Sudoku puzzles: Gaining popularity in the US
Sudoku is a logic-based puzzle where one enters a numerical digit from 1 through 9 in each cell of a 9X9 grid. Although the first sudoku puzzle was published in the U.S., it did not attain international popularity until 2005 (Wow!). Solving sudoku puzzles involves a combination of three processes: scanning, marking up and analyzing. The following is a brief guide to solving soduku puzzles.
Scanning: Scanning basically takes place not only at the outset but also throughout the solution and consists of two basic techniques. (a) cross-hatching involves scanning rows or columns to identify which line in a particular region may contain a certain numeral by a process of elimination. (b) counting 1-9 in regions, rows and columns to identify missing numerals. Counting based upon the last numeral discovered may speed up the search.
Marking Up: Once no further numbers can be found, sudoku players often find it helpful to mark potential numerals in blank cells. This can be done by actually writing in numerals or dots to represent potential numbers.
Analysis: Two main approaches to analysis include candidate elimination and what if. Candidate elimination; includes successively eliminating candidate numerals from one or more cells to leave just one choice. After each answer has been achieved, another scan may be done, usually checking to see the effect of the contingencies. What if ; using the what if approach, a cell with only two candidate numerals is selected and a guess is made. The steps above are repeated unless a duplication is found or a cell is left with no possible candidate, in which case the alternative candidate is the solution.
Ideally, one needs to find a combination of techniques which avoids some of the drawbacks of the elements above. Sudoku is a fun and engaging game that can sharpen the mind and keep one entertained for a long time.
-Cook Co. may lose its 7% cap on taxes
SPRINGFIELD The temporary fix to skyrocketing property tax assessments may be on its way out. Lawmakers in Springfield have not approved an extension of Cook County’s 7 percent cap amid increasing questions about its effectiveness.
Source: www.suburbanchicagonews.com
Downtown vacancy may soon be filled
You could say the long-empty, decrepit office building, sitting near Water St. and Wisconsin Ave., one of downtown Milwaukee’s most visible corners, sticks out like a sore thumb. But that would suggest this property attracts attention.
Source: www.jsonline.com