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 Ka2 draw
3 Kb2 draw
4 Kc1 draw
5 Kc2 draw
6 R1a4 draw
7 R1a5 draw
8 R6a2 draw
9 R6a3 draw
10 R6a4 draw
11 R6a5 draw
12 Ra7 draw
13 Ra8 draw
14 Rb6 draw
15 Rc6 draw
16 Rd6 draw
17 Re6 draw
18 Rf6 draw
19 R1a3 loss in 2 half-moves
20 Rg6 loss in 1 half-moves
21 Rh6 loss in 1 half-moves