Alphabet Cereal
Rules:
- Classic Sudoku:
Every row, column and 3x3 box must contain every number from 1 to 9.
- Sum Letters:
All pairs of orthogonally adjacent digits separated by the same letter must have the same sum. Different letters may not represent the same sum.
- Greater/Less:
If two digits are separated by a “<”, the smaller one in on the side where the “<” points to.
Play it online in SudokuPad.
This puzzle is also on Logic Masters Germany.