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

EGTB: win in 4 half-moves

# move score
1 Rc7 win in 3 half-moves
2 Rc1 draw
3 Rc5 draw
4 Rc6 draw
5 Rd4 draw
6 Re4 draw
7 Rf4 draw
8 Rh4 draw
9 Kb7 loss in 2 half-moves
10 Kb8 loss in 2 half-moves
11 Kcc7 loss in 2 half-moves
12 Kcd7 loss in 2 half-moves
13 Kdc7 loss in 2 half-moves
14 Kdd7 loss in 2 half-moves
15 Ke7 loss in 2 half-moves
16 Ke8 loss in 2 half-moves
17 Ra4 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rc2 loss in 2 half-moves
20 Rc3 loss in 2 half-moves
21 Rg4 loss in 2 half-moves