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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 R5h6 draw
3 R5h7 draw
4 R8h6 draw
5 R8h7 draw
6 Rb5 draw
7 Rg5 draw
8 Rg8 draw
9 Rh4 draw
10 Ra5 loss in 2 half-moves
11 Ra8 loss in 2 half-moves
12 Rc5 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd5 loss in 2 half-moves
15 Rd8 loss in 2 half-moves
16 Re5 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf5 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rh1 loss in 2 half-moves
21 Rh2 loss in 2 half-moves
22 Rh3 loss in 2 half-moves