2+ hour, 19+ min ago   (83+ words) Spellements: Thursday, January 15, 2026Scientific American Spellements: Thursday, January 15, 2026 By Emma R. Hasson Click the timer at the top of the game page to pause and see a clue to the science-related word in this puzzle! Emma R. Hasson is Scientific American's Games ace…...

23+ hour, 11+ min ago   (111+ words) Expert Sudoku: January 15, 2026Scientific American Expert Sudoku: January 15, 2026 Solve the grid in this expert Sudoku puzzle! The objective of Sudoku is to fill each row, column and sub-grid with exactly one of each number from 1-9. A conflict arises if you repeat…...

1+ day, 22+ hour ago   (83+ words) Spellements: Wednesday, January 14, 2026Scientific American Spellements: Wednesday, January 14, 2026 By Emma R. Hasson Click the timer at the top of the game page to pause and see a clue to the science-related word in this puzzle! Emma R. Hasson is Scientific American's Games ace…...

1+ day, 22+ hour ago   (111+ words) Hard Sudoku: January 14, 2026Scientific American Hard Sudoku: January 14, 2026 Solve the grid in this hard Sudoku puzzle! The objective of Sudoku is to fill each row, column and sub-grid with exactly one of each number from 1-9. A conflict arises if you repeat…...

2+ day, 17+ hour ago   (111+ words) Medium Sudoku: January 13, 2026Scientific American Medium Sudoku: January 13, 2026 Solve the grid in this medium Sudoku puzzle! The objective of Sudoku is to fill each row, column and sub-grid with exactly one of each number from 1-9. A conflict arises if you repeat…...

3+ day, 17+ hour ago   (111+ words) Easy Sudoku: January 12, 2026Scientific American Easy Sudoku: January 12, 2026 Solve the grid in this easy Sudoku puzzle! The objective of Sudoku is to fill each row, column and sub-grid with exactly one of each number from 1-9. A conflict arises if you repeat…...

5+ day, 34+ min ago   (66+ words) Cover Art Jigsaw: July 1930Scientific American Cover Art Jigsaw: July 1930 By Sarah Lewin Frasier To celebrate Scientific American's 180th anniversary, we're publishing jigsaw puzzles to show off some of our most fascinating magazine covers over the years. Take a tour here through…...

5+ day, 20+ hour ago   (83+ words) Spellements: Friday, January 9, 2026Scientific American Spellements: Friday, January 9, 2026 By Emma R. Hasson Click the timer at the top of the game page to pause and see a clue to the science-related word in this puzzle! Emma R. Hasson is Scientific American's Games ace…...

1+ week, 12+ min ago   (133+ words) Killer Sudoku: January 9, 2026Scientific American Killer Sudoku: January 9, 2026 Can you crack Killer Sudoku's mathematical twist? The objective of Sudoku is to fill each row, column and sub-grid with exactly one of each number from 1-9. In Killer Sudoku, the digits in each…...

1+ week, 17+ hour ago   (111+ words) Expert Sudoku: January 8, 2026Scientific American Expert Sudoku: January 8, 2026 Solve the grid in this expert Sudoku puzzle! The objective of Sudoku is to fill each row, column and sub-grid with exactly one of each number from 1-9. A conflict arises if you repeat…...