Help on solving daily sudoku puzzles
List of contributions in 'Moderate blank regions'
| Moderate blank regions contributed by Prudence |
This recent moderate daily puzzle has got me stumped. It has three completely blank regions, including the key central one.How do I set about solving it? Click here to download this puzzle
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| Daily Solution (re: Moderate blank regions) contributed by Lynne |
| I just think you need to start with the partially complete regions and once these are solved home in on the blank regions. So, I first look at mainly complete groups. Column a is key. If you look you'll find 1 must go in Ia amd 4 can only go in Ha. In region Aa the square Ca can only take one value 5. Assigning 5 here means that 6 must go in Ga. So that's got off to a good start a blank region noe has three squares filled in. Now look at row C as that has five squares filled in. The missing numbers are 2,7,8 and 9. Now 2 can only go in Cg because the fortunate allocation of 2s in Gf Fh and Hi. Also you can see that the square Ci has only one possible value 7. This leaves 8;9 to assign on this row but 9 cant go in Cf so 8 must go there and 9 in Ch. Once again three squares in a previously blank region have fone and it looks a lot better to solve now. One obvious square now is Gi which must be 5. Attached is the puzzle with these squares solved. Does that get you started ?  Download this puzzle Click here to download this puzzle
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| Daily Stripe (re: Daily Solution) contributed by John Wood |
| The next easy step I found on this one was to look for the Sudoku stripe. Looking through all the rows and columns the only place it could be is in row I at the bottom. Once you've found that you can complete the block Gg bottom right and you are away - look at column b and row H next.  Download this puzzle Click here to download this puzzle
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| Submit1732 (re: Moderate blank regions) contributed by Prudence |
This daily puzzle has me stuck Download this puzzle Click here to download this puzzle
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| Hunt the stripe (re: Submit1732) contributed by Alexander |
| I must admit to have been a little stuck to begin with. There doesn't even seem to be an X-Wing to help out! I then realised that I hadn't looked for the Sudoku stripe that is present in all the daily puzzles. It takes a little spotting but there it is in reverse order in row D. This takes in part of the central region so the rest of the puzzle should be easy to solve.
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| Submit1908 (re: Moderate blank regions) contributed by Georgina |
Daily puzzle Download this puzzle Click here to download this puzzle
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| Daily Challenge solved (re: Submit1908) contributed by Alexander |
| The easy answer once again is to look for the Sudoku Stripe! Once you locate this you can solve the puzzle without much difficulty. There is only one place that the stripe could be located in this sudoku puzzle. It is in column f in reverse order. From what I can see once you fill in the numbers 1 to 4 and 6 to 7 in the stripe all the remaining squares are fairly easy to solve.
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| Submit2071 (re: Moderate blank regions) contributed by Lynne |
Another stuck one Download this puzzle Click here to download this puzzle
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| Complex groups (re: Submit2071) contributed by Prudence |
| The next square is fairly tricky to spot. Fortunately release 15 will analyse the possibilities and show the way - have you got an up-to-date version??? The key square is Fh that would seem to be able to take a 1;2;4 and 9. However, column h has a naked twin (1;4) that means the 1 and 4 in Fh can both be safely excluded as possibilities. That leaves 2 and 9. Within the region Dg there is a naked chain of possibilities {1 4} Dh; {1 9} Fg and {4 9} Fi. This means 1;4;9; must be allocated in these three squares and nowhere else. So Fh can not be 9 and 2 is now the only choice remaining. Assign 2 here and I believe the rest will be plain sailing.
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