### Lewis Holland

Puzzles(Fall 2020-), Puzzles Editor (Spring 2021-), lholland30@stuy.edu

**Puzzles**

### Tic Tac X

*by Lewis Holland*| August 2021

Consider the 3-by-3 board above. Each disk moves like a knight in chess, two squares one direction and then one square to a direction 90 degrees to the left or right.

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### Moving Circles

*by Lewis Holland*| August 2021

Consider the 3-by-3 board below. Blue disks move like knights, two squares in one direction and one square in another direction 90 degrees to the right or left.

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### Checker Board

*by Lewis Holland*| Feb 2021

This puzzle’s goal is to switch the positions of the stacks of disks in the 2 by 2 grid. It is related to the Towers of Hanoi problem, except there are two sets of disks that cannot share a square with disks of the other color and there is a 2 by 2 grid instead of 3 towers.

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