Wherigo Solver

This tool decompiles Wherigo cartridge files (.gwc) and helps you analyze them to find geocache final coordinates. It also includes built-in solvers for Reverse Wherigo cartridges.

• Upload Wherigo - decompile any .gwc file and automatically detect the final cache coordinates.
• Reverse Wherigo (Waldmeister) - decode/encode the three 6-digit codes from a -Waldmeister- Reverse Wherigo cartridge. The solver is also auto-opened when a Waldmeister cartridge is detected on upload.
• Reverse Wherigo (day1976) - decode/encode the two 5-character codes from a day1976 open-source Reverse Wherigo cartridge. Also auto-detected on upload.

• Detect final coordinates - scans Lua code, messages, and text for coordinate patterns and ranks them by confidence. Recognizes decimal degrees and degrees decimal minutes formats.
• Extremely high confidence - when a coordinate appears in both message text AND a matching Lua zone point, it's very likely the final.
• Multiple text coordinates - if several coordinates are found in messages (e.g. multi-stage), all are listed with satellite map links and a "View in Messages" button to jump directly to the source message.
• Zone center coordinates - each zone header shows its OriginalPoint (center coordinate) with a satellite map link and copy button, making it easy to spot hidden zone-based finals.
• View on Map button - in the Probable Final section, jump directly to the coordinate's pin on the interactive map.
• Satellite map links - every coordinate links directly to Google Maps satellite view.
• Lua source - view the decompiled Lua code, including decoded obfuscated strings (Urwigo and Wherigo Builder obfuscation are both supported). Use the built-in search bar (Enter / F3 / Ctrl+G) to find any text in the source with highlighted matches and previous/next navigation.
• Questions & Answers - trivia questions and multiple-choice answers extracted from the cartridge are listed in their own section. Answers are hidden by default so you can try them yourself first.
• Messages & zones - all game messages are shown grouped under their zone, with coordinates highlighted in yellow. Zone descriptions and inline zone images are also displayed. Boilerplate auto-generated content is hidden.
• Media - images and audio embedded in the cartridge are extracted and displayed, including images attached directly to zones.
• Coordinate table - all coordinates with source type, zone name, and map toggle. Filter by source group (zone origins, Lua variables, message text, etc.) and export checked coordinates as a GPX file.
• Copy buttons - every zone and message card has a copy button. For zones, this copies the zone name, description, and center coordinate together.
• Urwigo hash values - extracted for use with hash-collision solvers.

• Extremely High Coordinate found in message text and confirmed by a matching Lua zone point at the same location - very likely the final.
• High Coordinate found in message text, or the only coordinate present in any message.
• Medium Inferred from a zone name (e.g. a zone named "Cache") or coordinate context. Verify with the satellite map.
• Low No clear final detected - showing the last known non-boundary coordinate as a starting reference.

• Group pills - use the filter pills above the coordinate table to hide/show source groups (e.g. hide Zone Boundaries to focus on key points). Hidden groups are also hidden on the map.
• GPX export - check the coordinates you want, then click the GPX button to download them for your GPS device.
• Custom coordinates - click the + Custom button above the coordinate table to manually add your own coordinates. They appear on the map and can be included in GPX exports.
• Click any row in the coordinate table to zoom the map to that point and open its popup.
• Section menu - the hamburger button (bottom-left) lets you jump to any section and upload another cartridge.

Files are processed server-side and automatically deleted 30 minutes after upload. No data is stored permanently.