1 Hitori - a logic puzzle Hitori is another logic puzzle with numbers like [Sudoku]. There is also some information on {link:Hitori - Wikipedia|http://en.wikipedia.org/wiki/Hitori}. A Hirori puzzle is a grid of squares which are filled with numbers. At the beginning all numbers are not marked. The goal of the game is to paint out some numbers to fulfill the following three basic rules: * Two __black__ cells cannot be connected horizontal or vertical. Diagonal is allowed. * In each row and each column of the grid no __white__ duplicate numbers are allowed. * All __white__ cells needs to be connected orthogonally at the end. Diagonal is not enough. There is a Java ([midlet]) hitori game for your mobile: [just1] {table} Example puzzle | Solution {image:img=example.jpg|alt=example|align=float-left} | {image:img=solution.jpg|alt=solution|align=float-left} {table} {table} Explaination of rules| Not allowed: orthogonal pair of __black__ numbers | Mark all neighbours of a __black__ cell as __white__ {image:img=blackPair.jpg|alt=orthogonal pair|align=float-left} | {image:img=nearToBlack.jpg|alt=near to black cell|align=float-left} Not allowed: duplicate white number in one row | If one number is white, paint black all other numbers in the same row/column {image:img=duplicate.jpg|alt=duplicate number|align=float-left} | {image:img=sameNumber.jpg|alt=same number|align=float-left} The number between two duplicates (sandwich position) cannot be white, because then both duplicates would need to be white!| A number in sandwich position needs to be white {image:img=sandwichBlack.jpg|alt=sandwich Black|align=float-left} | {image:img=sandwichWhite.jpg|alt=sandwich White|align=float-left} Not allowed: area of white cells is separated from the others with ~~a wall~~ of black cells | A number in a corner which is surounded by duplicates needs to be black {image:img=corner.jpg|alt=Corner 1|align=float-left} | {image:img=corner2.jpg|alt=Corner 2|align=float-left} If a corner contains a pair of duplicate numbers the other number in the corner cannot be black, because in this case the corner cell will be separated from the other cells | In case of duplicates in a corner the third cell needs to be white. {image:img=corner3.jpg|alt=Corner 3|align=float-left} | {image:img=corner4.jpg|alt=Corner 4|align=float-left} In this case the white "1" needs to be connected to the rest of the grid | The "3" is the only possible expansion position and needs to be white (Single Expansion in corner) {image:img=expand1.jpg|alt=Expand 1|align=float-left} | {image:img=expand2.jpg|alt=Expand 2|align=float-left} In this case the white "1" needs to be connected to the rest of the grid | The "3" is the only possible expansion position and needs to be white {image:img=expand3.jpg|alt=Expand 3|align=float-left} | {image:img=expand4.jpg|alt=Expand 4|align=float-left} In this case the 2 cells are already black | The cell on the orange postion needs to be white, because otherwise the left upper corner will be separated {image:img=expand5.jpg|alt=Expand 5|align=float-left} | {image:img=expand6.jpg|alt=Expand 6|align=float-left} {table} 2007-04-11 21:01:49.427 2006-06-28 18:49:43.097 Wed Jun 28 19:09:29 CEST 2006 Wed Jun 28 20:14:35 CEST 2006 Wed Jun 28 20:14:54 CEST 2006 Wed Jun 28 20:27:30 CEST 2006 Wed Jun 28 20:15:59 CEST 2006 Wed Jun 28 19:19:24 CEST 2006 Wed Jun 28 19:41:17 CEST 2006 Wed Jun 28 20:16:19 CEST 2006 Wed Jun 28 20:16:42 CEST 2006 Wed Jun 28 20:17:07 CEST 2006 Wed Jun 28 20:17:27 CEST 2006 Wed Jun 28 20:17:48 CEST 2006 Wed Jun 28 20:18:10 CEST 2006 Wed Jun 28 19:10:39 CEST 2006 Wed Jun 28 19:19:41 CEST 2006 Wed Jun 28 19:25:58 CEST 2006 Wed Jun 28 19:26:16 CEST 2006 Wed Jun 28 19:41:38 CEST 2006