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Anti Chess and Forbidden Pairs puzzles http://www.rcbroughton.co.uk/sudoku/forum/viewtopic.php?f=13&t=766 |
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Author: | tarek [ Thu May 20, 2010 7:06 am ] |
Post subject: | Anti Chess and Forbidden Pairs puzzles |
This Puzzle variant which can be described as an anti-king (a cell can't be the same as any of its direct 8 neighbours) with a top-down Rt-Left wrap ... is an easy one The wrapping will make each cell have 8 cell neighbours including the edge & corner cells. example of such a grid with cell r1c1 & its 8 neighbours: Here is the puzzle which I'm providing the solution later Code: 8..1.2..................5...1.7.........5....3....4...2.8..................9.8...
8 . . | 1 . 2 | . . . . . . | . . . | . . . . . . | . . . | 5 . . ------+-------+------ . 1 . | 7 . . | . . . . . . | . 5 . | . . . 3 . . | . . 4 | . . . ------+-------+------ 2 . 8 | . . . | . . . . . . | . . . | . . . . . . | 9 . 8 | . . . |
Author: | HATMAN [ Mon May 24, 2010 8:04 am ] |
Post subject: | Re: Touchless Wrapper |
Another nice paper solvable - Although I did have problems with the wrap by my third pint of Guiness. |
Author: | tarek [ Mon May 24, 2010 6:41 pm ] |
Post subject: | Re: Touchless Wrapper |
HATMAN wrote: I did have problems with the wrap by my third pint of Guiness. tarek |
Author: | tarek [ Fri Jan 18, 2019 8:32 am ] |
Post subject: | 2 Forbidden Pairs puzzles |
Code: Sudoku No8kN8 (No 8 Knight) Easy Cells that are a Knight move apart Shouldn't give you 8 through simple arithmetic operations ......................1.....12..7................3..9.7.....241...8.............. +-------+-------+-------+ | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . 1 . | . . . | +-------+-------+-------+ | . 1 2 | . . 7 | . . . | | . . . | . . . | . . . | | . . . | . 3 . | . 9 . | +-------+-------+-------+ | 7 . . | . . . | 2 4 1 | | . . . | 8 . . | . . . | | . . . | . . . | . . . | +-------+-------+-------+ Hidden Text: Hidden Text: Code: Latin square No Tennis: Easy Latin square Puzzle, adjacent cells combination can't be an Australian Tennis Open final set result score .234.........8.....8.....1............9..13............6.....2.....3......42.7.9. . 2 3 4 . . . . . . . . . 8 . . . . . 8 . . . . . 1 . . . . . . . . . . . . 9 . . 1 3 . . . . . . . . . . . . 6 . . . . . 2 . . . . . 3 . . . . . . 4 2 . 7 . 9 . Hidden Text: Hidden Text: |
Author: | tarek [ Mon Jan 21, 2019 8:27 pm ] |
Post subject: | Sudoku No Squares |
Sudoku No Squares (Easy) Sudoku puzzle where adjacent cell combinations can't form a 2-digit square number Code: Sudoku No Squares (Easy) Sudoku puzzle: Adjacent cells combinations can't form a 2-digit square number ...4..8......8....8................8.9.....7.4................1....6......3..5... +-------+-------+-------+ | . . . | 4 . . | 8 . . | | . . . | . 8 . | . . . | | 8 . . | . . . | . . . | +-------+-------+-------+ | . . . | . . . | . . 8 | | . 9 . | . . . | . 7 . | | 4 . . | . . . | . . . | +-------+-------+-------+ | . . . | . . . | . . 1 | | . . . | . 6 . | . . . | | . . 3 | . . 5 | . . . | +-------+-------+-------+ Hidden Text: |
Author: | azpaull [ Wed Jan 23, 2019 12:03 am ] |
Post subject: | Re: Touchless Wrapper |
HATMAN wrote: Another nice paper solvable - Although I did have problems with the wrap by my third pint of Guiness. Wait! Does that mean you finished it in 3 pints, or did you have to resume the following a.m.? I think we may have stumbled on a new rating system! ('Course, it may be a "6D" system with all of the added factors.) I just printed it out, and am going to have to teetotal to have any chance at it! |
Author: | tarek [ Thu Jan 24, 2019 2:24 pm ] |
Post subject: | Re: Touchless Wrapper |
azpaull wrote: HATMAN wrote: I just printed it out, and am going to have to teetotal to have any chance at it! |
Author: | tarek [ Thu Jan 24, 2019 2:25 pm ] |
Post subject: | Re: No8kN8 & No tennis solutions |
Hidden Text: |
Author: | tarek [ Sun Jan 27, 2019 3:28 pm ] |
Post subject: | sudoku No Squares solution |
Sudoku No Squares Solution Hidden Text: |
Author: | Andrew [ Fri Aug 09, 2019 4:22 am ] |
Post subject: | Re: Anti Chess and Forbidden Pairs puzzles |
I only came across these nice puzzles a few months ago. A typical variety for this forum which has so many different types of sudokus. I initially got stuck on the Anti-King Wraparound puzzle and my late evening glass of single malt (whisky) didn't help much. Then I came back to it today, early evening, and managed to spot the anti-Kings that I'd been missing before (I do them manually on my Excel worksheet), the hardest one to spot being the naked pair {67} in R2C9 and R3C1, which eliminated 6,7 from R2C23. tarek doesn't seem to have posted the solution to this puzzle. Solution: The No Squares and No Tennis puzzles were both easy. Having originally got stuck on the No 8 Knight puzzle; I've now had another look at it and realised I'd missed a knight move, then I needed a short forcing chain to force one placement which allowed me to finish it, so it felt a bit harder than Easy. |
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