Canonical station rotation 18×6×6

Eighteen participants rotate through six named stations while squared penalties discourage missed station visits and repeated encounters.

Results

18 people6 groups6 sessions60s limit8 CPUs

Scenario ID: internal.station-rotation-18p-6g-6s.v1
Problem hash: sha256:52f92bd7df24c5f62e9f80b3bbdd20cf33e6e6a6e021e6eb33a878ba07a80ac4

Comparator results

publication r18

Barasu-kun

Unsupported

valid —best —median —

Configuration

barasu-kun-0586a3f-sequential-v1

evidence r2 · unsupported

The live product cannot express named-station visit-count targets.

GolfSoftware Play All

Unsupported

valid —best —median —

Configuration

golfsoftware-play-all-live-55-second-v1

evidence r2 · unsupported

The live product cannot express named-station visit-count targets.

Good-Enough Golfers

Unsupported

valid —best —median —

Configuration

unsupported-group-visit-counts

evidence r2 · unsupported

The product cannot express canonical per-station visit-count targets.

GroupMixer

Feasible

valid 5/5best 30median 80

Configuration

auto-extreme-8-defaults

evidence r2 · eligible

Gurobi

Unavailable

valid —best —median —

Configuration

unavailable-license

evidence r2 · unavailable

No runnable licensed environment and reproducible formulation are available for v1.

Halftime Team Pairings

Unsupported

valid —best —median —

Configuration

halftime-team-pairings-live-sequential-last-six-v1

evidence r2 · unsupported

The visible workflow cannot express canonical named-station visit-count targets.

Hexaly

Unavailable

valid —best —median —

Configuration

unavailable-license

evidence r2 · unavailable

No runnable licensed environment and reproducible formulation are available for v1.

IIENSTITU Random Group Generator

Unsupported

valid —best —median —

Configuration

iienstitu-live-avoid-history-seeded-v1

evidence r2 · unsupported

The visible workflow cannot express canonical named-station visit-count targets.

Optimal Group Generator

Unsupported

valid —best —median —

Configuration

optimal-group-generator-live-fixed-ga-sequential-v1

evidence r2 · unsupported

The live product cannot express named-station visit-count targets.

Google OR-Tools CP-SAT

Optimal

valid 5/5best 0median 0

Configuration

ortools-cpsat-case-formulations-v1:station-rotation-zero-target-v3

evidence r3 · eligible

Social Golfer Online

Unsupported

valid —best —median —

Configuration

unsupported-group-visit-counts

evidence r2 · unsupported

The product cannot express canonical per-station visit-count targets.

Teach Arcade Group Maker

Unsupported

valid —best —median —

Configuration

teach-arcade-live-roundrobin-sequential-history-v1

evidence r2 · unsupported

The visible workflow cannot express canonical named-station visit-count targets.

TourneyCard Golf Randomizer

Unsupported

valid —best —median —

Configuration

unsupported-group-visit-counts

evidence r2 · unsupported

The product cannot express canonical per-station visit-count targets.

Comparator status, attempts, score, and configuration
Tool	Status	Valid	Best	Median	Evidence
Barasu-kun	Unsupported	—	—	—	Configuration `barasu-kun-0586a3f-sequential-v1` evidence r2 · unsupported The live product cannot express named-station visit-count targets.
GolfSoftware Play All	Unsupported	—	—	—	Configuration `golfsoftware-play-all-live-55-second-v1` evidence r2 · unsupported The live product cannot express named-station visit-count targets.
Good-Enough Golfers	Unsupported	—	—	—	Configuration `unsupported-group-visit-counts` evidence r2 · unsupported The product cannot express canonical per-station visit-count targets.
GroupMixer	Feasible	5/5	30	80	Configuration `auto-extreme-8-defaults` evidence r2 · eligible
Gurobi	Unavailable	—	—	—	Configuration `unavailable-license` evidence r2 · unavailable No runnable licensed environment and reproducible formulation are available for v1.
Halftime Team Pairings	Unsupported	—	—	—	Configuration `halftime-team-pairings-live-sequential-last-six-v1` evidence r2 · unsupported The visible workflow cannot express canonical named-station visit-count targets.
Hexaly	Unavailable	—	—	—	Configuration `unavailable-license` evidence r2 · unavailable No runnable licensed environment and reproducible formulation are available for v1.
IIENSTITU Random Group Generator	Unsupported	—	—	—	Configuration `iienstitu-live-avoid-history-seeded-v1` evidence r2 · unsupported The visible workflow cannot express canonical named-station visit-count targets.
Optimal Group Generator	Unsupported	—	—	—	Configuration `optimal-group-generator-live-fixed-ga-sequential-v1` evidence r2 · unsupported The live product cannot express named-station visit-count targets.
Google OR-Tools CP-SAT	Optimal	5/5	0	0	Configuration `ortools-cpsat-case-formulations-v1:station-rotation-zero-target-v3` evidence r3 · eligible
Social Golfer Online	Unsupported	—	—	—	Configuration `unsupported-group-visit-counts` evidence r2 · unsupported The product cannot express canonical per-station visit-count targets.
Teach Arcade Group Maker	Unsupported	—	—	—	Configuration `teach-arcade-live-roundrobin-sequential-history-v1` evidence r2 · unsupported The visible workflow cannot express canonical named-station visit-count targets.
TourneyCard Golf Randomizer	Unsupported	—	—	—	Configuration `unsupported-group-visit-counts` evidence r2 · unsupported The product cannot express canonical per-station visit-count targets.

Measured attempts

GroupMixer · seed-101feasible timeout

same-machine nativecost 8059.059s13 MiB

GroupMixer · seed-202feasible timeout

same-machine nativecost 9059.157s13 MiB

GroupMixer · seed-303feasible timeout

same-machine nativecost 3059.254s13 MiB

GroupMixer · seed-404feasible timeout

same-machine nativecost 11059.034s13 MiB

GroupMixer · seed-505feasible timeout

same-machine nativecost 7059.083s13 MiB

Google OR-Tools CP-SAT · seed-101optimal zero

same-machine nativecost 09.888s2,372 MiB

Google OR-Tools CP-SAT · seed-202optimal zero

same-machine nativecost 04.518s183 MiB

Google OR-Tools CP-SAT · seed-303optimal zero

same-machine nativecost 04.405s182 MiB

Google OR-Tools CP-SAT · seed-404optimal zero

same-machine nativecost 06.185s183 MiB

Google OR-Tools CP-SAT · seed-505optimal zero

same-machine nativecost 04.724s182 MiB

Per-attempt benchmark status, execution class, canonical cost, runtime, and memory
Tool / attempt	Execution	Status	Cost	Wall	Peak RSS
GroupMixer · seed-101	Native	feasible timeout	80	59.059s	13 MiB
GroupMixer · seed-202	Native	feasible timeout	90	59.157s	13 MiB
GroupMixer · seed-303	Native	feasible timeout	30	59.254s	13 MiB
GroupMixer · seed-404	Native	feasible timeout	110	59.034s	13 MiB
GroupMixer · seed-505	Native	feasible timeout	70	59.083s	13 MiB
Google OR-Tools CP-SAT · seed-101	Native	optimal zero	0	9.888s	2,372 MiB
Google OR-Tools CP-SAT · seed-202	Native	optimal zero	0	4.518s	183 MiB
Google OR-Tools CP-SAT · seed-303	Native	optimal zero	0	4.405s	182 MiB
Google OR-Tools CP-SAT · seed-404	Native	optimal zero	0	6.185s	183 MiB
Google OR-Tools CP-SAT · seed-505	Native	optimal zero	0	4.724s	182 MiB

Pair-frequency distribution

Google OR-Tools CP-SAT · seed-101

Number of participant pairs by meeting frequency
Meetings	Participant pairs
1	108

Unique contacts: 108
Repeat excess: 0
Repeated pairs: 0
Worst pair count: 1
Min contacts / person: 12
Mean contacts / person: 12

Evidence and reproduction

gm-scenarios materialize internal.station-rotation-18p-6g-6s.v1 --pretty --output case.json

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