Killer Sudoku by Prasanna Seshadri - The Art of Puzzles

Puzzlemaster Prasanna Seshadri constructed this challenging Killer Sudoku with a "T" theme that is key to getting around the grid.

Prasanna Seshadri, Author at The Art of Puzzles

Killer Sudoku Archives - The Art of Puzzles

Killer PS's puzzles +

Other Number Placement Archives - The Art of Puzzles

How small can a sudoku puzzle be? - Quora

What's the logic here? (CTC App, Variety Pack #5) : r/crackingthecryptic

Prasanna Seshadri, Author at The Art of Puzzles

Outside Sudoku by Prasanna Seshadri - The Art of Puzzles

Cracking the Cryptic bei Steam

Other Sudoku Archives - The Art of Puzzles

The Logical World of Puzzles: 2011

What are some lesser known strategies for playing Sudoku? - Quora