Author |
Message |
Topic: it's the 1 april - time of a real challange - Zen Sudoku |
someone_somewhere
Replies: 3
Views: 31452
|
Forum: Other puzzles Posted: Sat Apr 01, 2006 4:20 pm Subject: it's the 1 april - time of a real challange - Zen Sudoku |
Hi, I know, nobody has yet solved the previous Zen sudoku. Now on the 1. April it's time for an other one. We just take the old (unsolved) one: 6.2.5.... .....4.3. ......... 43...8... .1....2.. ...... ... |
Topic: DB Saturday Puzzle (April 1) |
someone_somewhere
Replies: 2
Views: 29045
|
Forum: Other puzzles Posted: Sat Apr 01, 2006 4:05 pm Subject: DB Saturday Puzzle (April 1) |
Hi, may I suggest from Aplha star r1c7 to eliminate 3 from r9c9: 2 6 135 9 57 157 37 4 8 . . .a. . .. ... Aa . . . . ... . ... |
Topic: DB Saturday puzzle (March 25) |
someone_somewhere
Replies: 7
Views: 58037
|
Forum: Other puzzles Posted: Tue Mar 28, 2006 4:58 pm Subject: DB Saturday puzzle (March 25) |
Hi David,
That is exact what I had in mind, and that you have suggested in one of the last emails.
Instead of starting from an ALPHA star with 2 digits, we could also start from a "double" star. So ... |
Topic: DB Saturday puzzle (March 25) |
someone_somewhere
Replies: 7
Views: 58037
|
Forum: Other puzzles Posted: Mon Mar 27, 2006 8:35 am Subject: DB Saturday puzzle (March 25) |
Hi, Some comments about using the DIC (Double Implication Chains): - it depends on your starting Alpha star. - it depends about how many stars you are willing to follow (how deep you are ready to go). ... |
Topic: NIghtmare 24 Mar - basic training DIC - Double Impl. Chains |
someone_somewhere
Replies: 0
Views: 22342
|
Forum: Other puzzles Posted: Sat Mar 25, 2006 11:30 am Subject: NIghtmare 24 Mar - basic training DIC - Double Impl. Chains |
Hi, The Nightmare from 24 Mar can be used for a basic training in DIC - Double Impliation Chains.
Starting from: ........8 .1..843.. 28..7.... .541..... .7.....2. .....541. ....9..31 ..681..7. 5..... ... |
Topic: Nightmare 25 Mar - Nice special 6 stars constellation |
someone_somewhere
Replies: 1
Views: 25701
|
Forum: Other puzzles Posted: Sat Mar 25, 2006 11:06 am Subject: Nightmare 25 Mar - Nice special 6 stars constellation |
Hi, The Nightmare from 25 Mar:
5.....3.. .7...5.9. 3....6..2 ..4.32... ..5...1.. ...75.4.. 9..8....1 .8.5...7. ..1.....4
After warm up with: Hidden Pair 1 4 in r2c1 and r2c5, Nacked Pair 6 8 in r2c7 ... |
Topic: A very tough minimal sudoku |
someone_somewhere
Replies: 5
Views: 46684
|
Forum: Other puzzles Posted: Mon Mar 13, 2006 8:59 am Subject: A very tough minimal sudoku |
Thank you, guys. I used also double implication chains, but ... I had to travel to a couple of other galaxies, until I got to the solution. It is ZEN. Hope that you are finding a way, your way ...
W ... |
Topic: DB Saturday puzzle (March 11) |
someone_somewhere
Replies: 7
Views: 49754
|
Forum: Other puzzles Posted: Sun Mar 12, 2006 3:58 pm Subject: DB Saturday puzzle (March 11) |
Hi, could not resist to take a look at this one. I found a nice 5 star in the following places: r2c6 = 47 r2c7 = 47 r3c5 = 347 r9c5 = 47 r9c7 = 47 Staring with r2c6 as alpha and following only the dig ... |
Topic: "Nightmare" for Thursday, 9 March, 2006 |
someone_somewhere
Replies: 2
Views: 31280
|
Forum: Other puzzles Posted: Sun Mar 12, 2006 2:51 pm Subject: "Nightmare" for Thursday, 9 March, 2006 |
Hi, Just tried this one, in order to check that I am still alive ...
I foud for digit 3 a X-Wing on Column in: r2c2 r2c6 r5c2 r5c6 so I could eliminate it from: r3c2, r3c6, r4c2, r4c6, r9c6 and so 3 ... |
Topic: A very tough minimal sudoku |
someone_somewhere
Replies: 5
Views: 46684
|
Forum: Other puzzles Posted: Sun Mar 12, 2006 2:12 pm Subject: A very tough minimal sudoku |
Yes, I called it Zen. No single response in this forum is confirming it's name. I know how to get to the solution, but it takes a long time, like in the Zen training. No brute force is needed.
If som ... |
Topic: A "4-star constellation" example |
someone_somewhere
Replies: 14
Views: 90288
|
Forum: Other puzzles Posted: Sat Mar 04, 2006 4:07 pm Subject: someone_somewhere is still alive |
Sorry for not beeing active in this forum for a longer time ... I am active now in a project in UK where I have similar excitement as solving the "almost imposible" Sudoku's. In the airport, I noticed ... |
Topic: "Nightmare" for January 30, 2006 |
someone_somewhere
Replies: 2
Views: 33976
|
Forum: Other puzzles Posted: Sun Feb 05, 2006 11:28 am Subject: "Nightmare" for January 30, 2006 |
Hi,
Yup the digit 7 is the key for this Sudoku. Looking it from the point of view of the DIC (Double Implication Chains) by starting from a pair, it can also be solved.
Here the key for the solutio ... |
Topic: Would USA Today run an unsolvable/multiple solution puzzle? |
someone_somewhere
Replies: 10
Views: 82606
|
Forum: Other puzzles Posted: Sun Feb 05, 2006 10:54 am Subject: Would USA Today run an unsolvable/multiple solution puzzle? |
Thank you David. You can explain better than me.
P.S. I was in a project "on the field" in a different country, and I had no time except for sleeping and toilet. The rest was like solving Sudoku. Now ... |
Topic: Would USA Today run an unsolvable/multiple solution puzzle? |
someone_somewhere
Replies: 10
Views: 82606
|
Forum: Other puzzles Posted: Sun Jan 29, 2006 8:54 am Subject: Would USA Today run an unsolvable/multiple solution puzzle? |
Hi, This one is special ... . . . . . 1 2 . . . 3 . . 2 4 5 . . . 6 2 . 5 7 . . . 5 . . . 6 . . . 7 2 . . . 4 . . . 8 9 . . . 3 . . . 1 . . . 4 . . 1 9 . . . 8 5 . . . 6 . . ... |
Topic: Two Puzzles |
someone_somewhere
Replies: 2
Views: 33330
|
Forum: Other puzzles Posted: Sun Jan 29, 2006 8:25 am Subject: Two Puzzles |
Hi, The second one is also nice: 2 . . . . . . . . 7 1 6 . . . . . . 5 . . 6 . . 1 7 9 . 7 . 1 . 3 . . . . . 2 5 . 6 4 . . . . . 2 . 8 . 9 . 8 9 5 . . 4 . . 1 . . . . . . 2 4 3 ... |
Topic: Two Puzzles |
someone_somewhere
Replies: 2
Views: 33330
|
Forum: Other puzzles Posted: Sun Jan 29, 2006 8:08 am Subject: Two Puzzles |
Hi,
after setting 22 digits in the: 2 5 . 8 . . . . . . . . . 9 . 8 . 2 9 . . 4 . 7 . . . 6 4 . . . . . 9 . . 9 . 1 . 3 . 4 . . 7 . . . . . 2 1 . . . 5 . 4 . . 7 7 . 6 . 8 . . ... |
Topic: Nightmare |
someone_somewhere
Replies: 9
Views: 62665
|
Forum: Other puzzles Posted: Sun Jan 22, 2006 8:53 am Subject: Nightmare |
Hi,
The distribution of 6's is relly BEAUTIFULL. If we eliminate first the one from r2c9 we are left with exact 2 occurences of digit 6 in every block!
It would be a pitty to distroy it with the XY- ... |
Topic: Where are the solutions? |
someone_somewhere
Replies: 7
Views: 43939
|
Forum: Daily Sudoku puzzles Posted: Sun Jan 22, 2006 8:17 am Subject: Where are the solutions? |
Hi Alan,
If you would be a girl, I could get in love with you. We have the same understanding of Sudoku.
Looking always for a puzzle that puts new problems for solving it! How we solve it - that's t ... |
Topic: Saturday Puzzle Jan 21 |
someone_somewhere
Replies: 5
Views: 44285
|
Forum: Other puzzles Posted: Sun Jan 22, 2006 8:07 am Subject: Saturday Puzzle Jan 21 |
Hi,
After the first 25 digits, I detected a Naked Triple 3 5 7 in 3x3 Block 4. Could so eliminate 5 from r4c5 and 7 from r5c4. So I could pinpoint other 3 digits: 5 in r4c3 - Unique Horizontal 7 ... |
Topic: Nightmare |
someone_somewhere
Replies: 9
Views: 62665
|
Forum: Other puzzles Posted: Sat Jan 21, 2006 12:56 pm Subject: Nightmare |
Hi,
I found a Hidden Triple 5 7 8 in r1c8 r2c7 r2c8 and could eliminate 6 from r1c8, r2c7, r2c8.
Sometimes later, I found Hidden Pair 3 8 in r8c3 and r9c2 (in 3x3 Block) and could eliminate it from ... |
|