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Vanhagen Extreme November 25

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sat Nov 26, 2011 5:55 pm    Post subject: Vanhagen Extreme November 25 Reply with quote
(Reposted from another thread - Keith.)

A little late, but here it is....

Code:

+-------+-------+-------+
| 4 . . | 7 3 . | 1 . 8 |
| . . 5 | 2 . 4 | . . . |
| 2 . . | . 6 . | . 3 . |
+-------+-------+-------+
| . 4 . | . . . | . 5 6 |
| 9 . 8 | . . . | 3 . 7 |
| 3 5 . | . . . | . 8 . |
+-------+-------+-------+
| . 8 . | . 7 . | . . 3 |
| . . . | 6 . 8 | 5 . . |
| 6 . 4 | . 5 3 | . . 2 |
+-------+-------+-------+

Play online

After basics:
Code:
*--------------------------------------------------*
 | 4    69   69   | 7    3    5    | 1    2    8    |
 | 8    3    5    | 2    1    4    | 7    6    9    |
 | 2    7    1    | 8    6    9    | 4    3    5    |
 |----------------+----------------+----------------|
 | 1    4    27   | 3    8    27   | 9    5    6    |
 | 9    26   8    | 5    24   126  | 3    14   7    |
 | 3    5    67   | 19   49   67   | 2    8    14   |
 |----------------+----------------+----------------|
 | 5    8    29   | 4    7    12   | 6    19   3    |
 | 7    129  3    | 6    29   8    | 5    149  14   |
 | 6    19   4    | 19   5    3    | 8    7    2    |
 *--------------------------------------------------*


I used three steps.

xy-wing(67-1)r63c3+r5c2=(2)r5c2-(2=4=1)r5c58-r6c9=r8c9-(1=7)r8c1-r4c1=r46c3-(7=1)r3c3; r3c2<>1

skyscraper (4)r58c8; r6c4,r8c5<>4

BUG+3; r5c5<>2
(2)r5c6;
||
(9)r8c2-(9=6=2)r15c2;
||
(1)r8c8-r8c2=r9c2-r9c4=(1-9)r6c4=(9-4)r6c5=r5c5;

Ted
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sat Nov 26, 2011 8:55 pm    Post subject: Reply with quote
Code:
 correct grid after basics
 +--------------------------------------------------------------+
 |  4     69    69    |  7     3     5     |  1     2     8     |
 |  8     3     5     |  2     1     4     |  7     6     9     |
 |  2    p17    17    |  8     6     9     |  4     3     5     |
 |--------------------+--------------------+--------------------|
 |  17    4     127   |  3     8     127   |  9     5     6     |
 |  9    v16+2  8     |  5     24    126   |  3     14    7     |
 |  3     5    p67    |  149   49    67    |  2     8     14    |
 |--------------------+--------------------+--------------------|
 |  5     8     129   |  149   7     12    |  6     149   3     |
 |  17    1279  3     |  6     249   8     |  5     1479  14    |
 |  6     179   4     |  19    5     3     |  8     179   2     |
 +--------------------------------------------------------------+
 # 43 eliminations remain

Ted wrote:
xy-wing(67-1)r63c3+r5c2=(2)r5c2-(2=4=1)r5c58-r6c9=r8c9-(1=7)r8c1-r4c1=r46c3-(7=1)r3c3; r3c2<>1

I would have written:

(7)r3c3-[<16+7> XY-Wing r5c2/r3c2+r6c3]=(2)r5c2-(2=4=1)r5c58-r6c9=r8c9-(1=7)r8c1-r4c1=r46c3-(7)r3c3

I might have chosen a Kraken Cell interpretation:

Code:
(1)r5c2-(1=7)r3c2-(7)r3c3
    ||
(6)r5c2-(6=7)r6c3-(7)r3c3
    ||
(2)r5c2-(2=4)r5c5-(4=1)r5c8-r6c9=r8c9-(1=7)r8c1-r4c1=r46c3-(7)r3c3


Note: several editing changes to get here.
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