Logic and Number Puzzles Vol 4: Corral, Easy as ABC, Eulero, Faibuseruzu, Light Up, Norinori, Not 4 in a Row, Number Chain, Settokapetto And lots More!: Juice, Puzzle: 9781699705032: Amazon.com: Books
Solving an 'Easy as ABC' Puzzle (not as Easy variant) - YouTube
Easy as ABC by Prasanna Seshadri - The Art of Puzzles | The Art of Puzzles
Easy as ABC by Prasanna Seshadri - The Art of Puzzles | The Art of Puzzles