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 Ra7 win in 5 half-moves
3 Rb5 draw
4 Nc4 loss in 2 half-moves
5 Nc6 loss in 2 half-moves
6 Nd3 loss in 2 half-moves
7 Nf3 loss in 2 half-moves
8 Nf7 loss in 2 half-moves
9 Ng4 loss in 2 half-moves
10 Ng6 loss in 2 half-moves
11 Rb1 loss in 2 half-moves
12 Rb2 loss in 2 half-moves
13 Rb3 loss in 2 half-moves
14 Rb4 loss in 2 half-moves
15 Rb6 loss in 2 half-moves
16 Rc7 loss in 2 half-moves
17 d8=B loss in 1 half-moves
18 d8=K loss in 1 half-moves
19 d8=N loss in 1 half-moves
20 d8=Q loss in 1 half-moves
21 d8=R loss in 1 half-moves