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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": 1 O" {, |" V+ y4 b3 }0 M6 ?
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. L3 n/ o8 x, m9 N8 LRegion
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- 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: ( V( ^& Q* X( g2 t2 E1 i p* w( g
8 w: o+ f" `2 Z! ~( N1. Number can appear only once on each row:
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" P7 u+ K6 w+ |4 p' ]4 \+ iAllowed
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Not allowed 4 u4 K+ j: H9 c8 `
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2. Number can appear only once on each column:
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Allowed Not allowed
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- Q2 l3 \0 ?9 \8 ?' s0 y8 _3. Number can appear only once on each region:
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Allowed Not allowed 3 F7 Y# b1 J, n% J
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6 y$ _+ M l3 E; s- 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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