by MathPickle | Mar 24, 2023 |
Glue (MathPickle 2021) This geometric square-gluing puzzle is one of my best from 2021. The rules are simple (but probably best seen on the video rather than read): 1) Start with two 1×1 squares labelled “1.” 2) Glue a new square labelled with one...
by MathPickle | Oct 5, 2021 |
Coins in a Row (Peter Winkler 2003) This is not an original MathPickle puzzle. It’s from Mathematical Puzzles: A Connoisseur’s Collection (163 pages, 2003) by Peter Winkler. Spoiler Alert! The solution is in the video below. Teaching is an...
by MathPickle | Jul 30, 2021 |
Rainbow Sudoku (MathPickle 2021 – Inspired by Amar Sodhi) In regular sudoku and pentomino sudoku numbers are given as clues. Each region needs exactly one copy of each number. That’s true whether the regions are 3×3 squares or pentominoes. In Rainbow...
by MathPickle | Mar 11, 2020 |
Treefolk Tribes (MathPickle 2020) This puzzle doesn’t have a strong endpoint – you’re exploring for the sake of exploring! Organizing these Treefolk based on their symmetry – whether they want you to or not 😉 Here is a pdf of the seven...
by MathPickle | Mar 10, 2020 |
Emoji Democracy Democracies can be attacked by altering the boundaries of voting regions. This has been done in many countries from Apartheid’s South Africa to Hong Kong under the Chinese Communist Party. Its English word is “gerrymandering.” In this...
