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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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- Sudoku begins with some of the grid cells already filled with numbers: ) B5 n) x N3 u! _0 l' ?
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8 \3 @" L# [* n- 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: ) I7 ^, H( H6 @5 [1 A; s; J: j
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1. Number can appear only once on each row: ' `6 V9 R+ k+ d
$ G% }* D0 _! E! x% sAllowed 5 }3 p# s j4 c$ U* ^8 Z' f
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Not allowed
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2. Number can appear only once on each column: 8 I- u7 w, U6 V$ j% t% Q
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Allowed Not allowed 8 V9 ~1 N" t# f
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; K- Z1 s0 [; W3. Number can appear only once on each region:
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0 q7 Y/ ?( a/ ^ G% X) j) F( `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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