GroupMixer
Feasible
5/5
valid attempts
Best cost 2,425 · median 2,447
Canonical case report
Social Golfer 196x14x14 (14-14-14)
Synthetic pure Social Golfer scenario: 196 participants into 14 groups of 14 across 14 sessions, maximizing unique contacts.
- People
- 196
- Groups
- 14
- Sessions
- 14
- Deadline
- 300s
Canonical input sha256:ee8bf6ced63c1330ed42b27c975edce57f42cb7618ee44137868aa9fb4a2e16b
Result at the declared limit
Google OR-Tools CP-SAT
Error
0/5
valid attempts
Social Golfer Online
Unsupported
0/0
valid attempts
The live hosted beta rejected member 121 with HTTP 422, so its 120-member limit cannot represent this 196-participant case.
OR-Tools produced no candidate: 4 outer-watchdog errors and 1 earlier process error. All 5 attempts recorded std::bad_alloc. These are errors—not timeout or infeasibility claims.
Every native attempt
| Tool / attempt | Status | Cost | Wall time | Peak RSS |
|---|---|---|---|---|
| GroupMixer · seed-101 | feasible timeout | 2,442 | 299.731s | 50 MiB |
| GroupMixer · seed-202 | feasible timeout | 2,425 | 299.36s | 51 MiB |
| GroupMixer · seed-303 | feasible timeout | 2,450 | 299.213s | 50 MiB |
| GroupMixer · seed-404 | feasible timeout | 2,456 | 299.44s | 51 MiB |
| GroupMixer · seed-505 | feasible timeout | 2,447 | 299.713s | 50 MiB |
| Google OR-Tools CP-SAT · seed-101 | error | — | 305.018s | 6,144 MiB |
| Google OR-Tools CP-SAT · seed-202 | error | — | 305.056s | 6,193 MiB |
| Google OR-Tools CP-SAT · seed-303 | error | — | 305.067s | 6,244 MiB |
| Google OR-Tools CP-SAT · seed-404 | error | — | 305.016s | 6,142 MiB |
| Google OR-Tools CP-SAT · seed-505 | error | — | 244.588s | 6,071 MiB |
Pair-frequency distribution
| Meetings | Participant pairs |
|---|---|
| 1 | 13221 |
| 2 | 1980 |
| 3 | 186 |
| 4 | 23 |
| 5 | 1 |
- Unique contacts
- 15,411
- Repeat excess
- 2,425
- Repeated pairs
- 2,190
- Worst pair count
- 5
- Min contacts / person
- 145
- Mean contacts / person
- 157.26
Configurations and eligibility
Barasu-kun
Pending verificationpending-live-workflowLive limits, exact geometry, quality mode, and output capture require verification.
GolfSoftware Play All
Pending verificationpending-live-workflowLive limits, exact geometry, quality mode, and output capture require verification.
Good-Enough Golfers
Pending verificationpending-live-workflowLive limits, exact geometry, quality mode, and output capture require verification.
GroupMixer
Feasibleauto-extreme-8-defaultsGurobi
Unavailableunavailable-licenseNo runnable licensed environment and reproducible formulation are available for v1.
Hexaly
Unavailableunavailable-licenseNo runnable licensed environment and reproducible formulation are available for v1.
Optimal Group Generator
Pending verificationpending-live-workflowLive limits, exact geometry, quality mode, and output capture require verification.
Google OR-Tools CP-SAT
Errorortools-cpsat-case-formulations-v1:pure-sgp-no-hint-v3Social Golfer Online
Unsupportedsocial-golfer-online-beta-120-member-limitThe live hosted beta rejected member 121 with HTTP 422, so its 120-member limit cannot represent this 196-participant case.
TourneyCard Golf Randomizer
Pending verificationpending-live-workflowLive limits, exact geometry, quality mode, and output capture require verification.
UTEKAR Random Team Generator
Pending verificationpending-live-workflowLive limits, exact geometry, quality mode, and output capture require verification.
Reproduce and inspect
Use the frozen scenario and publication revision. The archive contains selected attempts, requests, schedules, logs, implementation references, and checksums.
gm-scenarios materialize internal.social-golfer-196x14x14.v1 --pretty --output case.jsonRevision and disclosure
Publication revision 9. GroupMixer authors this benchmark and the published OR-Tools formulations. Returned schedules are evaluated against the same canonical scenario rules.
No external incumbent, repaired schedule, or cross-solver hint is admitted by the selected evidence contract.