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- Contradiction (10:10, 25 October 2021)
- Backtrack (10:17, 25 October 2021)
- Ariadne's Thread (10:19, 25 October 2021)
- BUG Lite (10:31, 25 October 2021)
- Pattern Overlay Method (11:03, 25 October 2021)
- Template (11:05, 25 October 2021)
- Almost Locked Set (11:09, 25 October 2021)
- Fish and Subsets (11:16, 25 October 2021)
- Bivalue (11:18, 25 October 2021)
- Conjugate pair (11:22, 25 October 2021)
- Bilocal (11:22, 25 October 2021)
- Weak link (11:24, 25 October 2021)
- Strong link (11:25, 25 October 2021)
- Link (11:29, 25 October 2021)
- Inference (11:42, 25 October 2021)
- Implication (11:43, 25 October 2021)
- Turbot Fish (11:53, 25 October 2021)
- Multi-Colors (12:06, 25 October 2021)
- 2-String Kite (12:06, 25 October 2021)
- Skyscraper (12:07, 25 October 2021)
- Empty Rectangle (12:17, 25 October 2021)
- XY-Wing (12:56, 25 October 2021)
- Pattern (12:56, 25 October 2021)
- Naked Pair (13:21, 25 October 2021)
- Locked Pair (13:21, 25 October 2021)
- Naked Quad (13:25, 25 October 2021)
- Naked Triple (13:25, 25 October 2021)
- Locked Triple (13:25, 25 October 2021)
- Almost Locked Candidates (13:51, 25 October 2021)
- Hidden Pair (14:08, 25 October 2021)
- Hidden Triple (14:19, 25 October 2021)
- Hidden Quad (14:20, 25 October 2021)
- Simple Colors (14:26, 25 October 2021)
- Cluster (14:27, 25 October 2021)
- Opposite (14:29, 25 October 2021)
- Equivalent (14:31, 25 October 2021)
- Parity (14:31, 25 October 2021)
- Connected pair (14:41, 25 October 2021)
- Conjugate (14:41, 25 October 2021)
- Bifurcation (14:46, 25 October 2021)
- Weak Colors (14:57, 25 October 2021)
- Color Trap (14:59, 25 October 2021)
- Color Wrap (15:00, 25 October 2021)
- Color Wing (15:01, 25 October 2021)
- Solved cell (15:11, 25 October 2021)
- Avoidable Rectangle (15:15, 25 October 2021)
- Unavoidable set (15:34, 25 October 2021)
- Reverse BUG (15:34, 25 October 2021)
- Reverse BUG Lite (16:02, 25 October 2021)
- Footprint (16:17, 25 October 2021)