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群组: 数学建模 群组: 数学趣味、游戏、IQ等 群组: 趣味数学 群组: 加油数模,加油美国赛。 群组: 南京邮电大学数模协会 |
Sudoku is played over a 9x9 grid, divided to 3x3 sub grids called "regions":
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Region
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$ V: Y: ?$ U, o% t% C+ I4 U% k- Sudoku begins with some of the grid cells already filled with numbers:
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- The object of Sudoku is to fill the other empty cells with numbers between 1 and 9 (1 number only in each cell) according the following guidelines: + ]+ K9 S/ c, v! V" W
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1. Number can appear only once on each row: - a" ~5 ]- J( B; `
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Allowed ' y5 F. d4 _9 l+ \+ a
; Y7 \1 R j" ^4 g; ONot allowed 9 t5 B/ i; h4 L
7 V: g1 w% V1 Z6 p) I6 f$ n8 o9 c2. Number can appear only once on each column:
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# m8 }8 |0 G( x8 g, uAllowed Not allowed
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3. Number can appear only once on each region:
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Allowed Not allowed
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- A summary of these guidelines would be, that a number should appear only once on each row, column and a region. |
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