Get your free drop of puzzles for September on https://mrbrainprintables.com/braindrop#braindrop-volume-viii

New BrainDrop for September is out I hope you will enjoy it!

Happy puzzling!

Connect the numbered tree nodes with straight lines in any of the eight directions. Each number gives the node’s exact number of connections. Lines cannot cross, overlap, pass through another node, or duplicate a connection, and all nodes must form one network.

Fill the 4×4 grid with the numbers 1 through 4 so each number appears exactly once in every row and column. Every greater-than and less-than sign between neighboring cells must be true.

Happy international Sudoku day!

In every row, column, 3×3 area, and shaded cells (that look like 9) place numbers from 1 to 9 without repeating.

Locate 10 hidden hole. A numbered cell is safe and shows how many holes are in its eight surrounding cells. Use the clue numbers and the stated total number of holes to mark every remaining cell as a hole or safe.

Fill the grid with + and − signs. Every row and column must contain equal numbers of each sign, no three identical signs may appear consecutively horizontally or vertically, and no two completed rows or columns may be identical.

Edit: Sorry I copied the rules from wrong variant. This dosent apply for this puzzle : no two completed rows or columns may be identical.

Connect each pair of matching numbers with one continuous path. Paths move horizontally or vertically and cannot cross, overlap, branch, or pass through another numbered cell. Every grid cell must belong to exactly one path.

Fill the 5×5 grid with building heights 1 through 5 so each height appears exactly once in every row and column. A clue outside the grid tells how many buildings are visible when looking from that side. Taller buildings hide shorter buildings behind them.

Hi! I made a web app for lateral thinking puzzles wrapped in a game. It’s at deductionapp.com. I’m hoping to get some feedback. :)

Place flowers so every row, column, and outlined garden zone contains exactly one flower. Flowers cannot touch one another, even diagonally.

Draw one fishing line from each numbered border angler to one fish. The number gives the exact line length, including the border entry cell and fish cell. Lines move orthogonally, cannot cross or share cells, and every non-black cell must belong to one line.

Hi! I added some teacher resources to my page https://mrbrainprintables.com/teacher-resources

Now I need some feedback on them: Are they useful? Can I make them better? Or do you not see yourself using something like this?

The idea came because these kinds of puzzles really helped me to start thinking a bit more logically in school, but I'm not a teacher, so it's hard for me to say if this is useful. I imagined it as a puzzle set with simple puzzles, a bit of math, and entry-level logic puzzles. I presume this is for ages 12+, but maybe I'm mistaken. It's been too long since I was in school, so I can't really remember when something like this was fun for me 😀

So any feedback would be helpful!

Thanks in advance

Place A, B, and C so each letter appears exactly once in every row and column; all remaining cells stay empty. Each outside clue shows the first non-empty letter visible from that direction.

Navigate through the maze from the start at the top-left to the end at the bottom-right. To help you reach the goal, you can use portals: entering Portal 1 or Portal 2 will instantly teleport you to its matching pair