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

EGTB: win in 4 half-moves

# move score
1 Rc2 win in 3 half-moves
2 Ra2 win in 7 half-moves
3 Rb2 win in 7 half-moves
4 Rd2 win in 7 half-moves
5 Re2 draw
6 Rf5 draw
7 Rf6 draw
8 Rf7 draw
9 Rf8 draw
10 Kaa2 loss in 2 half-moves
11 Kaa4 loss in 2 half-moves
12 Kab2 loss in 2 half-moves
13 Kab4 loss in 2 half-moves
14 Kba2 loss in 2 half-moves
15 Kba4 loss in 2 half-moves
16 Kbb2 loss in 2 half-moves
17 Kbb4 loss in 2 half-moves
18 Kc2 loss in 2 half-moves
19 Kc3 loss in 2 half-moves
20 Kc4 loss in 2 half-moves
21 Rf1 loss in 2 half-moves
22 Rf3 loss in 2 half-moves
23 Rf4 loss in 2 half-moves
24 Rg2 loss in 2 half-moves
25 Rh2 loss in 2 half-moves