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Showing posts from July, 2026

Calendar Puzzle, Double Panel, Multi-Level Challenges

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  Introduction This is a fun twist on the daily calendar puzzle ! Instead of just one rectangular panel, we have two panels on the playing board, as you can see in the picture below. The two panels aren’t connected, so each polyomino piece can only fit in one of them. The panel on the left shows the months and days of the week, while the larger panel on the right displays the days of the month. Just a heads-up, there are two empty squares, one on each panel. This puzzle features ten polyominoes, as you can see in the image above. Each polyomino piece has a dot on one side, and the other sides are clear. You can find the svg file for laser cutting/engraving machine at ATOMM ,  MakerWorld  and  CuttingPATH How to Play? The goal of this puzzle is to show three squares representing the date (month, day of month and day of week), while covering all other squares (including the two empty ones) using the ten polyominoes, like the picture below. Here are three ways to p...

Double Diamond Calendar Puzzle, Triangular Grid

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Introduction Calendar puzzles  can be found in all sorts of shapes, not just squares! This post is about a fun one using a triangular grid. You can see the board layout and pieces below. The board on the left is shaped like a diamond, made up of 56 equilateral triangles. It’s divided into three sections: the upper left for months, the lower one for days of the week, and the rest for days of the month. Each equilateral triangle has a date element, except for six that are empty. Most of these empty triangles are needed to make the puzzles solvable. Now, the nine pieces above are also made of equilateral triangles. These shapes are called polyiamonds , and here we use one heptiamond, six hexiamonds, and two pentiamonds. and here we’re using one heptiamond, six hexiamonds, and two pentiamonds. You might have noticed one of the pieces is a diamond! That’s why this puzzle is called Double Diamond because of the small diamond piece and the large diamond board. You can find the svg file fo...

3-in-1 Squeeze-Them-In Puzzle

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Cut and assembled puzzle, ready-to-play setup Introduction You can find the laser-cut/engrave SVG file of this puzzle at  ATOMM , MakerWorld  and  CuttingPath This 3-in-1  Squeeze-Me-In  puzzle comes with a square board, three small pieces, and nine large pieces. As you can see in the picture above, the three small pieces are tucked into the three small empty cutouts, just like they look. The nine large pieces are arranged to fit snugly into the square board. The picture below shows how the puzzle looks before all the pieces are on the boards. There’s a little figure in the lower right corner of the square board that shows you how to put the nine large pieces back into the ready-to-play setup. The challenge here is to fit one of the tiny pieces into the big square board, along with the nine bigger pieces, without any of them overlapping. You’ll probably have to shuffle, turn, and flip all ten pieces to get it right. This puzzle is a triple threat because it has ...

Calendar Puzzle, Month + Day of the Month + Day of the Week, Square Grid

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Introduction This puzzle further extends  Day of the Month puzzle  and Month + Day of the Month puzzle to include the Day of the Week, so there are three squares that you'll need to show while covering all other squares, like the picture above. With the increased complexity,  the board now has a total of 50 squares and we will use ten polyominoes as shown in the image below. Again, each of the ten polyomino pieces has a dot on one side,  while the other sides are clear You can find the svg file for laser cutting/engraving machine at  ATOMM , MakerWorld  and  Cutting Path How to Play? Here are three ways to play: Easiest : Give it a shot by rotating, moving, and flipping all ten pieces, but don’t worry about the dots. Computer simulations show that there are about 7,318 solutions per date in average from all 2,562 (=366x7) dates, and every date has at least 248 solutions!  A solution to solve June 9 Wednesday is shown below and you see some p...

Calendar Puzzle, Month + Day of the Month, Square Grid, Multi-level Challenges

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  Introduction As one of the  calendar puzzles , this puzzle takes the  Day of the Month puzzle  to the next level by adding months. Now the board has 12 extra squares representing January to December, as you can see in the image below.  This makes it a bit like the classic  A-Puzzle-A-Day . However, our puzzle has a unique board layout and some multi-level challenges that we’ll explore later.  Just like the Day of the Month puzzle , this one uses the same six polyomino pieces, plus two new ones, bringing the total to eight polyomino pieces, as shown in the image below. Just a heads-up: each of the eight polyomino pieces has a dot on one side, as shown above. The other sides are clear You can find the svg file for laser cutting/engraving machine at  ATOMM , MakerWorld and  Cutting Paths How to Play? Think of it as a fun twist on A-Puzzle-A-Day! Your goal is to cover all the squares with the eight polyomino pieces, except for the target ...

Calendar Puzzle, Day of the Month, Square Grid, Multi-level Challenges

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  Introduction Starting with a  calendar puzzle  featuring just the days of the month is a fantastic way for beginners, kids, or anyone else to get into this kind of puzzle. Pick a day number between 1 and 31 that catches your eye, like today’s or a particularly interesting day, and give it a shot! In this post, we’ll share a design using a square grid and  polyomino  pieces, along with a discussion about it. You can find the svg file for laser cutting/engraving machine at  ATOMM , MakerWorld and  Cutting Paths The Design The design features an asymmetrical board layout where the days of the month are arranged horizontally and downward from 1 through 31, as you can see below. The board after gluing the top frame piece on the days base from laser cut file This puzzle uses six polyomino pieces, which include four  pentominoes , one  hexomino and one  tetromino . When you put them all together, they cover exactly 30 squares, and you get t...