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

EGTB: win in 4 half-moves

# move score
1 R1b4 win in 3 half-moves
2 R1b3 win in 7 half-moves
3 R1b2 draw
4 R6b2 draw
5 R6b3 draw
6 R6b4 draw
7 Ra1 draw
8 Ra6 draw
9 Rf6 draw
10 R1b5 loss in 2 half-moves
11 R6b5 loss in 2 half-moves
12 Rb7 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rc1 loss in 2 half-moves
15 Rc6 loss in 2 half-moves
16 Rd1 loss in 2 half-moves
17 Rd6 loss in 2 half-moves
18 Re1 loss in 2 half-moves
19 Re6 loss in 2 half-moves
20 Rf1 loss in 2 half-moves
21 Rg1 loss in 2 half-moves
22 Rg6 loss in 2 half-moves
23 Rh1 loss in 2 half-moves
24 Rh6 loss in 2 half-moves