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EGTB: win in 4 half-moves

# move score
1 Rc8 win in 3 half-moves
2 f8=K draw
3 f8=N draw
4 Ra5 draw
5 Rb5 draw
6 Rd5 draw
7 Rh5 draw
8 Rc1 loss in 4 half-moves
9 Rc6 loss in 4 half-moves
10 Rc7 loss in 4 half-moves
11 f8=B loss in 2 half-moves
12 f8=Q loss in 2 half-moves
13 f8=R loss in 2 half-moves
14 Rc2 loss in 2 half-moves
15 Rc3 loss in 2 half-moves
16 Rc4 loss in 2 half-moves
17 Re5 loss in 2 half-moves
18 Rf5 loss in 2 half-moves
19 Rg5 loss in 2 half-moves