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

EGTB: win in 4 half-moves

# move score
1 R1a2 win in 3 half-moves
2 Rb1 win in 3 half-moves
3 Rb3 win in 3 half-moves
4 Rc1 win in 3 half-moves
5 Rc3 win in 3 half-moves
6 Ka7 draw
7 Kb7 draw
8 Kb8 draw
9 R3a2 draw
10 Ra4 draw
11 Rd1 draw
12 Rd3 draw
13 Re1 draw
14 Re3 draw
15 Rf1 draw
16 Rf3 draw
17 Ra5 loss in 2 half-moves
18 Ra6 loss in 2 half-moves
19 Ra7 loss in 2 half-moves
20 Rg1 loss in 2 half-moves
21 Rg3 loss in 2 half-moves
22 Rh1 loss in 2 half-moves
23 Rh3 loss in 2 half-moves