I found someone who shared a formula that would produce permutations of a factorial up to 10 without VBA. Fortunately I just needed it to go to 9. That's 362,880 permutations. Once I had that, I produced all the sums (answers) for my Circuit Board Square (there are 8 sums per puzzle). I then concatenated those as a single string and did a **=countif** across all those entires.

This **=countif** calculation took ~3 hours to complete since it had to do it against all 362,880 entires. Once that was done I was able to see how many unique entires there were with these permutations for solving the puzzle. Out of 362,880 permutations, there were 213,248 entries with a count of 1.

It was important for me to determine these individual permutations because I'd hate to be in a position where I randomly inserted numbers, got sums, and realized there were multiple answers. An answer key that had a different answer than yours, which may also be valid, is a bad puzzle experience.

Now I have 213,248 puzzles to choose from. I think that's pretty good for a 100 page starter book!

]]>I took the standard "fill the 3x3 with numbers 1-9" and started messing around with the sums of different blocks. Sujiko puzzles add circles on the four main intersections and provide those as sums to help you figure out how to place 1-9 inside. I decided to see what would happen if you add other portions together instead.

The result was a rather pretty looking circuit board looking puzzle. Maybe I'll call it a Circuit Board Square?

I have to run some calculations to see if the permutations in the 3x3 can create the 9! unique answers.

]]>What are they? Here are the rules.

- Fast play: All players must be able to play at the same time
- Fast action: All players share the same result, but have a choice on what to do with it
- Inclusive: All games can be played by 1+ players and quick to learn (i.e. can I teach this to my 5 year old)
- Affordable: Have limited components and a print-and-play version is already available

My newest Kickstarter, Blankout, is another example of this. I'll be working on games like this for a while. I'll leave all that heavy cardboard stuff to the pros.

**Kickstarter Link:** Blankout on Kickstarter

Go get it for free at your local iTunes / iBooks store!

Link: iBooks Link

]]>That's the family's feet. Made this for Josie's grandma. More like **FEET**hearts, amirite?

Like, go cop a copy of it over at itch.io. It's free.

]]>A 9x9 board is much better! Using highlighters also makes for a much more interesting board at the end.

]]>An 11x11 board is too big! The shapes are also too small. You're able to really pack them into places easily. Need to extend them a little bit.

]]>Created some V1 boards for the Blankout game.

]]>I visited my parents in Oregon.

]]>Visited my parents in Oregon.

]]>Visited my parents in Oregon.

]]>Read the full strip over on Instagram.

]]>Simple roll-and-write design that has players filling in a grid with touching tetrominoes. If you are unable to fill in a valid spot, you lose. I may do a short/small KS for this one.

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