Extreme** 6/9/17

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Extreme** 6/9/17

Postby nedBlake » Fri Jun 09, 2017 1:09 pm

Code: Select all
  *-----------*
  |.36|...|...|
  |4..|5.2|...|
  |.2.|..4|6.5|
  |---+---+---|
  |9.5|.8.|...|
  |..3|2..|..4|
  |...|1..|3.9|
  |---+---+---|
  |.7.|.5.|9..|
  |...|.38|.6.|
  |8..|...|.1.|
  *-----------*


The ** means this must contain a couple of chains or at least a Medusa chain
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Re: Extreme** 6/9/17

Postby JasonLion » Fri Jun 09, 2017 4:50 pm

I only needed to use a naked pair, a unique rectangle, and singles.
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Re: Extreme** 6/9/17

Postby Leren » Fri Jun 09, 2017 9:04 pm

Code: Select all
*-----------------------------------------------------*
| 5    3    6     | 8    17   9     | 24   47   12    |
| 4    9   c17    | 5    6    2     | 78   3   b18    |
| 17   2    8     | 3    17   4     | 6    9    5     |
|-----------------+-----------------+-----------------|
| 9    4    5     | 7    8    3     | 1    2    6     |
| 67   1    3     | 2    9    56    | 78   578  4     |
| 267  8   d27    | 1    4    56    | 3    57   9     |
|-----------------+-----------------+-----------------|
| 3    7    4-2   | 6    5    1     | 9    48  a28    |
| 12   5   *1249  |*49   3    8     | 24   6    7     |
| 8    6   *49    |*49   2    7     | 5    1    3     |
*-----------------------------------------------------*

After the naked pair (78) r25c7 => - 7 r18c7 you get to here.

A length 4 XY chain => - 2 r7c2 and solves the puzzle in singles. I've also indicated Jason's UR in the cells marked * which => - 49 r8c3 and also solves in singles. A number of other 4 Strong link chains also solve.

Leren
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