 Using this strategy, one or more known Sudokus which satisfy or nearly satisfy the characteristic being searched for is used as a starting point, and these Sudokus are then altered to look for other Sudokus with the property being sought.The alteration can be relocating one or more clue positions, or removing a small number of clues, and replacing them with a different number of clues.For example, from a known Sudoku, a search for a new one with one fewer clues can be performed by removing two clues and adding one clue in a new location.