Kakuro (originally called Cross Sums) is a logic-based, math puzzle. The objective of the puzzle is to insert a digit from 1 to 9 inclusive into each white cell such that the sum of the numbers in each entry matches the clue associated with it and that no digit is duplicated in any entry. FEATURES: - modern layout - five different difficulties - hundreds of puzzles for each difficulty - auto-save your progress for each puzzle - unlimited undo/redo - color input system for experts - clean inter