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 Ra8 draw
3 Rb1 draw
4 Rb2 draw
5 Rb3 draw
6 Rb5 draw
7 Rb6 draw
8 Rc8 draw
9 Rd8 draw
10 Re8 draw
11 Rf8 draw
12 Nb3 loss in 2 half-moves
13 Nc2 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rg8 loss in 1 half-moves
16 Rh8 loss in 1 half-moves