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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Nf7 draw
3 Ra2 draw
4 Rb1 draw
5 Rc2 draw
6 Ng6 loss in 2 half-moves
7 Rb3 loss in 2 half-moves
8 Rb4 loss in 2 half-moves
9 Rb5 loss in 2 half-moves
10 Rb6 loss in 2 half-moves
11 Rb7 loss in 2 half-moves
12 Rd2 loss in 2 half-moves
13 Re2 loss in 2 half-moves
14 Rf2 loss in 2 half-moves
15 Rg2 loss in 2 half-moves
16 Rh2 loss in 2 half-moves