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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 g1=B draw
3 g1=K draw
4 g1=N draw
5 Ra2 draw
6 Ra3 draw
7 Rb1 draw
8 Rb5 draw
9 Rbb2 draw
10 Rbc3 draw
11 Rc1 draw
12 Rc4 draw
13 Rc5 draw
14 Rcb2 draw
15 Rcc3 draw
16 g1=Q loss in 2 half-moves
17 g1=R loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rb8 loss in 2 half-moves
21 Rc6 loss in 2 half-moves
22 Rc7 loss in 2 half-moves
23 Rc8 loss in 2 half-moves
24 Rd2 loss in 2 half-moves
25 Rd3 loss in 2 half-moves
26 Re2 loss in 2 half-moves
27 Re3 loss in 2 half-moves
28 Rf2 loss in 2 half-moves
29 Rf3 loss in 2 half-moves
30 Rg3 loss in 2 half-moves
31 Rh3 loss in 2 half-moves