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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": $ G9 \3 C' \+ E# V! a2 }" h! R
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Region
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- Sudoku begins with some of the grid cells already filled with numbers: 1 G+ i2 n' x% b, n" F6 J3 M4 L
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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:
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( S; E2 h6 \4 `( I6 {8 P1. Number can appear only once on each row: - I. {0 u& l, U) S+ T" \8 w
, D0 O9 i* N. h$ Y$ vAllowed # p- k- d. {. b3 D
/ E) [0 N+ N$ h% W
Not allowed
# N( o1 r* R& Y
# B6 h3 E* c1 `9 C$ l; A2. Number can appear only once on each column:
7 t1 p5 N: u4 c- V
; F8 G! Q2 M6 L6 C8 k0 eAllowed Not allowed 4 T/ S+ M- P' a& w& D$ }1 A
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3. Number can appear only once on each region: 4 H4 Q0 v- H+ x2 y/ F, N. G
5 e# J) l$ P( rAllowed 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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