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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Ra4 win in 5 half-moves
3 d8=K draw
4 Rc4 draw
5 Rd2 draw
6 Re4 draw
7 Rf4 draw
8 d8=B loss in 2 half-moves
9 d8=N loss in 2 half-moves
10 d8=Q loss in 2 half-moves
11 d8=R loss in 2 half-moves
12 Rd1 loss in 2 half-moves
13 Rd3 loss in 2 half-moves
14 Rd5 loss in 2 half-moves
15 Rd6 loss in 2 half-moves
16 Rg4 loss in 2 half-moves
17 Rh4 loss in 2 half-moves