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

EGTB: win in 4 half-moves

# move score
1 Re7 win in 3 half-moves
2 Re8 win in 3 half-moves
3 Kaa7 draw
4 Kab7 draw
5 Kba7 draw
6 Kbb7 draw
7 Kc7 draw
8 Kc8 draw
9 Ra3 draw
10 Rb3 draw
11 Rc3 draw
12 Rd3 draw
13 Re4 draw
14 Re5 draw
15 Re6 draw
16 Rf3 draw
17 Re1 loss in 2 half-moves
18 Re2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves
20 Rh3 loss in 2 half-moves