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

EGTB: win in 2 half-moves

# move score
1 Rc4 win in 1 half-moves
2 Ra4 draw
3 Rb4 draw
4 Rd4 draw
5 Rg3 draw
6 Rg5 draw
7 Rg6 draw
8 Rg7 draw
9 Rh4 draw
10 Ka4 loss in 2 half-moves
11 Ka6 loss in 2 half-moves
12 Kb4 loss in 2 half-moves
13 Kb5 loss in 2 half-moves
14 Kb6 loss in 2 half-moves
15 Re4 loss in 2 half-moves
16 Rf4 loss in 2 half-moves
17 Rg1 loss in 2 half-moves
18 Rg2 loss in 2 half-moves
19 Rg8 loss in 2 half-moves