3.51 The challenge must be met if the rating system is to succeed, if it is to produce ratings that will satisfy the players and the users of the rating list.
| Player | Rounds | Elo | SRM |
|---|---|---|---|
| ruifeng | 2 | 1779 | 1381 |
| Rating | perf | err | err2 | |ΔR| | ΔR min | ΔR max | max | R | rank |
|---|---|---|---|---|---|---|---|---|---|
| SRM | 0.666 | 0.666 | 0.666 | 181.0 | 181 | 181 | 1381 | 1381 | 1620 |
| SRMFix | 0.878 | 0.878 | 0.878 | 195.9 | 196 | 196 | 1396 | 1396 | 3977 |
| initial | 0.886 | 0.886 | 0.886 | 106.7 | 107 | 107 | 1307 | 1307 | 4608 |
| EloSRM | 0.908 | 0.908 | 0.908 | 251.1 | 251 | 251 | 1779 | 1779 | 4277 |
| # | date | round | division | rank | seed | perf | Δ Elo | Elo new | Elo rank | Δ SRM | SRM new | SRM rank |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 2008-05-01 | SRM 400 | 1 | 348 | ||||||||
| 1 | 2007-10-09 | College Tour SRM 370 | 1 | 72 | 135.12 | 0.91 | 251 | 1779 | 4277 | 181 | 1381 | 1620 |