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

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rc6 draw
3 Rf1 draw
4 Rf2 draw
5 Rf3 draw
6 Rf4 draw
7 Rg6 draw
8 Rh6 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 Rd6 loss in 2 half-moves
18 Re6 loss in 2 half-moves
19 Rf5 loss in 2 half-moves
20 Rf7 loss in 2 half-moves
21 Rf8 loss in 2 half-moves