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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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 Posted: Sat Mar 19, 2016 5:52 pm Post subject: DT Diabolical 031816 |
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And here is the Daily Telegraph's Diabolical from yesterday. | Code: | Puzzle: DT Diabolical 031816 #3496
+-------+-------+-------+
| 9 . . | . . . | . . . |
| 7 4 1 | . . . | 5 . . |
| 5 . . | 7 . . | . 2 . |
+-------+-------+-------+
| . . . | 2 . 6 | . . . |
| . 9 3 | . . . | 6 4 . |
| . . . | 4 . 1 | . . . |
+-------+-------+-------+
| 6 1 . | . . 5 | . . 9 |
| . . 5 | . . . | 7 1 . |
| 4 . . | . . . | . . 3 |
+-------+-------+-------+ |
Keith |
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keith
Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
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| Posted: Sat Mar 19, 2016 6:14 pm Post subject: |
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Spoiler ahead:
My after basics:
| Code: | +-------------+-------------+-------------+
| 9 23 28 | 158 158 4 | 13 6 7 |
| 7 4 1 | 69 26 239 | 5 39 8 |
| 5 36 68 | 7 18 39 | 139 2 4 |
+-------------+-------------+-------------+
| 18 57 4 | 2 39 6 | 389 379 15 |
| 12 9 3 | 58 578 78 | 6 4 12 |
| 28 567 67 | 4 39 1 | 389 379 25 |
+-------------+-------------+-------------+
| 6 1 27 | 3 27 5 | 4 8 9 |
| 3 28 5 | 89 4 29 | 7 1 6 |
| 4 78 9 | 16 16 78 | 2 5 3 |
+-------------+-------------+-------------+
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It's a slog to get even there!
Keith |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Mar 20, 2016 2:01 am Post subject: |
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I used Keith's basics.
DP (58) r15c45
Using a mix of internals and externals
8r3c5=7r5c5=> 7 common outcomes
(Sorry, no notation). |
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dongrave
Joined: 06 Mar 2014
Posts: 572
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| Posted: Sun Mar 20, 2016 2:32 am Post subject: |
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Darn it all Marty! You make it look so easy! This one took me a long long long time and I began with Keith's grid.
9r2c4-r2c8=(9-1)r3c7=r3c5-(1=6)r9c5-(6=2)r2c5-(2=39)r23c6-9r2c4; contradiction => r2c4<>9; stte (I think). |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Mar 20, 2016 3:32 am Post subject: |
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| dongrave wrote: | Darn it all Marty! You make it look so easy! This one took me a long long long time and I began with Keith's grid.
9r2c4-r2c8=(9-1)r3c7=r3c5-(1=6)r9c5-(6=2)r2c5-(2=39)r23c6-9r2c4; contradiction => r2c4<>9; stte (I think). |
Don, I took the liberty of offering up an alternative, changes in red.
(6=9)r2c4-r2c8=(9-1)r3c7=r3c5-(1=6)r9c5-(6=2)r2c5-(2=396)r23c6r2c4 |
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JC Van Hay
Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium
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| Posted: Sun Mar 20, 2016 8:01 am Post subject: |
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A shorter version of the previous chains :
| Code: | +-------------+-----------------+-----------------+
| 9 23 28 | 158 158 4 | 13 6 7 |
| 7 4 1 | (69) 2-6 239 | 5 3(9) 8 |
| 5 36 68 | 7 8(1) 39 | 3(19) 2 4 |
+-------------+-----------------+-----------------+
| 18 57 4 | 2 39 6 | 389 379 15 |
| 12 9 3 | 58 578 78 | 6 4 12 |
| 28 567 67 | 4 39 1 | 389 379 25 |
+-------------+-----------------+-----------------+
| 6 1 27 | 3 27 5 | 4 8 9 |
| 3 28 5 | 89 4 29 | 7 1 6 |
| 4 78 9 | 1-6 (16) 78 | 2 5 3 |
+-------------+-----------------+-----------------+
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(6=9)r2c4-9r2c8=(9-1)r3c7=1r3c5-(1=6)r9c5 -> -6r2c5,r9c4; stte |
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dongrave
Joined: 06 Mar 2014
Posts: 572
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| Posted: Sun Mar 20, 2016 2:05 pm Post subject: |
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| Oh! Cool! I like it! Thanks Marty and JC! |
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