 the shape of a quincunx is known in Japan as Gattai 5 (five merged) Sudoku. In The Times, The Age and The Sydney Morning Herald this form of puzzle is known as Samurai SuDoku. The Baltimore Sun publishes a puzzle of this variant (titled High Five) in their sunday edition. Puzzles with twenty or more overlapping grids can be found in some Japanese publications.[තහවුරු කර නොමැත]  Often, no givens are to be found in overlapping regions.  Sequential grids, as opposed to overlapping, are also published, with values in specific locations in grids needing to be transferred to others.Alphabetical variations have emerged; there is no functional difference in the puzzle unless the letters spell something.  Some variants, such as in the TV Guide, include a word reading along a main diagonal, row, or column once solved; determining the word in advance can be viewed as a solving aid.  A more loose variant on the sudoku concept is seen in Squaro, wherein circles at the vertices of a grid are fille