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EGTB: win in 4 half-moves

# move score
1 Rc2 win in 3 half-moves
2 Rc3 draw
3 Rc4 draw
4 Rc8 draw
5 Re7 draw
6 Rf7 draw
7 Rg7 draw
8 Rh7 draw
9 Kb1 loss in 2 half-moves
10 Kb2 loss in 2 half-moves
11 Kc2 loss in 2 half-moves
12 Kcd1 loss in 2 half-moves
13 Kcd2 loss in 2 half-moves
14 Ke2 loss in 2 half-moves
15 Ked1 loss in 2 half-moves
16 Ked2 loss in 2 half-moves
17 Kf1 loss in 2 half-moves
18 Kf2 loss in 2 half-moves
19 Ra7 loss in 2 half-moves
20 Rb7 loss in 2 half-moves
21 Rc5 loss in 2 half-moves
22 Rc6 loss in 2 half-moves
23 Rd7 loss in 2 half-moves