Perfect Squares Sudoku Puzzle (Fun With Sudoku #310)

Over the past few years, I have seen names getting changed for  Sudoku puzzles. Dots Sudoku became Kropki Sudoku over some period of time. Assigned Sums Sudoku became Arrow Sudoku. Perfect Squares Sudoku first appeared in 1st round of the Sudoku Grand Prix 2015. However that time only horizontal occurrences of perfect squares were marked with square shapes between the cells. Then this Sudoku type was changed to include even vertical perfect squares and it was named  Square Numbers Sudoku Now Perfect Square Sudoku appears again which has the same rules as Square Numbers Sudoku. Square Numbers Sudoku appeared in one of the World Sudoku Championships with the same name. However, now it is appearing in the 4th Round of the Sudoku Grand Prix 2018 with the name Perfect Square Sudoku. To me both the names look good as both describe this Sudoku type very well. Anyway, I am publishing this Perfect Squares Sudoku as part of the Fun With Sudoku Series as the 310th Sudoku Puzzle in this Series.

Rules of Perfect Squares Sudoku Puzzle

Standard Sudoku Rules apply. If two horizontally or vertically adjacent cells (read from left to right and from top to bottom) form a two-digit perfect square, it is marked by the symbol S. All two-digit perfect squares are marked.
Perfect Squares Sudoku Puzzle (Fun With Sudoku #310)
Perfect Squares Sudoku Puzzle (Fun With Sudoku #310)
The answer to this Perfect Squares Sudoku puzzle can be viewed by clicking on the button. Please try your best to solve this Sudoku puzzle before looking at the answer.

This Perfect Squares Sudoku Puzzle I am publishing as the #310th Sudoku puzzle in the Fun With Sudoku Series. Here are the next and previous Sudoku puzzles published in this series.
The previous Sudoku Puzzle is Double Kropki Sudoku (Fun With Sudoku #309)


Rakesh said...

11.20 - I found it very hard to spot the eliminations due to converse rule.

Rajesh Kumar said...

Yes, this Perfect Square Sudoku puzzle use converse rule at many places to proceed. Yesterday I created two puzzles and this one was hard one. However I feel that this one will be good practice for Sudoku GP.
Anyway, thanks for your feedback.

kishy said...


Aashay Patil said...

22:08, struggled a lot with the converse rule..:(