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

EGTB: win in 4 half-moves

# move score
1 R1a3 win in 3 half-moves
2 R1a6 win in 3 half-moves
3 Rb7 win in 3 half-moves
4 Rc7 win in 3 half-moves
5 Rd7 win in 3 half-moves
6 R7a6 loss in 6 half-moves
7 Ra8 loss in 4 half-moves
8 Na3 loss in 2 half-moves
9 Nc3 loss in 2 half-moves
10 Nd2 loss in 2 half-moves
11 R1a2 loss in 2 half-moves
12 R1a4 loss in 2 half-moves
13 R1a5 loss in 2 half-moves
14 R7a2 loss in 2 half-moves
15 R7a3 loss in 2 half-moves
16 R7a4 loss in 2 half-moves
17 R7a5 loss in 2 half-moves
18 Re7 loss in 2 half-moves
19 Rf7 loss in 2 half-moves
20 Rg7 loss in 2 half-moves
21 Rh7 loss in 2 half-moves