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Daily scores reset at midnight, London time. Your total and daily history carry on. Saved in this browser; clearing its data resets points. Device sync is not included in this trial.
Wins only. Number puzzles: 10 points, or 20 in Brain Fog; each puzzle scores once, including practice and archive. Computer matches: 1–100 by board and difficulty. Classic and Dissolve score equally. Friend games and draws earn no points. Points start with new wins in this trial.
| Game | Casual | Thoughtful | Expert |
|---|---|---|---|
| Tri | 1 | 3 | 10 |
| Quad | 3 | 10 | 25 |
| Quint | 5 | 20 | 50 |
| Hexa | 10 | 40 | 100 |
| Game | Classic | Brain Fog |
|---|---|---|
| Base10 | 10 | 20 |
| Hex | 10 | 20 |
| Binary | 10 | — |
| Octal | 10 | 20 |
| Time | 10 | — |
Every guess and clue stays visible.
Archive wins count towards your total. Daily streaks belong to today’s game.
One number in a million. You’ve got clues.
Six digits. Six guesses. One peculiar fact.
Find your next little obsession
Six digits, six guesses and a discovery.
HexFind a secret colour with six symbols.
BinaryA little challenge with zeroes and ones.
Octal ♫A base eight puzzle with a musical finish.
Noughts Tri · 3 × 3Three in a row against the computer or a friend.
Noughts Quad · 4 × 4Four in a row, with more room to plot.
Noughts Quint · 5 × 5Four in a row on a five by five board.
Noughts Hexa · 6 × 6Five in a row on our largest board.
Time Machine ◷Six guesses to find a secret time.
Noughts Calculator3D Noughts and Crosses · Tri 3DPlay free 3D tic-tac-toe on a rotating 3 × 3 × 3 cube against the computer or a friend.
A little more to discover
Follow your curiosity into numbers, music, nature and time.
Noughts & Crosses: the deep diveTic-tac-toe, ancient games, clever traps and bigger boards.
START HEREMeet the basesOne number. Lots of ways to write it.
How we learned to countFrom pebbles to the numbers we know.
A world of 0s and 1sBig ideas, just two little digits.
Numbers in colourThe colourful side of hexadecimal.
Nature has a patternA closer look at the world outside.
Numbers with a musical earOctaves, little tunes and base eight.
A little wander through timeFrom the clock on the wall to the stars.
Noughts Base10 — a daily six-digit number guessing game
Six digits. Six guesses. One peculiar fact. Noughts is a free daily number puzzle that turns a little logical thinking into a satisfying discovery.
Find the secret six-digit number using the clues from each guess. Green means the right digit in the right place; yellow means the digit belongs somewhere else. The higher-or-lower arrow helps you narrow things down. Digits can repeat, and a zero at the beginning is perfectly respectable.
If you enjoy games like Wordle, Noughts offers a different daily challenge: think in numbers, follow the clues and uncover a surprising fact when the round ends—even if the number escapes you.
Choose Base10 to keep every clue visible, or try Brain Fog for an extra memory challenge. Explore previous daily puzzles in the calendar, then discover Hex and Binary for two more ways to give your curiosity a workout.
Number guessing game strategy: make each clue count
What is the best first guess for a number guessing game?
Try six different digits, such as 012345, to learn about several digits at once. It is a useful opening, not a guaranteed best move. Repeated digits are allowed in the answer, so later guesses may need to test another copy. A broad opening is useful for information, but the best next move depends on the clues already on your board. Do not keep testing absent digits just to follow a fixed starting routine.
How to solve number guessing puzzles with higher and lower clues
The arrow compares the whole six-digit number, not each box separately. If the secret is higher than 450000, your next guess must fit above that value as well as matching every colour clue. A yellow digit still belongs somewhere, even if the arrow points down.
Number games like Wordle without equations
Base10 asks you to deduce a hidden number rather than build a calculation. Keep green digits in place, move yellow digits into possible positions and remember that grey can mean an extra copy. The even-or-odd clue concerns the final digit. If you think of it as number Wordle, remember the differences: our answer has six positions, repeated digits and leading zeroes are allowed, and the arrow compares the complete number. A free daily number deduction game is still about the clues, not mental arithmetic speed.
Looking for games like Numberle?
If you enjoy finding a hidden number from position clues, Base10 offers a six-digit daily challenge. Follow colour clues, use the whole-number arrow and uncover a sourced discovery at the end. Noughts is its own game; choose it for another deduction puzzle rather than expecting Numberle’s exact rules.
A small family of number deduction games online
Start with familiar decimal digits in Base10, then try Binary, Hex or Octal. Each changes the symbols and clues you reason with. Time Machine gives the same curiosity a clock face: deduce a hidden time within a 24-hour day.
A quick daily number puzzle, at your own pace
One daily puzzle gives you a manageable place to start. There is no need to rush your six guesses: compare the clues, test an idea and return to your saved round in this browser. If you want another challenge afterwards, use practice or an available date in the calendar.
A daily code breaking game with numbers
Think of the answer as a six-position code. A leading zero still fills a position, and repeated digits are allowed. For example, a grey second copy does not rule out a green first copy: each copy in the answer can only account for one coloured clue. Keeping track of positions and copies together is what turns a hopeful guess into deduction.
Guess the six-digit number: put the clues together
In this six-digit number guessing game, a promising guess has to satisfy all the clues you have learned. Keep confirmed green positions, find a new home for yellow digits and respect the higher-or-lower arrow. The daily six-digit number puzzle changes each day, while practice gives you another round when you want one.
Questions before your next round
Can I play previous daily number puzzles?
Yes. Open the calendar to choose an available past date. Each puzzle keeps its own saved progress in this browser. Archive catch-ups do not extend a daily streak. The daily number puzzle archive lets you catch up on a missed round or choose another available puzzle after today’s game. Future dates stay locked until release.
What makes Brain Fog harder?
Only the latest two completed guesses stay clear. Older digits, colours and arrows fade away, so you also need to remember what you learned. All rows return when the round ends.
Do I need to win to see the discovery?
No. Solve the number or finish your six attempts and the fact is yours either way.
How do even and odd clues help a number puzzle?
The even-or-odd clue describes the final digit of the answer. An even answer ends in 0, 2, 4, 6 or 8; an odd answer ends in 1, 3, 5, 7 or 9. Combine that with the colour clues and whole-number arrow. It narrows your choices without naming the final digit.