uax14-linebreak · Syncvals

Task gallery / Software engineering / Version 1

Reference solution (oracle): Pass
No-op resistance check: Pass
QA verdict: Not recorded
Aggregate eligibility: Eligible version

The task

Re-derive the Unicode line breaking algorithm (UAX #14, Unicode 16.0.0) in std-only Rust Anything that wraps text — a browser, a terminal, a typesetter — has to decide where a line is permitted to end. Unicode fixes that decision in UAX #14: an ordered chain of rules over per-character LineBreak classes that classifies every boundary in a string as a mandatory break, an allowed break, or a forbidden one. Implement t…

Excerpt only; not a complete executable task specification. Task ID task_92ef1ca56a8e4e1f · version 1. Selection status: not fully recorded.

Results by model and effort

This exact task version only. Every rate is passes / valid runs with a Wilson 95% interval; n≤2 remains counts only. Macro aggregation does not apply within a single task. Baselines are summarized in the quality gates, not ranked. A passed no-op resistance check means that doing nothing did not solve the task.

Current evidence

Model / effort	Verifier result [95% Wilson]	Diagnostic labels / valid	HARNESS_ERROR · excluded	Outcome classes
Claude Opus 5 · default (unverified)	7/7 · 100.0% [64.6%, 100.0%]	5 / 7	0	GOOD_FAILURE: 0 BAD_FAILURE: 0 GOOD_SUCCESS: 5 BAD_SUCCESS: 0

Legacy evidence

Model / effort	Verifier result [95% Wilson]	Diagnostic labels / valid	HARNESS_ERROR · excluded	Outcome classes

Difficulty, with uncertainty

Selected-best difficulty: 0.0% [0.0%, 35.4%]. This is one minus the best measured current-row pass rate among rows with at least five valid runs.

The maximum is selected from the observed rows, so the estimate is optimistic. Its Wilson interval is not adjusted for model selection. “Hard” requires qualifying GOOD_FAILURE evidence; the threshold flag additionally requires the interval and recorded quality gates to meet the documented rule. This is not independent validation. Threshold flag: no.

Every recorded run

16 recorded trials, including controls. Diagnostic labels do not replace verifier reward. Labels and quality checks are source declarations, not independently attested here. Internal evidence remains private; a missing public URL is shown explicitly. Records with invalid or absent rewards are not scored.

Run / model	Date / source	Reward / eligibility	Diagnostic class / source	Resources	Evidence
`trial_54e0640349b14621` oracle@@	Oct 8, 2026 console	1 · excludedsource_evidence_exclusion	No diagnostic label derived	Tokens: — Turns: — Cost: —	Not publicly available
`trial_88fb177c00f7433a` nop@@	Oct 8, 2026 console	0 · excludedsource_evidence_exclusion	No diagnostic label derived	Tokens: — Turns: — Cost: —	Not publicly available
`trial_2832c305644e4804` Claude Opus 5 · default (unverified)	Oct 8, 2026 console	1 · valid	No diagnostic label derived	Tokens: 149,363 Turns: 45 Cost: $8.8419	Not publicly available
`trial_47306a47515f408c` Claude Opus 5 · default (unverified)	Oct 8, 2026 console	1 · valid	No diagnostic label derived	Tokens: 138,321 Turns: 41 Cost: $7.9746	Not publicly available
`trial_d58d329e40d1488e` oracle@@	Oct 10, 2026 console	1 · valid	No diagnostic label derived	Tokens: — Turns: — Cost: —	Not publicly available
`trial_f99a0700615f414c` nop@@	Oct 10, 2026 console	0 · valid	No diagnostic label derived	Tokens: — Turns: — Cost: —	Not publicly available
`trial_1b9b0d943b21486b` Claude Opus 5 · default (unverified)	Oct 10, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: 85,220 Turns: 36 Cost: $4.9352	Not publicly available
`trial_1f46432ebcf24f93` Claude Opus 5 · default (unverified)	Oct 10, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: 101,438 Turns: 43 Cost: $6.5015	Not publicly available
`trial_55873f58f041462d` Claude Opus 5 · default (unverified)	Oct 10, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: 126,078 Turns: 46 Cost: $7.5550	Not publicly available
`trial_55fa8e839f7e4eeb` Claude Opus 5 · default (unverified)	Oct 10, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: 114,849 Turns: 43 Cost: $6.7968	Not publicly available
`trial_c432c84a7182403d` Claude Opus 5 · default (unverified)	Oct 10, 2026 console	1 · valid	GOOD_SUCCESS frozen-classifier	Tokens: 103,283 Turns: 47 Cost: $6.3609	Not publicly available
`trial_2aeae8c92e68443c` Claude Opus 5 · default (unverified)	Oct 11, 2026 console	No reward · excludedno_reward	No diagnostic label No diagnostic source	Tokens: — Turns: — Cost: —	Not publicly available
`trial_49bb00bb27544eee` Claude Opus 5 · default (unverified)	Oct 11, 2026 console	No reward · excludedno_reward	No diagnostic label No diagnostic source	Tokens: — Turns: — Cost: —	Not publicly available
`trial_4db352146e4f4d0d` Claude Opus 5 · default (unverified)	Oct 11, 2026 console	No reward · excludedno_reward	No diagnostic label No diagnostic source	Tokens: — Turns: — Cost: —	Not publicly available
`trial_7547a674af77409c` Claude Opus 5 · default (unverified)	Oct 11, 2026 console	No reward · excludedno_reward	No diagnostic label No diagnostic source	Tokens: — Turns: — Cost: —	Not publicly available
`trial_867fc31f5f3849cf` Claude Opus 5 · default (unverified)	Oct 11, 2026 console	No reward · excludedno_reward	No diagnostic label No diagnostic source	Tokens: — Turns: — Cost: —	Not publicly available