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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ra4 draw
3 Rb3 draw
4 Rb6 draw
5 Ke7 loss in 2 half-moves
6 Ke8 loss in 2 half-moves
7 Kf7 loss in 2 half-moves
8 Kg7 loss in 2 half-moves
9 Kg8 loss in 2 half-moves
10 Rb1 loss in 2 half-moves
11 Rb2 loss in 2 half-moves
12 Rb5 loss in 2 half-moves
13 Rb7 loss in 2 half-moves
14 Rc4 loss in 2 half-moves
15 Rd4 loss in 2 half-moves
16 Rf4 loss in 2 half-moves
17 Rg4 loss in 2 half-moves
18 Rh4 loss in 2 half-moves
19 Re4 loss in 1 half-moves