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 |
|---|---|---|---|
| zhangchen | 2 | 1951 | 1293 |
| Rating | perf | err | err2 | |ΔR| | ΔR min | ΔR max | max | R | rank |
|---|---|---|---|---|---|---|---|---|---|
| Odd | 0.976 | 0.976 | 0.988 | 212.8 | 187 | 238 | 1833 | 1833 | 3935 |
| EloSRM | 1.004 | 1.004 | 1.022 | 211.7 | 192 | 231 | 1951 | 1951 | 3883 |
| SRMFix | 1.017 | 1.017 | 1.044 | 183.0 | 176 | 190 | 1566 | 1566 | 3413 |
| SRM | 1.028 | 1.028 | 1.125 | 111.5 | -65 | 158 | 1358 | 1293 | 2550 |
| initial | 1.206 | 1.206 | 1.276 | 145.2 | 95 | 195 | 1490 | 1490 | 3858 |
| # | date | round | division | rank | seed | perf | Δ Elo | Elo new | Elo rank | Δ SRM | SRM new | SRM rank |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 2008-05-03 | East China Round 1 | 1 | 185 | 423.85 | 1.20 | 192 | 1951 | 3883 | -65 | 1293 | 2550 |
| 1 | 2007-10-09 | College Tour SRM 370 | 1 | 77 | 135.12 | 0.81 | 231 | 1759 | 4408 | 158 | 1358 | 1709 |