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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rb7 draw
3 Rb8 draw
4 Rc2 draw
5 Rf2 draw
6 Rg2 draw
7 Rh2 draw
8 g8=B loss in 2 half-moves
9 g8=K loss in 2 half-moves
10 g8=N loss in 2 half-moves
11 g8=Q loss in 2 half-moves
12 g8=R loss in 2 half-moves
13 Nd6 loss in 2 half-moves
14 Nd8 loss in 2 half-moves
15 Ne5 loss in 2 half-moves
16 Ng5 loss in 2 half-moves
17 Nh6 loss in 2 half-moves
18 Nh8 loss in 2 half-moves
19 Ra2 loss in 2 half-moves
20 Rb1 loss in 2 half-moves
21 Rb3 loss in 2 half-moves
22 Rb4 loss in 2 half-moves
23 Rb5 loss in 2 half-moves
24 Rd2 loss in 2 half-moves
25 Re2 loss in 2 half-moves