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

EGTB: win in 4 half-moves

# move score
1 Re4 win in 3 half-moves
2 Ra8 win in 5 half-moves
3 Rc4 win in 5 half-moves
4 Kd5 win in 7 half-moves
5 Kb5 draw
6 Rb4 draw
7 Rb5 draw
8 Rf4 draw
9 Kb4 loss in 2 half-moves
10 Kb6 loss in 2 half-moves
11 Kc4 loss in 2 half-moves
12 Kc6 loss in 2 half-moves
13 Kd6 loss in 2 half-moves
14 Ra1 loss in 2 half-moves
15 Ra2 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Ra7 loss in 2 half-moves
19 Rg4 loss in 2 half-moves
20 Rh4 loss in 2 half-moves
21 Kd4 loss in 1 half-moves
22 Rd4 loss in 1 half-moves