File:TriDominoes Richards boss.svg
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Summary
| Description |
English: Triangular dominoes, as described by Frank Richards in US Patent 331,652 (1885). The dominoes are marked with pips on each side and the sum of the pips in the center. This "boss" domino was described by Richards as being able to match any other domino. |
| Date | |
| Source | Own work |
| Author | Mliu92 |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:02, 3 January 2024 | | 200 × 175 (2 KB) | Mliu92 | Uploaded own work with UploadWizard |
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