ke5 loss in 2 half-moves
22 Ke6 loss in 2 half-moves
23 Re4 loss in 2 half-moves
24 Rf4 loss in 2 half-moves
25 Rg4 loss in 2 half-moves
26 Rh1 loss in 2 half-moves
27 Rh2 loss in 2 half-moves
28 Rh3 loss in 2 half-moves