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EGTB: win in 4 half-moves

# move score
1 Ra7 win in 3 half-moves
2 Rb7 win in 3 half-moves
3 Ra2 draw
4 Raa8 draw
5 Rab1 draw
6 Rb2 draw
7 Rba8 draw
8 Rbb1 draw
9 Rc1 draw
10 Rc8 draw
11 Rd1 draw
12 Nb7 loss in 2 half-moves
13 Nc6 loss in 2 half-moves
14 Ne6 loss in 2 half-moves
15 Nf7 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra4 loss in 2 half-moves
18 Ra5 loss in 2 half-moves
19 Ra6 loss in 2 half-moves
20 Rb3 loss in 2 half-moves
21 Rb4 loss in 2 half-moves
22 Rb5 loss in 2 half-moves
23 Rb6 loss in 2 half-moves
24 Re1 loss in 2 half-moves
25 Rf1 loss in 2 half-moves
26 Rg1 loss in 2 half-moves
27 Rh1 loss in 2 half-moves