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EGTB: win in 4 half-moves

# move score
1 a2 win in 3 half-moves
2 Kh2 draw
3 Rc2 draw
4 Rc3 draw
5 Rc4 draw
6 Rc7 draw
7 Re1 draw
8 Rg1 draw
9 Ra1 loss in 4 half-moves
10 Rh1 loss in 4 half-moves
11 Kg2 loss in 2 half-moves
12 Kg3 loss in 2 half-moves
13 Kg4 loss in 2 half-moves
14 Kh4 loss in 2 half-moves
15 Rb1 loss in 2 half-moves
16 Rc5 loss in 2 half-moves
17 Rc6 loss in 2 half-moves
18 Rc8 loss in 2 half-moves
19 Rd1 loss in 2 half-moves
20 Rf1 loss in 2 half-moves