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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Ra3 win in 5 half-moves
3 Rc3 draw
4 Rd3 draw
5 Re3 draw
6 Rf2 draw
7 Rf7 draw
8 Rf8 draw
9 K5b5 loss in 2 half-moves
10 K5b6 loss in 2 half-moves
11 K6b5 loss in 2 half-moves
12 K6b6 loss in 2 half-moves
13 Ka4 loss in 2 half-moves
14 Ka7 loss in 2 half-moves
15 Kb4 loss in 2 half-moves
16 Kb7 loss in 2 half-moves
17 Rf1 loss in 2 half-moves
18 Rf4 loss in 2 half-moves
19 Rf5 loss in 2 half-moves
20 Rf6 loss in 2 half-moves
21 Rg3 loss in 2 half-moves
22 Rh3 loss in 2 half-moves