21 January 2014

Puzzle: 16 coins

I found this puzzle today. I have not tried it myself. But I think you will know when you get the right answer. Further, unlike other times, I am writing this to you on my way out of Atlanta as I commence my business trip, not on my return trip. Which means, I may not be able to check answers till the end of day or in flights…
Do send personal messages only and not comments.

Arrange 16 coins in a simple square of 4 coins by 4 coins. Now, remove 6 coins in a way that every row and every column still has even number of coins left.

Posted January 21, 2014 by Rajib Roy in category "Puzzles


  1. By Rajib Roy on

    Milind, Balaji, Ramesh, Matt, Pradeep, Madhu and Marangatty Karthikeyan got the right answer. Actually there are multiple right answer . Here is one example…

    X . . X
    X X X X
    . . X X
    . X . X


Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.