New York m
New York 1866
| Date | Players | Type | Elo Average | Games | Rounds |
| Mar 15, 1866 | 2 | Match | 6 | 6 |
| Name | ELO | Points | ||
| Mackenzie, George Henry | 5.5 | |||
| Reichhelm, Gustavus Charles | 0.5 | |||
New York m Games
| White | Black | Result | Round | Date | Opening | View |
| Mackenzie, G | Reichhelm, G | ½-½  |
1 | Mar 15, 1866 | C84 Ruy Lopez, closed defence |   |
| Reichhelm, G | Mackenzie, G | 0-1 |
2 | Mar 16, 1866 | C51 Evans gambit declined |   |
| Mackenzie, G | Reichhelm, G | 1-0 |
3 | Mar 16, 1866 | C67 Ruy Lopez, Berlin defence, open variation | |
| Reichhelm, G | Mackenzie, G | 0-1 |
4 | Mar 17, 1866 | C84 Ruy Lopez, closed defence | |
| Mackenzie, G | Reichhelm, G | 1-0 |
5 | Mar 19, 1866 | C67 Ruy Lopez, Berlin defence, open variation | |
| Reichhelm, G | Mackenzie, G | 0-1 |
6 | Mar 20, 1866 | C51 Evans gambit declined | |