Puzzle
Sudoku
Size: 6x6 (size6), 9x9 (size9)
Standard Sudoku puzzle.
Complete the puzzle by filling in one each of 1~9 (1~6 in size6) into every tiles with rules:
each row contains 1~9 without repeat.
each column contains 1~9 without repeat.
each neighbor of 3x3 (3x2 in size6) contains 1~9 without repeat.
Jigsaw Sudoku
Size: 6x6 (size6), 9x9 (size9)
Variant of Sudoku puzzle.
Complete the puzzle by filling in one each of 1~9 (1~6 in size6) into every tiles with rules:
each row contains 1~9 without repeat.
each column contains 1~9 without repeat.
each neighbor of 9 tiles (6 in size6) with varies combination contains 1~9 without repeat.
Inequaliy
Size: 5x5 (size5), 7x7 (size7)
Grid puzzle using inequality sign.
Complete the puzzle by filling in one each of 1~7 (1~5 in size5) into every tiles with rules:
each row contains 1~7 without repeat.
each column contains 1~7 without repeat.
numbers of any two tiles, with inequality sign between them, should be strictly larger than or smaller than the other based on the sign.