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

EGTB: win in 4 half-moves

# move score
1 R1a4 win in 3 half-moves
2 Kb1 draw
3 Kb2 draw
4 Kc2 draw
5 Kd1 draw
6 Kd2 draw
7 R1a2 draw
8 R1a3 draw
9 R6a2 draw
10 R6a3 draw
11 R6a4 draw
12 Ra7 draw
13 Rb1 draw
14 Rb6 draw
15 Rc6 draw
16 Rd6 draw
17 Re6 draw
18 Rf6 draw
19 Rg6 draw
20 R1a5 loss in 2 half-moves
21 R6a5 loss in 2 half-moves
22 Ra8 loss in 2 half-moves
23 Rh6 loss in 2 half-moves