Solution to Ocean's "The Anemone"

Advanced methods and approaches for solving Sudoku puzzles

Solution to Ocean's "The Anemone"

Postby gurth » Tue Nov 07, 2006 11:44 am

.
Solution to Ocean's "The Anemone".

Code: Select all
 *-----------*
 |..1|..2|...|
 |.3.|.4.|.5.|
 |5..|6..|3..|
 |---+---+---|
 |..7|...|..6|
 |.8.|...|.4.|
 |2..|...|1..|
 |---+---+---|
 |..6|..9|..7|
 |.4.|.7.|.8.|
 |...|5..|9..|
 *-----------*


NOTE: Sub-nets are enclosed thus: (?xay...??) and sub-sub-nets thus: ((?xay...??)).

(1) ... -4d6(MC), -6f6(MC). ("..." denotes steps using Simple Sudoku program)

(2) ?4d4... (?6e6...??) -6e6... (?6f5... -2k9(MC), -7a7f8(XY-Wing 279a8d8e7)...??) -6f5...?? -4d4...

(3) ?4f4... (?6f5... -2k9(MC), ((?5e6...??)) -5e6, ((?5e7...??)) -5e7, ((?5d7...??)) -5d7...??) -6f5... (?6h7...??) -6h7... -7b16e6(X-Wing 7be47)... (?7a8...??) -7a8... -9d4(MC)...?? -4f4... -7b4(MC)...

(4) ?6e6...?? -6e6...

(5) ?6a2...?? -6a2.

(6) ?6a1...?? -6a1... -5e39(X-Wing 5fh39)... -8b4(MC)...

(7) ?-9c2f5(GMET)...?? (9c2 OR 9f5), -9c5, 1c5...

(8) ?-9a2h1(GMET)...?? (9a2 OR 9h1), -9a1...

(9) ?7a1?? -7a1, 8a1... -2d8(MC).

(10) ?8c6...?? -8c6, 7c6...

(11) ?2d5...?? -2d5, 3d5... End.

Note: number of nets tried and discarded: nil.

______________________________________________________
gurth
 
Posts: 358
Joined: 11 February 2006
Location: Cape Town, South Africa

Re: Solution to Ocean's "The Anemone"

Postby Ocean » Tue Nov 07, 2006 7:37 pm

gurth wrote:.
Solution to Ocean's "The Anemone".

Thanks! It's the first solution I have seen to a puzzle that Explainer can not solve. Will study your solution in more detail when I get some spare time.
Ocean
 
Posts: 442
Joined: 29 August 2005


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