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

EGTB: win in 4 half-moves

# move score
1 Ka2 win in 3 half-moves
2 Ka3 win in 3 half-moves
3 Ra3 win in 3 half-moves
4 Rb3 win in 3 half-moves
5 Rf5 win in 3 half-moves
6 Rf6 win in 3 half-moves
7 Rf7 win in 3 half-moves
8 Ka1 draw
9 Ka5 draw
10 Ka7 draw
11 Kb1 draw
12 Kb3 draw
13 Kb5 draw
14 Kb6 draw
15 Kc1 draw
16 Kc2 draw
17 Kc3 draw
18 Rc3 draw
19 Rd3 draw
20 Re3 draw
21 Rf4 draw
22 Rf8 draw
23 Kb7 loss in 2 half-moves
24 Rf1 loss in 2 half-moves
25 Rf2 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rh3 loss in 2 half-moves