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

EGTB: win in 4 half-moves

# move score
1 Ra4 win in 3 half-moves
2 Rb4 win in 3 half-moves
3 Rc4 draw
4 Rd4 draw
5 Re4 draw
6 Rf2 draw
7 Rf5 draw
8 Rf6 draw
9 Rf7 draw
10 K6b6 loss in 2 half-moves
11 K6b7 loss in 2 half-moves
12 K7b6 loss in 2 half-moves
13 K7b7 loss in 2 half-moves
14 Ka5 loss in 2 half-moves
15 Ka8 loss in 2 half-moves
16 Kb5 loss in 2 half-moves
17 Kb8 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rh4 loss in 2 half-moves