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EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Ra7 draw
3 Ra8 draw
4 Rb6 draw
5 Rbb8 draw
6 Rc2 draw
7 Rc6 draw
8 Rcb8 draw
9 Rcc7 draw
10 Rd7 draw
11 Rd8 draw
12 Rh7 draw
13 Rh8 draw
14 Rbc7 loss in 4 half-moves
15 Rb1 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rc1 loss in 2 half-moves
20 Rc3 loss in 2 half-moves
21 Rc4 loss in 2 half-moves
22 Rc5 loss in 2 half-moves
23 Re7 loss in 2 half-moves
24 Re8 loss in 2 half-moves
25 Rf7 loss in 2 half-moves
26 Rf8 loss in 2 half-moves
27 Rg7 loss in 2 half-moves
28 Rg8 loss in 2 half-moves