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EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 g1=K draw
3 Ra2 draw
4 Ra8 draw
5 Rb1 draw
6 Rbb8 draw
7 Rbc2 draw
8 Rc1 draw
9 Rc3 draw
10 Rcb8 draw
11 Rd2 draw
12 Rd8 draw
13 Rf2 draw
14 Rcc2 loss in 4 half-moves
15 g1=B loss in 2 half-moves
16 g1=N loss in 2 half-moves
17 g1=Q loss in 2 half-moves
18 g1=R loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rb5 loss in 2 half-moves
21 Rb6 loss in 2 half-moves
22 Rb7 loss in 2 half-moves
23 Rc4 loss in 2 half-moves
24 Rc5 loss in 2 half-moves
25 Rc6 loss in 2 half-moves
26 Rc7 loss in 2 half-moves
27 Re2 loss in 2 half-moves
28 Re8 loss in 2 half-moves
29 Rf8 loss in 2 half-moves
30 Rg8 loss in 2 half-moves
31 Rh8 loss in 2 half-moves