PUZZLE NO. 315 : TRIO SUDOKU

 

RULES : Classic Sudoku rules apply. Additionally, cells containing grey circles will only contain digits 1, 2 & 3. Cells containing grey squares will only contain digits 4, 5 & 6. Cells containing grey diamonds will only contain digits 7, 8 & 9.

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PUZZLE NO. 314 : IRREGULAR SUDOKU

RULES : Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and outlined region. Each outlined region is marked by thick borders.

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PUZZLE NO. 313 : GROUP SUM SUDOKU

 

RULES : Classic Sudoku rules apply. Additionally, the numbers inside each circle indicate the sum of the digits in the cells covered by the corresponding circle. Digits may repeat in the cells covered by a circle, provided, they satisfy the normal sudoku rules.

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PUZZLE NO. 312 : X-SUMS SUDOKU

 

RULES : Classic Sudoku rules apply. Additionally, the clues outside the grid indicate the sum of the first X digits placed in the corresponding direction, where X is equal to the first digit placed in that direction.

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PUZZLE NO. 311 : KILLER-LITTLE KILLER HYBRID SUDOKU

 

RULES : Classic Sudoku rules apply. Additionally,

• Killer Sudoku rules apply, i.e., there are some cages in the grid. The number on the top left corner of each cage is equal to the sum of the digits in that cage. Digits do not repeat inside a cage.
• Little Killer Sudoku rules apply, i.e. the numbers with arrows outside the grid indicate the sum of the digits appearing in the cells in the corresponding direction. Digits may repeat in the direction of the arrow.

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PUZZLE NO. 310 : ODD-CONSECUTIVE PAIRS HYBRID SUDOKU

 

RULES : Classic Sudoku rules apply. Cells with grey circles will contain only odd digits. Cells separated by white dots will contain consecutive digits. Not all possible dots are marked.

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PUZZLE NO. 309 : KILLER-LITTLE KILLER-RENBAN HYBRID SUDOKU

 

RULES : Classic Sudoku rules apply. Additionally,

• Killer Sudoku rules apply, i.e., there are some cages in the grid. The number on the top left corner of each cage is equal to the sum of the digits in that cage. Digits do not repeat inside a cage. 
• Little Killer Sudoku rules apply, i.e.,  the numbers with arrows outside the grid indicate the sum of the digits appearing in the cells in the corresponding direction. Numbers may repeat in the direction of the arrow.
• Renban Sudoku rules apply, i.e., each grey line contains consecutive numbers, in any order.

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