Sudoku Puzzles

Two Sudoku Puzzles. In the AI History Sudoku, each row, each column, and each 3x3 box must contain every number from 1 to 9. In the Letter Sudoku, each row, each column, and each 3x3 box must contain each of the 9 different letters. If completed properly, a nine letter word will be revealed. Clue: CSP Pioneer.