Sudoku from The New York Times: Puzzles for Licensing

Sudoku is one of the most popular puzzles of all time. Based on the logical placement of numbers, the goal is to fill in a 9x9 grid with digits so that each column, row, and 3x3 section contains numbers between 1 to 9. No math skills are required, just logic, to fill in the missing digits and complete the grid. 

• Year Founded: 1979
• Editors: Will Shortz, Peter Ritmeester
• Frequency: Daily

Access six Kakuro and two Hyper-Sudoku puzzles weekly for print. Puzzles increase in difficulty over the course of the week. Interactive Sudoku available daily for online use only.

Will Shortz is an American puzzle creator and editor and crossword puzzle editor for The New York Times. He is also the puzzle master on Weekend Edition Sunday since the program was started in 1987. 

• Occupation/Role: Puzzle Creator, Editor
• Education: Indiana University, University of Virginia School of Law
• Companies: The New York Times, NPR
• Years Active: 1989 - Present
• Awards: Sam Loyd Award

Peter Ritmeester is the CEO of PZZL.com, and General Secretary of the World Puzzle Federation for 12 years. He is the inventor of both Hyper Sudoku and Sixy Sudoku. His HIs puzzles have been published in 500+ books, The New York Times, on the cover of Games Magazine, and 100+ other media on all continents except Antarctica. 

• Occupation/Role: Inventor, Editor
• Education: University of Amsterdam 
• Companies: The New York Times, World Puzzle Federation