Odd one out: your grown-up lays 4 things on the table, you find which doesn't belong (5 rounds)
Every answer can be right if you explain it
Off-screenAges 6–11EasyTick off when done
Logic & Puzzles · 48 quests · 28 off-screen
Logic puzzles and strategy games for kids
Logic is the biggest part of the Tandomo library, and for good reason: a good puzzle is the purest form of “hard but fun”. Kids will happily spend twenty minutes on a river-crossing puzzle that they'd never spend on a worksheet, and the thinking involved — holding several conditions in mind, testing an idea, backing out of a dead end — is the same.
The list mixes on-screen puzzles that check the answer instantly with classic table games that need nothing but a board and another person: chess, checkers, dominoes, backgammon. Those old games are a deliberate choice. They're social, they're screen-free, and they teach planning ahead in a way no app can fake.
For younger kids (about 6–11)
Shorter, more playful, more hands-on. 9 quests.
+10
Memory tray: study 10 objects for 1 minute, a parent removes one — what's gone?
Spy training at the kitchen table
Off-screenAges 6–11EasyTick off when done
Pattern clap: copy your grown-up's clap-stomp pattern, then make one they must copy
A pattern you can hear
Off-screenAges 6–11EasyTick off when done
Card sorting race: sort a shuffled deck by suit and number, beat your own time
Sort fast, think faster
Off-screenAges 6–11EasyTimed
Car bingo: draw a 3×3 grid of things to spot (a red car, a bridge, a cow) and race to a line
The drive goes faster with a grid
Off-screenAges 6–11EasyTick off when done
I spy by color and shape on the drive — 5 rounds, the spotter becomes the spy
A road-trip classic for the youngest
Off-screenAges 6–11EasyTick off when done
Show all 9 quests
Spot the pattern: 5 picture sequences, what comes next?
Pictures, not numbers
OnlineAges 6–11EasyAuto-checked quiz
Riddle trio: 3 riddles, one hint each if you need it
A 5-minute brain wake-up
OnlineAges 6–11EasyAuto-checked quiz
Hide-and-seek with clues: a parent hides, leaves 3 clues, you track them down
Hide-and-seek with a brain
Off-screenAges 6–11EasyTick off when done
For teens (12–16)
Longer, more open, more grown-up. 2 quests.
Decision matrix: rank 3 options for a real choice (a club, a trip, a phone) with weighted scores
How grown-ups make hard calls
OnlineAges 12–16MediumShort written answer
Plan the family's Saturday so 4 people's wishes fit — show your schedule
Logistics boss
OnlineAges 12–16MediumShort written answer
Great at any age
Scale the difficulty up or down to suit your child. 37 quests.
Solve today's riddle
Daily brain-teaser ritual
OnlineAll agesMediumAuto-checked quiz
Sudoku (level to taste), time yourself
Beat your own time
Off-screenAll agesMediumTimed
Find the next number in the sequence — and explain why
Pattern hunt
OnlineAll agesMediumAuto-checked quiz
3-clue mini escape room
Game framing
OnlineAll agesMediumAuto-checked quiz
Spot the logical fallacy in this short argument
Feels like debunking, not grammar
OnlineAll agesHardAuto-checked quiz
Play chess for 30 minutes (vs someone or the clock)
Timeless strategy, zero screens
Off-screenAll agesMediumTimed
Show all 37 quests
Checkers — best of 3 against someone at home
Old-school board-game showdown
Off-screenAll agesEasyTick off when done
Solve 3 chess puzzles (mate-in-2) on a board or paper
Think like a grandmaster
Off-screenAll agesHardAuto-checked quiz
One full round of Ludo or backgammon — note who won
Classic table game
Off-screenAll agesEasyTick off when done
A round of dominoes — keep the score yourself
Numbers + a table-game classic
Off-screenAll agesEasyTick off when done
Zebra puzzle: 4 houses, 4 clues — work out who owns the cat
Deduction grid, plays like a whodunnit
OnlineAll agesHardAuto-checked quiz
Knights & knaves: 3 islanders, one lies — who?
Liar logic, no formulas needed
OnlineAll agesHardAuto-checked quiz
Cryptarithm: crack SEND + MORE = MONEY
Letters hiding digits
Off-screenAll agesHardAuto-checked quiz
Caesar cipher: decode a secret message, then write one back
Spy craft
OnlineAll agesMediumShort written answer
River crossing: get the wolf, goat and cabbage across
Ancient brain-teaser, still stumps adults
OnlineAll agesMediumAuto-checked quiz
Balance puzzle: find the fake coin in 3 weighings
Feels impossible until it clicks
OnlineAll agesHardAuto-checked quiz
Magic square: fill a 3×3 so every line sums to 15
Sudoku's ancestor
Off-screenAll agesMediumTick off when done
Nonogram/picross: solve a small picture grid
A picture hidden inside logic
Off-screenAll agesMediumTimed
Truth table: is this argument actually valid? Build it out
Think like a logic gate
OnlineAll agesHardAuto-checked quiz
Guess my number 1–1000 in 10 yes/no questions
Binary search disguised as a game
Off-screenAll agesMediumTick off when done
Nim: play 21 matchsticks, then find the winning strategy
Beat anyone once you see it
Off-screenAll agesHardShort written answer
Mastermind: crack a 4-color code in 8 guesses
Codebreaker classic
Off-screenAll agesMediumTick off when done
Tangram: rebuild 3 shapes from the 7 pieces
Geometry with your hands
Off-screenAll agesMediumTick off when done
Bridges of Königsberg: can you walk each bridge exactly once?
The puzzle that invented a branch of math
OnlineAll agesHardShort written answer
Lateral thinking: 3 "impossible" scenarios, ask yes/no questions
Detective mode
Off-screenAll agesMediumTick off when done
Sliding puzzle (15-puzzle): solve it and time yourself
Pocket classic
Off-screenAll agesMediumTimed
Syllogisms: 5 arguments — valid, or sneaky nonsense?
Spot the con
OnlineAll agesMediumAuto-checked quiz
Matrix patterns: which shape completes the grid?
IQ-test vibes, zero pressure
OnlineAll agesMediumAuto-checked quiz
Water jugs: measure exactly 4 gallons using a 5-gallon and a 3-gallon jug
The action-movie puzzle that stumps adults
OnlineAll agesMediumAuto-checked quiz
Hat colors: 3 prisoners in a line — who speaks first, and why?
Reasoning about someone else's reasoning
OnlineAll agesHardShort written answer
Design your own logic puzzle, make someone at home solve it
Puzzle-maker, not puzzle-taker
Off-screenAll agesHardTick off when done
Rubik's cube: learn the first layer and show someone
Analog flex
Off-screenAll agesMediumTick off when done
Car-trip 20 questions: think of an animal, everyone gets 20 yes/no questions
The oldest travel game still works
Off-screenAll agesEasyTick off when done
Detective walk: a parent picks a "suspect" object on the walk, you find it with yes/no questions
Logic on the move
Off-screenAll agesEasyTick off when done
Build a 6-step paper-clip chain reaction puzzle for someone at home
Engineer a puzzle they can't stop watching
Off-screenAll agesHardTick off when done
Escape the living room: a parent sets 3 locks (riddles), you crack them in 20 minutes
A real escape room, at home
Off-screenAll agesMediumTick off when done
Who's lying? A short mystery with 3 suspects and one clue that doesn't fit
Detective work in 10 minutes
OnlineAll agesMediumAuto-checked quiz
At home
How to run logic & puzzles quests at home
You don't need the app to use these. A few habits make them work much better.
- Don't give the answer. Give a smaller question instead: “What has to be true about the goat?” is a hint; “take the goat first” is a spoiler.
- Play the table games with them when you can. Losing to your kid at checkers is a perfectly good use of fifteen minutes.
- Celebrate the explanation, not just the answer. Several quests ask “and explain why” — that's where the learning is.
- Ask your child to invent a puzzle for you. Designing a puzzle is harder than solving one, and kids love watching an adult struggle.
How Tandomo uses these
The quests above are templates, not a fixed list. Each morning the app writes a new set for each child, adapting ideas like these to their age, their interests and anything you've asked it to focus on — so a pizza-sharing problem might become a pizza-sharing problem about their soccer team. Logic & Puzzles usually appears as one or two quests in a mixed set of 7–10, alongside other subjects and plenty of off-screen time. Your feedback on the parent dashboard steers what comes next (more in the FAQ).
Logic & Puzzles activities: common questions
Are these puzzles too hard for younger kids?
Each quest is tagged by age and difficulty. Younger kids get puzzles like the river crossing, magic squares and tangrams; the harder deduction puzzles such as zebra puzzles and truth tables are reserved for teens.
Do we need any equipment?
For the online puzzles, no. For the offline ones it's whatever you already have: a chessboard, dominoes, a deck of cards, matchsticks, paper and a pencil.
Why are classic board games counted as learning?
Because they ask kids to plan, predict an opponent's move and lose gracefully. And they get a family round a table without anyone looking at a screen.
What if my child gets stuck and frustrated?
Suggest a break and come back later; a surprising number of puzzles solve themselves after a walk. You can also give a hint as a question rather than an answer.
Related reading
Logic & Puzzles quests, built around your kid
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