SCE #1: A Clueless Explosion Nightmare

This is not the right forum to discuss the Big Bang Theory,<br>but if you have any comments on last Saturday's <a href="http://www.sudocue.net/explosion.php">Clueless Explosion</a>, you can post them here.
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Børge
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SCE #1: A Clueless Explosion Nightmare

Post by Børge »

Here is a Clueless Explosion Nightmare. This one will hopefully have your brain cells screaming and begging for mercy. :twisted:

Code: Select all

...............3..2.....1.6.....5........49..7..3.8..4..45.36.2..3......5.6.714..
.................9.....7.36.....5.....6.....3..8.7.964.72.8......4..2....81.63.4.
.................5....1.4.7.8...5..1..3........47.625..3...2..8..2..85...68.531..
..............5..9....1..57..4.........7...........8.3..7.8..9...3..2....82..1.4.
...............5........21......2...........6..1.76.8..3...5.....4...9...97..8..3
............7..........62.7....3............8..8..41...51..3......2.......4..8.2.
.......................932...2..8...........5..64...7............5.....6.98.71...
.................9....491.5..3.........8...........871.5...1..3..47......6....2..
.................7......215.2...5.....4.....8....8........61.8.......9...58..2..4
Image

HERE is the paper copy.

You get a hint:
I’ll freely admit that after applying all non-advanced techniques (look out for hidden pairs and triplets), I consulted SudoCue. You probably want to concentrate on grid 1. Here SudoCue first suggests "One 3D Medusa Colouring" followed by a "Two almost locked sets" and several "Conflicting forcing chains". After 12 advanced steps you should end up with a “Hidden single for 2”. Thereafter I was able to solve the rest on my own, but it was surly no walk in the park. Look out for several nasty hidden Pairs, hidden Triplets and an X-Wing.

I will do my best to make the next one easier, somewhere between SCE #1 and #2. I have familiarised myself more with SudokuSolver and will turn off some of the most advanced techniques in the solver, like Bowmans Bingo. When SudokuSolver then is able to solve the Clueless Explosion it should hopefully be something more like a Ruud "Very Hard" or a bit more difficult.

Happy solving :scratch:
Børge
Last edited by Børge on Fri May 16, 2008 3:01 pm, edited 5 times in total.
Sarah
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Post by Sarah »

:D Definite help for withdrawal cravings.
Bravo, Bravo.

My approach may have been a bit different. My first big placement was solving the center 8 in N7. That did clear a bit of N1, but most of the time N3 had more solveds, and was entirely solved while N1 had 15 remaining. I had about 80% solved before any conscious fancy footwork.
FirstOfNine
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SCE #1

Post by FirstOfNine »

Børge, you made my day ;-) ...
thanks, I'll give it a try right now. (btw. if you continue doing that you might consider opening your own webpage with your own "bag" to click on ;-))

cheers
Gabi
atheism is a non-prophet organisation.
Børge
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Post by Børge »

Sarah wrote::D Definite help for withdrawal cravings.
Bravo, Bravo.

My approach may have been a bit different. My first big placement was solving the center 8 in N7. That did clear a bit of N1, but most of the time N3 had more solveds, and was entirely solved while N1 had 15 remaining. I had about 80% solved before any conscious fancy footwork.
Looks like a sure sign that I did some mistakes along the road :oops:
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