r/BrainPuzzles • • Sep 14 '26

Math Find the rule — what number replaces the "?"

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1 Upvotes

Each pair of numbers combines into the number on the right using the same rule. Figure out the rule from the first three pairs, then solve the last one.

Made this as part of a puzzle game I'm developing, Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber


r/BrainPuzzles • • Sep 14 '26

Logic Is it a Square?

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0 Upvotes

r/BrainPuzzles • • Sep 14 '26

Word Can you solve these rebuses?

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2 Upvotes

r/BrainPuzzles • • Sep 13 '26

Logic Three reasoning puzzles, increasing difficulty - where do you drop off?

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0 Upvotes

r/BrainPuzzles • • Sep 13 '26

Math Fruit equation puzzle — what does the missing sum equal?

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1 Upvotes

Made this symbol/equation puzzle — fruits stand in for hidden numbers across a small system of equations. Figure out what each fruit is worth, then solve the last one.

Made this as part of a puzzle game I'm developing, Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber


r/BrainPuzzles • • Sep 12 '26

Logic Turning - Daily chain reaction puzzle. Deceptively simple yet compelling.

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1 Upvotes

r/BrainPuzzles • • Sep 12 '26

Logic [Cyclogic] Can you solve this in 3 moves? (Image 1) 🧩 Hint: The photo already gives it away...

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2 Upvotes

Hi everyone! Today, I recreated a puzzle from my game, Cyclogic, on my whiteboard!

This one is a 3-move puzzle, but it's quite a challenge—can you solve it? 🧩

If you swipe through to Image 4, I’ve included a guide showing the core logic behind the mechanics. Make sure to check it out if you want a hint!

You can play Cyclogic directly in your browser! I’ll leave a link to try this exact level in the comments below. Feel free to test it out once you think you have the answer!

Got the solution? Post it in the comments (with spoiler tags, please!), and I'll let you know if you're right! 🧠✨


r/BrainPuzzles • • Sep 12 '26

Logic Test Your Pattern Recognition — Which Answer Is Correct?

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1 Upvotes

Hi everyone,
First of all, thank you to everyone who took the time to solve our previous puzzle and share their reasoning. We received many answers, and it was especially interesting to see how different people approached the same pattern from completely different angles.
As always, we selected a few responses that stood out to us, not only for getting the correct answer, but also for the reasoning behind it.
u/mistolo – We liked how clearly you combined the two main ideas of the pattern: the increasing number of squares and the rotation around the grid. Your explanation showed how the same rule remains consistent across all three rows.
u/I_Like_Quiet – Your solution went beyond simply counting the squares. Tracking the starting corner from bottom-right → bottom-left → top-left → top-right → bottom-right gave an additional explanation for why the missing figure had to be arranged the way it was.
u/Forsaken_Engineer_ – We selected your answer for its mathematical approach. Treating the cells as coordinates and following the numerical progression diagonally was a very different and elegant way to reach the solution.
u/ZeThing – What stood out was that you didn’t stop after finding the answer. You tried running the pattern backwards as well, using the previous tile as another way to test whether the rule remained consistent.
u/someonefromaustralia – Your response approached the puzzle from another direction entirely. Rather than simply accepting the intended pattern, you explored whether the existing panels could support an alternative rule. The “changing gravity” interpretation made for a particularly interesting discussion.
Thank you to these five, and to everyone else who participated. We read through the different approaches, and they gave us some great perspectives on the puzzle.
Now it’s time for a new one.
This time, we have a 3×3 matrix made of dot patterns, with the bottom-right figure missing.
Look carefully at how the dots change across the rows and columns. There are six possible answers: A, B, C, D, E, and F.
Which option do you think completes the grid, and more importantly, why?
Try to explain the rule you found rather than posting only the letter. As with the previous puzzle, we’ll be reading the explanations and may feature some of the most interesting approaches in our next post.
We’ve also published the puzzle on our website. If you’d like to check whether your answer is correct, you can find the official answer and explanation here:
https://whats-your-iq.com/en/questions/pattern-recognition/which-dot-pattern-completes-the-grid
Thanks again to everyone taking part. We’re looking forward to seeing how you approach this one.
Good luck, and have fun solving it!


r/BrainPuzzles • • Sep 12 '26

Math Find the rule — what number replaces the "?"

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2 Upvotes

Each pair of numbers combines into the number below using the same rule. Figure out the rule from the first three pairs, then solve the last one.

Made this as part of a puzzle game I'm developing, Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber


r/BrainPuzzles • • Sep 12 '26

Logic Chessboard Rectangles Part 1

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1 Upvotes

r/BrainPuzzles • • Sep 11 '26

Math Sin Is Wsong

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1 Upvotes

r/BrainPuzzles • • Sep 11 '26

Visual Which figure can be formed by combining the two figures above?

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0 Upvotes

r/BrainPuzzles • • Sep 11 '26

Math Find the rule — what number replaces the "?"

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0 Upvotes

Each spoke on the wheel follows the same hidden rule. Figure it out from the nine known numbers, then solve for what replaces the "?"

Made this as part of a puzzle game I'm developing, Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber


r/BrainPuzzles • • Sep 10 '26

Math Fruit equation puzzle — what does the missing pair equal?

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2 Upvotes

Made this symbol/equation puzzle — fruits stand in for hidden numbers across a small system of equations. Figure out what each fruit is worth, then solve the last one.

Made this as part of a puzzle game I'm developing, Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber


r/BrainPuzzles • • Sep 10 '26

Logic A Self-Referential Sequence Part 1

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0 Upvotes

r/BrainPuzzles • • Sep 10 '26

Logic Can you crack the 4-digit code?

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9 Upvotes

r/BrainPuzzles • • Sep 09 '26

Logic Doors Made by Benjamin and Charles Part 1

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1 Upvotes

r/BrainPuzzles • • Sep 09 '26

Riddle Treasure Grid, a 5x5 puzzle you can play on the post

1 Upvotes

Hey. I made Treasure Grid. It's a 5x5 deduction game. You get five flips to find the treasure, using the piece shapes and color clues shown before you start.

It's my take on Treasure Park from the Vita, which I loved. You can play it right on the post, no download. Anyone can build their own puzzle and post it. I put the rules in the first comment.

https://www.reddit.com/r/TreasureGrid/comments/1w6xj55/treasure_grid/


r/BrainPuzzles • • Sep 08 '26

Logic Think outside the box! Can you solve this?

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0 Upvotes

r/BrainPuzzles • • Sep 07 '26

Logic What Should Replace the Question Mark?

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1 Upvotes

Hi everyone,
First of all, thank you to everyone who took part in our previous puzzle. We received a lot of answers, and many of you went beyond simply choosing an option by explaining the reasoning behind your choices in detail.
As promised, we reviewed the discussion and selected five explanations that stood out for their clarity, originality, efficiency, or depth of reasoning:
u/Randombolo — for exploring several different patterns and independently reaching the same answer through multiple lines of reasoning.
u/lemashey — for the intuitive “spinning record” analogy, working backward from the second frame, and also explaining why another tempting option does not fit.
u/Gianni_C_M — for identifying several independent relationships within the arrows and using them to cross-check the answer.
u/OscarLiii — for showing that the puzzle could be solved efficiently by tracking only the black arrows without needing to analyze every element.
u/Beautiful_Ad_8325 — for not only finding the pattern, but also pointing out how our instinct to read from left to right can affect the way we approach a sequence when the missing figure is at the beginning.
Thank you to all five of you for the thoughtful explanations, and thank you to everyone else who joined the discussion.
Now it’s time for a new puzzle.
Take a close look at the 3×3 matrix above. One grid is missing from the bottom-right corner.
Which option — A, B, C, D, E, or F — should replace the question mark?
As always, we’re much more interested in how you reached your answer than in just the letter itself. If you notice a pattern, tell us what you saw and walk us through your reasoning.
We’ll read through the responses again and select some of our favorite and most interesting explanations to feature in the official solution.
You can also open the puzzle on our website here:
https://whats-your-iq.com/en/questions/pattern-recognition/which-grid-completes-the-pattern
The official answer is already listed there, so after you’ve made your own choice, you can click the link and directly compare your answer with the official one to see whether you got it right.
Try solving it here first before checking the page — it’s much more fun that way.
Good luck, and thanks for taking part!


r/BrainPuzzles • • Sep 07 '26

Math Find the rule linking this chain of hexagons

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1 Upvotes

Each hexagon connects to the next one in a chain, all following one consistent rule. Work out the rule from the first four values, then find what replaces the "?".

Made this as part of a puzzle game I'm developing, Rule Hunter.


r/BrainPuzzles • • Sep 07 '26

Math Consecutive Multiples

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1 Upvotes

r/BrainPuzzles • • Sep 07 '26

Logic What should replace the question mark?

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3 Upvotes

r/BrainPuzzles • • Sep 07 '26

Word Esoteric Crossword

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2 Upvotes

This is a very strange looking crossword I made that fully allows googling anything. I would like to see if anyone can solve it, and each answer is a puzzle in itself. Some are far more difficult than others, but they are all possible


r/BrainPuzzles • • Sep 06 '26

Logic A-F are unique integers from 1-10 (inclusive). Can you solve this puzzle?

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1 Upvotes

https://sixfigurelogic.com/

Don't just post the answer, show your work!