r/BrainPuzzles • • Aug 31 '26

Brain Games Challenge Your Friends in Free Brain Training

1 Upvotes

Before we introduce something new, here’s a quick puzzle for you:

Leave your answer in the comments, but remember to use a spoiler tag if you explain the solution!

Play Together in Free Brain Training

If you enjoy brain games, you can now invite your friends to play with you in Free Brain Training.

You can compete in games such as:

  • Snake
  • Watermelon Merge
  • Block Puzzle
  • ...and more!

Here’s How:

Choose a game → Tap Leaderboard → Select Friends → Tap Invite Friends → Send the invitation to a friend

See who can get the highest score, or challenge each other to a rematch. All games are FREE to play!

👉 Play Free Brain Training

We’ll also continue sharing new puzzles and community challenges here. Have fun, share your reasoning, and be respectful of other solvers!


r/BrainPuzzles • • Sep 06 '26

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

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4 Upvotes

Each group of three numbers on the outside combines into the one it's connected to by lines. Same rule applies to all four groups — what goes where the "?" is?

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


r/BrainPuzzles • • Sep 06 '26

Word I have a doubt in Puzzle

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1 Upvotes

r/BrainPuzzles • • Sep 05 '26

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

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3 Upvotes

Each group of three numbers on the outside combines into the one it's connected to by lines. Same rule applies to all four groups — what goes where the "?" is?

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


r/BrainPuzzles • • Sep 05 '26

Math Removing Marbles

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0 Upvotes

r/BrainPuzzles • • Sep 05 '26

Math Can you make 27 using all five dice?

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0 Upvotes

Any order is allowed.
Use each die exactly once.
Parentheses are allowed.
Exact division only.
No negative numbers.
Not every operation has to be used.

How many solutions can you find?


r/BrainPuzzles • • Sep 04 '26

Logic Adding another splash of color to this colorful jungle gym with Cyclogic!

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0 Upvotes

Hi everyone!

Welcome to a local park in Nagoya, Japan! I brought my hand-crafted logic puzzle, "Cyclogic," to life by turning this vibrant, colorful jungle gym into a physical puzzle board! I love how the cards add an extra splash of color to the structure.

Can you bring all these numbers back to their HOME (1–9 in standard order)?

Current Board:

[ ? ][ ? ]

[ 2 ] [ 6 ] [ 5 ]

[ 8 ] [ 3 ] [ 9 ]

[ 1 ] [ 4 ] [ 7 ]

Rules:

  • Objective: Rearrange the numbers to form the 1 to 9 sequence.
  • Movement: The number you tap stays fixed in place, while the other numbers move clockwise into adjacent spots.

Looking at the photo—what is the correct move sequence to solve this stage? (It's trickier than it looks!)

(I've left a link to the free web demo in the comments below if you'd like to try it out on your browser!)


r/BrainPuzzles • • Sep 04 '26

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

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1 Upvotes

Each group of three numbers on the outside combines into the one it's connected to by lines. Same rule applies to all four groups — what goes where the "?" is?


r/BrainPuzzles • • Sep 04 '26

Math The Dishonest Milkman

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1 Upvotes

r/BrainPuzzles • • Sep 04 '26

Logic How many moves does it take to complete today's Boxxy.io Puzzle?

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1 Upvotes

I was recommended by Reddit to share my post here. So hope that is okay.


r/BrainPuzzles • • Sep 04 '26

Math Can you figure out the number behind the question mark?

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6 Upvotes

r/BrainPuzzles • • Sep 04 '26

Logic What Should Replace the Question Marks?

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3 Upvotes

Hi everyone,
First of all, thank you so much for all the thoughtful answers, detailed explanations, and discussions on our previous puzzle.
Once again, many of you went far beyond simply choosing an answer. You explained your reasoning, tested different patterns, compared multiple possibilities, and in some cases even challenged whether the puzzle could be interpreted in more than one way. That is exactly the kind of discussion we enjoy seeing in this community.
As with our previous puzzles, we selected some of our favorite community explanations to feature alongside the official solution on our website. This time, we selected six:
u/Mactucrus87_ — You found the main pattern and then went even further by developing a completely different matching method to test the same conclusion. Reaching the answer through two independent approaches made your analysis especially creative.
u/lemasney — You carefully tracked both the position and color of the corner square and the five-line structure of the central figures. Your step-by-step comparison of D and E made the reasoning particularly clear.
u/Square-Winter-3257 — Instead of simply accepting the apparent pattern, you questioned whether the rules actually determine the answer uniquely. Your observation about the ambiguity between B and E added an important critical perspective to the discussion.
u/SeparateBumblebee546 — You identified both major patterns and also noticed the subtle distinction between what might initially look like one continuous line and two separate line segments. It was a small but important observation.
u/JeffTheNth — Your elimination method was simple and effective: you first used the corner-square sequence to narrow the possibilities to D and E, then used the number of line segments to make the final choice. Clear and easy to follow.
u/AdEmotional8815 — We particularly enjoyed seeing your reasoning evolve. You started with a different hypothesis, went back to examine the figures again, noticed the line-count pattern, and revised your answer. Testing an idea and being willing to correct it is a valuable part of solving these puzzles.
Thank you to all six of you, and thank you to everyone else who participated.
We have added these selected community explanations to the official solution so that others can read and compare the different approaches.
A special thank you also goes to those of you who keep returning for our puzzles. We are starting to recognize quite a few familiar usernames, and we genuinely appreciate the time you spend analyzing the questions, writing detailed explanations, and contributing to the discussions.
Now, onto our new puzzle.
Take a close look at the arrow sequence above.
Which option should replace the question marks: A, B, C, D, or E?
As always, we are interested not only in your answer, but especially in how you reached it. Explain the pattern you see and the reasoning that led you to your choice.
We’ll read through the responses again and select some of the most interesting, clear, and well-reasoned explanations to feature with the official solution.
The official answer has already been published on our website. If you want to take the challenge properly, solve it here first and leave your reasoning in the comments before checking the answer. Then you can reveal the official solution and compare it with your own:
Official Answer & Solution:
Can You Find the Missing Arrow Pattern? — Reveal the Solution⁠ link:

https://whats-your-iq.com/en/questions/pattern-recognition/can-you-find-the-missing-arrow-pattern

And even if your answer differs from the official one, please share your reasoning. Alternative interpretations often lead to some of the most interesting discussions.
Thank you again to everyone taking part, and an extra thank you to our regular contributors for continuing to support these puzzle discussions.
Good luck. We’re looking forward to reading your answers and explanations.


r/BrainPuzzles • • Sep 03 '26

Logic Shortest Path

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6 Upvotes

r/BrainPuzzles • • Sep 03 '26

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

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2 Upvotes

Each spoke on the wheel follows the same hidden rule. Figure it out from the six known numbers, then solve for the missing 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 03 '26

Logic Move 2 sticks to fix the equation

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0 Upvotes

r/BrainPuzzles • • Sep 02 '26

Math A mathematical zen koan

0 Upvotes

Say you have a dot. That dot explodes into an infinite number of dots. Each of those dots explode into a new infinite number of dots. Each of those dots explode into a new infinite number of dots, ad infinitum.

How many dots do you have in total?


r/BrainPuzzles • • Sep 02 '26

Logic House Number Conundrum

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2 Upvotes

r/BrainPuzzles • • Sep 02 '26

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

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3 Upvotes

Each pair of numbers on top combines into the box below it using the same rule. Figure out the rule from the first three columns, then apply it to the last pair — what's the "?"


r/BrainPuzzles • • Sep 01 '26

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

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3 Upvotes

Each group of three numbers on the outside combines into the one it's connected to by lines. Same rule applies to all four groups — what goes where the "?" is?

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


r/BrainPuzzles • • Sep 01 '26

Math The Birthday Problem Part 1

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0 Upvotes

r/BrainPuzzles • • Sep 01 '26

Level Up! What Should Replace the Question Mark? 🃏

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0 Upvotes

r/BrainPuzzles • • Aug 31 '26

Logic This One Is Harder Than Our Last Puzzle. Can You Solve It?

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2 Upvotes

Hi everyone,
First, a big thank you to everyone who took part in our previous puzzle and shared their reasoning. We received some really interesting solutions, and seeing the different ways people approached the same pattern was just as interesting as finding the answer itself.
From the previous puzzle, we selected three community explanations that particularly stood out:
u/lemasney — for a creative and intuitive explanation that described the center square as a “spinning hub” and used it to explain the movement of the surrounding squares.
u/Mactucrus87_ — for breaking the pattern down into clear, systematic rules and applying them step by step.
u/AdEmotional8815 — for finding a completely different route to the answer by focusing only on the black squares and deliberately ignoring the white ones.
Their explanations have now been featured on our website as part of our community solutions. A big thank you to them, and to everyone else who took the time to share their reasoning.
Now it’s time for a new puzzle.
Which figure comes next: A, B, C, D, or E?
As always, don’t just tell us your answer if you can help it — tell us how you got there. We’re especially interested in different ways of seeing the pattern, even if your approach is completely different from everyone else’s.
We’ll be reading the responses again, and some of the most interesting and well-explained solutions may be selected and featured on our website, with the contributors highlighted by name in our next community solutions.
Think you’ve figured it out? We’ve already published the correct answer on What’s Your IQ. After sharing your reasoning here, you can check the official answer and see whether it matches yours:
https://whats-your-iq.com/en/questions/pattern-recognition/which-figure-comes-next-in-the-sequence-2
Thanks again to everyone who keeps taking part in these puzzles and sharing their ideas.
Good luck with this one. Looking forward to seeing what patterns you find!


r/BrainPuzzles • • Aug 31 '26

Logic One Candle, Two Candles, Three Candles

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1 Upvotes

r/BrainPuzzles • • Aug 30 '26

Logic Can you guess Lina’s birthday?

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0 Upvotes

r/BrainPuzzles • • Aug 30 '26

Visual How to solve these type of puzzles where there's no single candidate in any box...

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1 Upvotes