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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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! m2 u) t0 K6 K: h$ o: W2 MRegion
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- Sudoku begins with some of the grid cells already filled with numbers:
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8 t6 H* C; B# ^* K# P- M0 q- 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:
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1. Number can appear only once on each row: : M# h$ @, q) \
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Allowed
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, R+ S3 R( x* T3 RNot allowed
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+ f6 X8 C& z6 M9 S0 G: s! m2. Number can appear only once on each column:
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. l* W6 q: d2 E; B+ V8 tAllowed Not allowed ! g, [- e5 B8 ?- E% }3 a
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! g& o: [5 b, I: U! N3. Number can appear only once on each region:
1 a9 M% m9 X4 H( H
* e; I8 D( D T1 o+ ZAllowed 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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