Letter puzzles

• Mazes: path goes through numbers
• Word searches : left-over letters are the solution
• Cryptograms Apply a letter substitution. Take into account the letter frequencies, if possible. Letters frequencies English: ETAORISHD
• Crosswords
• Anagrams
• Sudoku and variations
• KenKen
• Kakuro
• Nonograms - Griddlers - Picross
• Stereograms