|  | 
| Basic take point with automatic redouble : 19.38% | Gammon value 
 : 67.5% |  
| Taker's gammon rate | 0% | 10% | 20% | 28% | 30% | 40% | 50% |  
| Take point with automatic redouble | 19.38% | 16.68% | 14.64% | 13.33% | 13.04% | 11.76% | 10.71% |  | Doubling window (without gammons) : 72.81% - 80.62% |  | 
 |