Bird Opening: Horsefly Defense
White
Rating Group
Elo gain/loss
Game count
All
0.67
1,110
<1000
1.29
81
1000-1500
1.35
142
1500-2000
0.65
355
2000+
0.41
535
Black
Rating Group
Elo gain/loss
Count
All
-0.67
1,110
<1000
2.73
83
1000-1500
1.62
138
1500-2000
0.14
327
2000+
-2.2
565