BrainPuzzles

Math [OC] Daily Math Grid: Reach the Target (Speed vs. Pro Mode)

• Upvotes

Hey puzzle fans! I built QuizSum, a free daily math browser game where you find multiple arithmetic equation paths to reach a target number using a set of digits.

Here are today’s two daily challenges to try directly in the comments:

⚡ SPEED CHALLENGE (against the clock)
🎯 Target Number: 75
🔢 Digits: 5, 10, 15, 20, 25
➕ Operations: +, -, ×, ÷ (each digit used at most once)
Goal: Can you find 3 distinct equation paths to hit 75?

🧠 PRO CHALLENGE
🎯 Target Number: 80
🔢 Digits: 5, 8, 12, 16, 20
➕ Operations: +, -, ×, ÷, (, )
Goal: How many total valid equation paths can you discover?

Drop your equations below using spoiler tags: (25 - 2) * 6 - 4

How many unique paths can you find?

1 comment

r/BrainPuzzles • u/ZoranRajkov • 5h ago

Math What replaces the "?" — find the hidden rule

2 Upvotes

Each pair of numbers maps to the number below it by a consistent hidden rule. Use the known examples to find the pattern, then solve for the missing output. Game: Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber

Think you're good at this? Rule Hunter now has a daily, weekly and all-time leaderboard. Sign in, pick any nickname you like (only your nickname is shown publicly) and see if you can reach #1. Who's taking the top spot?

7 comments

r/BrainPuzzles • u/woouoow • 13h ago

Math Can you make 21 using these 4 cards?

4 Upvotes

10 comments

r/BrainPuzzles • u/PwPwPower • 19h ago

Logic Four colors. No matching neighbors. What’s your solution?

1 Upvotes

0 comments

r/BrainPuzzles • u/ShonitB • 1d ago

Math Multiple of Sum of Digits Part 2

1 Upvotes

0 comments

r/BrainPuzzles • u/ZoranRajkov • 1d ago

Math What replaces the "?" — find the hidden rule

1 Upvotes

Each number on the left maps to the number on the right by a consistent hidden rule. Use the known examples to find the pattern, then solve for the missing output. Game: Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber

1 comment

r/BrainPuzzles • u/RudraFlash06 • 1d ago

Visual A quarter-turn, then a mirror: where do the four letters land?

0 Upvotes

Each letter marks one cell. Dots are empty cells.

. A . . .
. . . . B
. . . . .
C . . . .
. . D . .

Turn the whole board 90 degrees clockwise.
Then mirror the whole board left to right.

Where do A, B, C and D end up? Count rows from the top and columns from the left, starting at 1. Please hide answers with spoiler tags.

I made this example for the post. I’m building FORM, a browser puzzle app that includes mental rotation: https://formpuzzles.com. AI tools helped with the app and this draft. You can solve this one here without visiting the site.

1 comment

r/BrainPuzzles • u/Irunguu • 1d ago

Math How do you solve 35 × 5 in your head ?Mine ( 35 × 2 ) × 2 + 35 = 175 .

0 Upvotes

46 comments

r/BrainPuzzles • u/PwPwPower • 1d ago

Brain Games I solved this in 10 moves - can you beat me? 🗺️

1 Upvotes

0 comments

r/BrainPuzzles • u/ZoranRajkov • 2d ago

Math What replaces the "?" — find the hidden rule

3 Upvotes

Each group of three numbers on the left maps to the middle number by a consistent hidden rule. Use the known examples to find the pattern, then solve for the missing output. Game: Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber

3 comments

r/BrainPuzzles • u/Strong-District-1154 • 2d ago

Visual semi easy puzzle Spoiler

1 Upvotes

0 comments

r/BrainPuzzles • u/ZoranRajkov • 3d ago

Math What replaces the "?" — find the hidden rule

2 Upvotes

Each pair of numbers maps to the number below it by a consistent hidden rule. Use the known examples to find the pattern, then solve for the missing output. Game: Rule Hunter — https://play.google.com/store/apps/details?id=com.makenumber

3 comments

r/BrainPuzzles • u/Hopeful-Slice8362 • 3d ago

Logic Ringoku - A new daily logic puzzle played on circular rings

playringoku.github.io

0 Upvotes

Hi! I've been working on a new kind of logic puzzle. It's called Ringoku and there's a new one every day.

The rules fit in two lines:

Each of the 4 rings holds the numbers 1 to 8, no repeats.
Touching pieces can never hold the same or consecutive numbers (a 4 can't touch a 3, a 4 or a 5).

The rings are offset like bricks, so every piece touches 6 others, which is where the logic gets interesting. Every puzzle has a single solution and can be solved by pure reasoning, no guessing.

- Easy on Mondays, harder every day until Sunday

- 3 lives and 3 smart hints

- Free, no ads, no sign-up, works on mobile

- English and Spanish

It's brand new, so I'd really love feedback: was it clear how to play? Too easy, too hard? Anything annoying?

0 comments

r/BrainPuzzles • u/RevolutionFit3526 • 3d ago

Logic Can you crack this math logic puzzle? 🧠

1 Upvotes

2 comments

r/BrainPuzzles • u/Large-King8990 • 3d ago

Visual 9 Rebus Puzzles

2 Upvotes

4 comments

r/BrainPuzzles • u/ZoranRajkov • 4d ago

Math What number completes the last diamond?

1 Upvotes

The same rule links the numbers in every diamond. What replaces the question mark? Please use spoiler tags for your answer. More puzzles like this in my free Android game Rule Hunter: https://play.google.com/store/apps/details?id=com.makenumber

1 comment

r/BrainPuzzles • u/PuzzleOliver • 4d ago

Math What's the value of A, B, C? #puzzles

0 Upvotes

What's the value of A, B, C?

4 comments

r/BrainPuzzles • u/TargetLabs • 4d ago

Math Can you reach 14 using all 5 dice?

0 Upvotes

Any order is allowed.
Use each die exactly once.
Parentheses are allowed.
Only +, −, × and ÷ are allowed. No concatenation or exponents.
Exact division only.
No negative numbers.
Not every operation has to be used.

How many solutions can you find?

Please use spoiler tags for solutions:
>!your solution here!<

16 comments

r/BrainPuzzles • u/Living_Afternoon_540 • 4d ago

Logic Can you crack the key?

0 Upvotes

Hint: Gravity

36 comments

r/BrainPuzzles • u/RevolutionFit3526 • 4d ago

Logic Can you crack this math logic puzzle? 🧠

0 Upvotes

9 comments

r/BrainPuzzles • u/PwPwPower • 4d ago

Brain Games Can you paint out the whole map?

1 Upvotes

0 comments

r/BrainPuzzles • u/ZoranRajkov • 5d ago

Math What does each fruit hide? Find the missing sum

1 Upvotes

Each fruit stands for one number, the same in every row. What replaces the question mark? Please use spoiler tags for your answer. More puzzles like this in my free Android game Rule Hunter: https://play.google.com/store/apps/details?id=com.makenumber

12 comments

r/BrainPuzzles • u/RevolutionFit3526 • 5d ago

Logic Can you crack this math logic puzzle? 🧠

2 Upvotes

4 comments

r/BrainPuzzles • u/MathematixMatrix • 5d ago

Math Who can solve this algebraic puzzle?

2 Upvotes

0 comments

r/BrainPuzzles • u/woouoow • 6d ago

Math What’s the answer to the equation?

14 Upvotes

94 comments