August 2025
Problem of the Month

Four Square
by Adam Fromm in GAMES

You will need to print this puzzle and use four coins to solve it.

Printer Version

Your task is to place those coins in four different squares of the grid so that every square that contains a coin is true (unoccupied squares may be true or false).



You may send in just the numbers of the four squares that work.

Solution to the Problem:

Here is the solution:

The four squares are 6, 8, 15, and 16.

Correctly solved by:

1. Colin (Yowie) Bowey	Beechworth, Victoria, Australia
2. Seth Cohen	Concord, New Hampshire, USA
3. Kamal Lohia	Hisar, Haryana, India
4. Dr. Hari Kishan	D.N. College, Meerut, Uttar Pradesh, India
5. Davit Banana	Istanbul, Turkey

Send any comments or questions to: David Pleacher