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

EGTB: win in 4 half-moves

# move score
1 Re1 win in 3 half-moves
2 Rd2 draw
3 Rd3 draw
4 Rd5 draw
5 Rd6 draw
6 Rdd1 draw
7 Re4 draw
8 Rg4 draw
9 Rgd1 loss in 4 half-moves
10 Ra1 loss in 2 half-moves
11 Ra4 loss in 2 half-moves
12 Rb1 loss in 2 half-moves
13 Rb4 loss in 2 half-moves
14 Rc1 loss in 2 half-moves
15 Rc4 loss in 2 half-moves
16 Rd7 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rf4 loss in 2 half-moves
20 Rh1 loss in 2 half-moves
21 Rh4 loss in 2 half-moves