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

EGTB: win in 4 half-moves

# move score
1 Re1 win in 3 half-moves
2 R1a2 draw
3 R1a3 draw
4 R4a2 draw
5 R4a3 draw
6 Ra8 draw
7 Re4 draw
8 Rf4 draw
9 Ra5 loss in 2 half-moves
10 Ra6 loss in 2 half-moves
11 Ra7 loss in 2 half-moves
12 Rb1 loss in 2 half-moves
13 Rb4 loss in 2 half-moves
14 Rc1 loss in 2 half-moves
15 Rc4 loss in 2 half-moves
16 Rd1 loss in 2 half-moves
17 Rd4 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rg4 loss in 2 half-moves
21 Rh1 loss in 2 half-moves
22 Rh4 loss in 2 half-moves