Different puzzles, different cognitive engagement, different relationships with hospital time. A practical comparison of crosswords, Sudoku, Wordle, KenKen, cryptic crosswords, jigsaw puzzles, and brain-teaser books — what each does for you in a chair, and how to pick the right one for the day. Sourced from r/crossword, r/sudoku, and consistent themes from long-treatment patients.
Different puzzles do different things to the chair-time brain. Crosswords test memory and lateral thinking. Sudoku is pure pattern recognition; meditative once you settle in. Wordle is fast satisfaction (5 minutes). KenKen blends arithmetic and logic. Cryptic crosswords are deep engagement (NYT-style is too much for some treatment days). Below: which puzzle for which day, where to find them, and how to build a rotation.
Crosswords (NYT-style)
What it does: Tests vocabulary, memory, lateral thinking. The grid fills slowly; satisfaction comes from clusters opening up. Monday is easy; Saturday is hardest.
Best for: Days when energy is medium-to-high. Pre-medication days. Off-cycle weeks.
Time per puzzle: Monday 10-15 min; Wednesday 25-35 min; Saturday 60+ min.
Where to find: NYT app subscription ($6-7/month, includes archive). The mini is free daily. Newspaper Sunday section. Will Shortz puzzle books at libraries and bookstores.
Avoid: Saturday crosswords on a chemo-cycle low day.
Sudoku
What it does: Pure pattern recognition; meditative; same logic every time, just different numbers. Doesn’t require vocabulary. Good when the brain is foggy.
Best for: Most days, including chemo-fog days. The repetitive logic is calming.
Time per puzzle: Easy 10 min; Medium 20-25 min; Expert 45+ min.
Where to find: Will Shortz Sudoku books, NYT Sudoku app (free), newspaper, online (sudoku.com).
Avoid: Expert-level on a worst-symptom day.
Wordle (and family)
What it does: 5-minute hit of satisfaction. Daily ritual. Low cognitive load.
Best for: Bridge moments — start of treatment day, end of session, after the nap.
Time: 3-7 minutes. One per day.
Family: Wordle, Connections, Strands, Spelling Bee, Letter Boxed (all NYT). Octordle (Wordle but 8 puzzles at once).
Where to find: Free on the NYT website (Wordle, Connections, Strands). Some require subscription (Spelling Bee full mode).
KenKen
What it does: Logic + arithmetic. Like Sudoku but with math operations. Engages a different cognitive area.
Best for: When you want puzzle-engagement but Sudoku has gone stale.
Time: 5-min easy; 30-min hard.
Where to find: kenkenpuzzle.com (free). Daily NYT KenKen.
Cryptic crosswords (UK-style)
What it does: Deep cognitive engagement. Each clue is a wordplay puzzle: anagram, hidden word, charade, double definition. Steep learning curve; deeply rewarding once it clicks.
Best for: Off-cycle weeks. Long flights. Days you want immersion.
Time: 45-90 min.
Where to find: The Guardian (free online), The Times of London, dedicated cryptic apps.
Caveat: Bring a learner’s guide if new to cryptics; the conventions are not intuitive.
Logic puzzles (Penny Press, Brain Teasers)
What it does: Deductive reasoning puzzles (“five people each own a different pet, live in different cities…”). Requires concentrated attention; very rewarding.
Best for: Quiet chair days; long waits.
Time: 15-45 min per puzzle.
Where to find: Penny Press logic puzzle books at bookstores and pharmacies.
Jigsaw puzzles (small, portable)
What it does: Visual + spatial. Calming. Tactile.
Best for: Hospital bed during inpatient stays; not infusion chair (no surface). Magnetic travel jigsaws exist.
Time: 100-piece travel: 30-60 min. Larger: hours-days.
The rotation strategy
Real patients describe the rotation that emerges:
Paper vs. phone
| Aspect | Paper | Phone |
|---|---|---|
| Eye fatigue | Lower | Higher |
| Battery dependency | None | Yes |
| Hint availability | None (good) | Easy (bad for engagement) |
| Portability | Bigger | Smaller |
| Pencil-and-eraser ritual | Yes | No |
| Auto-save | No | Yes |
Many treatment patients describe phone-puzzle fatigue and switching back to paper for chair-time specifically.
The puzzle bag
One puzzle book + one mechanical pencil + a soft eraser. That’s it. The right book becomes a 6-week companion.
