Polish Opening: Zukertort System
White
Rating Group
Elo gain/loss
Game count
All
0.28
956
<1000
3.28
35
1000-1500
1.37
164
1500-2000
0.39
395
2000+
-0.62
362
Black
Rating Group
Elo gain/loss
Count
All
-0.28
956
<1000
2.52
36
1000-1500
0.69
149
1500-2000
-0.05
399
2000+
-1.19
372