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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Rh7 win in 3 half-moves
3 g1=K draw
4 Ra7 draw
5 Rb1 draw
6 Rb2 draw
7 Rb3 draw
8 Rb4 draw
9 Rf7 draw
10 g1=B loss in 2 half-moves
11 g1=N loss in 2 half-moves
12 g1=Q loss in 2 half-moves
13 g1=R loss in 2 half-moves
14 Rb5 loss in 2 half-moves
15 Rb6 loss in 2 half-moves
16 Rc7 loss in 2 half-moves
17 Rd7 loss in 2 half-moves
18 Re7 loss in 2 half-moves
19 Rg7 loss in 2 half-moves