WSPC 2017 • Schedule • Participation • Location • WSC • WPC • Contact •Search •Recent
 Diagonal Vision — LMI March Sudoku Test — 10th-12th March | |
| LMI Tests -> Monthly Sudoku and Puzzle Tests | 60 posts • Page 3 of 3 • 1 2 3 |
Fred76 |
| ||
 Diagonal Vision Author Posts: 337   Location: Switzerland | Finally (then I stop and let you concentrate on the tapa contest  ), I want to speak about the diagonal twin sudoku. There is (at least) 2 openings for these grids. You can begin with the corners. With grid A you can place 8 in R1C9, 4 in R9C9, and Grid B let you know the two other corners. But there is another opening, which I find more elegant: You can start with the center of the grids: box 5. Grid A let you know that digits in white cells are 3,5,7 and 8. Knowing that individually they can't be placed in the same cell let you place the 5 in R5C6, the 3 in R5C4, then the 8 in R6C5 and 7 in R4C5 in grid B. Then in both grids, 6 can be placed in R5C5, you have a pair 14 in cells R6C46, then 2 in R4C4 and 9 in R4C6. Of course, you'll need still lot of work to solve these grids, but box 5 is almost filled (diagotwin2.png) Attachments ----------------  diagotwin2.png (18KB - 0 downloads) | ||
| 60 posts • Page 3 of 3 • 1 2 3 |
| Search this forum Printer friendly version |
