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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Kd3 draw
3 Ke1 draw
4 Ke2 draw
5 Ke3 draw
6 Rc4 draw
7 Rd4 draw
8 Re4 draw
9 Rg4 draw
10 Rh4 draw
11 Rf1 loss in 6 half-moves
12 Kd1 loss in 4 half-moves
13 Rf2 loss in 4 half-moves
14 Kc1 loss in 2 half-moves
15 Kc2 loss in 2 half-moves
16 Kc3 loss in 2 half-moves
17 Rf3 loss in 2 half-moves
18 Rf5 loss in 2 half-moves
19 Rf6 loss in 2 half-moves
20 Rf7 loss in 2 half-moves
21 Ra4 loss in 1 half-moves
22 Rf8 loss in 1 half-moves