- 在线时间
- 0 小时
- 最后登录
- 2011-1-1
- 注册时间
- 2009-1-23
- 听众数
- 3
- 收听数
- 0
- 能力
- 0 分
- 体力
- 424 点
- 威望
- 0 点
- 阅读权限
- 30
- 积分
- 189
- 相册
- 1
- 日志
- 4
- 记录
- 6
- 帖子
- 107
- 主题
- 0
- 精华
- 0
- 分享
- 2
- 好友
- 31
升级   44.5% 该用户从未签到
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":
& a" I. Q1 u$ \+ Q# n. x6 I
7 r( R8 M- \+ f3 w0 g9 ?) u
- o# h. o" ] h5 A( K& n. QRegion
! ?- ]% ?, ]) M 5 L. d+ y, W+ K$ J& E% z" G! @8 q
z, l+ z! R& v- K- Sudoku begins with some of the grid cells already filled with numbers:
. j( W c" Y- D# p9 k% L" y; {% R
3 J8 l: t+ g+ j6 _# X# {4 H3 \ - {& C7 @% r: E- \
' `& H' f" s9 m( `) E+ z- 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:
6 e- v- q2 t$ d6 I, S
+ O! m/ Q0 A8 G6 Q4 |+ E. Y1. Number can appear only once on each row: / D8 Z! n6 z# Y3 @) Q2 g4 P
+ L M7 X. V' d
Allowed " v! i+ p7 Y% A
, @5 J- l3 S+ a5 ?/ f5 rNot allowed ; Y$ F) V. V4 {# q6 C
3 w9 k( S' z- Y/ M: T" Z2. Number can appear only once on each column:
9 k7 N. f' w0 ?- o
- r$ \$ b; `: g5 N- s+ D* M7 kAllowed Not allowed ' \6 n Y! W: H) k+ C8 U3 g) Q
6 x# p5 {, G# P+ S
# b9 W) c* g# E; n1 ^+ U3. Number can appear only once on each region:
$ Q/ G7 v0 v! r7 R8 X) z9 U2 K% N% [
Allowed Not allowed
1 @4 @3 v' u- _5 t9 L! Y
* }: k/ ~/ s$ A$ X- W [5 N3 O
; h/ C w% g# G' S# @- A summary of these guidelines would be, that a number should appear only once on each row, column and a region. |
|