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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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 Posted: Tue May 25, 2010 4:55 pm Post subject: Astraware Diabolical May 24 |
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| Code: | +-------+-------+-------+
| 3 . . | . 1 2 | . 8 . |
| 8 . . | . . . | . 1 . |
| . 1 . | . . 5 | 2 . . |
+-------+-------+-------+
| . . 9 | 3 . . | . . 6 |
| . 2 3 | . . . | 8 5 . |
| 4 . . | . . 8 | 9 . . |
+-------+-------+-------+
| . . 4 | 1 . . | . 7 . |
| . 6 . | . . . | . . 2 |
| . 9 . | 2 7 . | . . 4 |
+-------+-------+-------+
Difficulty 24400
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Score this high is usually quite hard - but not done yet.. |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Tue May 25, 2010 5:27 pm Post subject: |
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Il Bastardo!
| Quote: | | (3)r8c7=r2c7-(3=7)r3c9-(7=6)r3c3-r3c8=(6-3)r8c8=(3)r8c7 so r8c7 = 3 |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Tue May 25, 2010 5:41 pm Post subject: |
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Mogul that was quick!
There seemed to be lots of dead-end paths like URs and swordfish - I found one elimination (continuing my 'almost' studies of late) that opened it up also...
| Quote: | (467)ANT (467=3)r124c7-(3=7)r3c9-(7=6)r3c3; r3c8<>6
alternative for same elimination...
AIC (6=7)r3c3-(7=3)r3c9-r6c9=r6c8-(3=6)r9c8; r3c8<>6 |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Tue May 25, 2010 7:42 pm Post subject: |
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I was looking at the board when you posted the puzzle and jumped right on it in true Dan fashion ! Another discontinuous loop - contradictions abound.
I must say I do like the Astraware puzzles you have stuck up. I'm afraid I'm not really cognisant of the rating system. |
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peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
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| Posted: Tue May 25, 2010 10:04 pm Post subject: |
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| To be honest they are pretty patchy! Their solver only does x-wings and then generic forcing chains - so sometimes even the hard ones fall to a simple turbot fish pattern. I usually paste them into SS and keep pressing F11 - if it hits the "No hint available" I take a look at them otherwise dont bother. No idea how the difficulty score works - other than bigger is better - the ones over 20000 tend to be SudokuExplainer 7.2 or harder. |
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