116 lines
6.9 KiB
Markdown
116 lines
6.9 KiB
Markdown
# Changelog
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All notable changes are documented here.
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## Unreleased
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## 0.2.0 - 2026-08-31
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- Added staged guided hints that reveal focus, technique, reasoning and effects
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before an explicit, undoable apply action.
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- Added legal centre-candidate filling, invalid note pruning and optional peer
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note maintenance after placements; erasing a value never invents candidates.
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- Added Jellyfish, finned X-Wing/Swordfish, Skyscraper, Two-String Kite, Simple
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Colouring, W-Wing, X-Chain, XY-Chain and alternating-inference-chain logical
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steps with deterministic evidence.
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- Added Unique Rectangle only behind a completed exact uniqueness proof; a
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truncated search never enables uniqueness-dependent logic.
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- Added quick and full setter-quality audits with ambiguity witnesses,
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contradiction suspects, per-item critical/redundant/unknown findings, a cell
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heatmap and optional bounded minimality proof.
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- Added explicit per-check and aggregate quality budgets, cancellation and
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serializable check evidence so a capped search remains unknown rather than
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becoming a false proof.
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- Added minimum, odd/even, disjoint-groups, little-killer and sandwich rules
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across validation, candidate filtering, exact solving, rendering and setting.
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- Added between, German-whisper, region-sum, modular, entropic and zipper lines;
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clone and extra regions; double arrows; and row, column and box indexers.
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- Added display-only Fog of War backed by a complete locally stored solution.
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Only initial lights, givens and correctly entered values reveal cells; fog is
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never treated as an extra solution constraint.
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- Added optional digit-completion counts with muted complete digits and red
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over-completion warnings.
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- Added toggleable Ctrl/Command-click matching-digit highlights without turning
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the highlights into an editable multi-selection.
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- Fixed cage replacement and removal in the setter so overlapping cages cannot
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remain accidentally active.
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- Replaced ambiguous V/X pair labels on the board with numbered 5/10 badges and
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gave inequalities a directional chevron with a marked lesser-value tip.
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- Added fourteen uniquely checked built-in examples covering the original core
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constraint families.
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- Expanded bounded, seedable generation for classic and twelve variant families
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with mixed-family recipes, sparse/balanced/dense clue controls and additional
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reflection, diagonal and four-way clue symmetries.
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- Added explicit minimal-givens mode with proof/unknown reporting, deterministic
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batches of up to 12 candidates and rankings by difficulty or clue count.
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- Added required/forbidden/minimum/maximum logical-technique profiles and an
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exact hardest-technique target, accepted only against an independent complete
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logical path and exact uniqueness check.
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- Added X-sum, skyscraper, quadruple and maximum-cell constraints across the
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model, validator, exact solver, renderer, setter and f-puzzles interchange.
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- Added per-clue false semantics for liar/Wrogn puzzles, including bounded
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impossible decoy numbers and a setter-wide false-clue mode.
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- Added the original, uniquely verified “Truth and lies” example demonstrating
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true and false outside, inclusion, maximum, cage, line and pair clues.
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- Added outside-grid clue margins, combined dual X-sum/skyscraper labels,
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outward maximum arrows and visually distinct false clues.
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- Added strict, bounded local imports for SudokuPad/CTC data and supported
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Penpa+ long links, with a structured preview of mapped semantics, preserved
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drawings, metadata and compatibility warnings.
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- Added a bounded inert visual model for f-puzzles and SCL lines, polylines,
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rectangles, ellipses, circles and text; source identity, scalar metadata and
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drawings survive edits, explicit saves, autosaves, reopening and project/share
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round-trips without becoming rules, and render beneath Fog on the board.
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- Added SudokuPad/CTC JSON and self-contained `scl…` export with progress,
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regions, cages and canonical constraint drawings, while rejecting negated
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clues or free-form global rules it cannot preserve safely.
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- Added a compatibility check which never fetches SudokuPad short IDs or other
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server-hosted puzzle references.
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- Added standalone SVG, high-resolution PNG and single-page PDF visual exports
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for supported constraints, safe preserved drawings, givens and optional
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solving progress.
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- Added named savepoints, isolated hypothesis branches, keep/discard decisions
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and read-only replay of complete solving states.
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- Added debounced recovery snapshots for puzzle state, progress, aid-mémoire
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and a validated, size-bounded gameplay history, with explicit restore/discard
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handling after an interruption.
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- Upgraded the local Library with title/tag search, tag and completion filters,
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safe grid thumbnails, tag editing and selected export, duplication or
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confirmed deletion.
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- Added a relative-scope web app manifest and subpath-aware service worker with
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an offline application-shell fallback after the first successful load.
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- Added an optional configurable aid-mémoire whose labelled scratch cells
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support values, both note styles and colours without constraining the puzzle;
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its state is preserved in undo, replay, Library progress and project/share
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interchange.
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- Added a generalized Sum Lab with independent digit bounds, repeats,
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required/excluded digits, selected-cell candidates, positional assignments
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and reversible manual eliminations.
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- Added Candidate Lab filters, selected/touching/specific-house scopes, house
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positions, strong conjugate/bivalue links, weak links and bounded board
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overlays.
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- Added technique-targeted practice generation which mines a bounded,
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deterministic set of uniquely checked puzzles and verifies the requested
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technique in the logical solve path.
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- Added a persisted 75–200% board viewport, Fit and board-scoped zoom shortcuts,
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plus an announced Pan mode which pauses cell pointer targeting.
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- Added tap-toggle multi-selection and a single safe-area-aware sticky entry pad
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at narrow widths, with touch-sized zoom controls.
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- Added eight hue-and-pattern colour marks, configurable off/concise/detailed
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candidate narration, and fog-safe board, toolbar, helper and guided-hint
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boundaries.
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- Added real ARIA row/gridcell semantics, detailed cell descriptions and
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non-wrapping Arrow, Home/End, Control/Command + Home/End and Page Up/Down
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keyboard navigation for the puzzle and scratch grids.
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- Made Killer cage repeat semantics explicit in the setter and independent of
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whether a clue is required to be true or false.
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## 0.1.0 - 2026-08-30
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- Initial local-first Sudoku setting, playing, solving and analysis workbench.
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- Added bounded classic and variant puzzle models, validation and exact solving.
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- Added explainable human-style deductions and full solve-path inspection.
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- Added Killer combination, relation and house-analysis helpers.
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- Added local projects, progress, import/export and compact share fragments.
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- Added deterministic packaging, browser tests and Toolbox SDK integration.
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