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

EGTB: win in 4 half-moves

# move score
1 R1a5 win in 3 half-moves
2 R8a7 win in 3 half-moves
3 Rc8 win in 3 half-moves
4 Re8 win in 3 half-moves
5 Rf8 win in 3 half-moves
6 R1a7 win in 21 half-moves
7 Kb1 draw
8 Kd1 draw
9 R1a4 draw
10 R1a6 draw
11 R8a4 draw
12 R8a5 draw
13 R8a6 draw
14 Kb2 loss in 2 half-moves
15 Kc2 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 R1a2 loss in 2 half-moves
18 R1a3 loss in 2 half-moves
19 R8a2 loss in 2 half-moves
20 R8a3 loss in 2 half-moves
21 Rb1 loss in 2 half-moves
22 Rb8 loss in 2 half-moves
23 Rd8 loss in 2 half-moves
24 Rg8 loss in 2 half-moves
25 Rh8 loss in 2 half-moves