| View previous topic :: View next topic |
| Author |
Message |
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
 Posted: Tue Jun 22, 2010 4:50 pm Post subject: Puzzle 10/06/22: (B) XY |
 |
|
| Code: | +-----------------------+
| . 4 6 | . . 9 | . . . |
| 5 3 . | 4 6 . | 9 . . |
| 9 . . | . . 3 | 6 . . |
|-------+-------+-------|
| . 5 . | . 7 8 | . . 9 |
| . 8 . | 9 5 . | . . . |
| 4 . 9 | 3 . 2 | 7 . . |
|-------+-------+-------|
| . 7 4 | . . 6 | 5 9 . |
| . . . | . . . | 4 7 . |
| . . . | 7 . . | . . 3 |
+-----------------------+
|
Play this puzzle online at the Daily Sudoku site
| Code: | after basics
+-----------------------------------------------------------------------+
| 18 4 6 | 15 2 9 | 138 135 7 |
| 5 3 128 | 4 6 7 | 9 12 128 |
| 9 12 7 | 15 8 3 | 6 125 4 |
|-----------------------+-----------------------+-----------------------|
| 123 5 123 | 6 7 8 | 123 4 9 |
| 7 8 123 | 9 5 4 | 123 1236 126 |
| 4 6 9 | 3 1 2 | 7 8 5 |
|-----------------------+-----------------------+-----------------------|
| 128 7 4 | 28 3 6 | 5 9 128 |
| 12368 12 12358 | 28 9 15 | 4 7 1268 |
| 1268 9 1258 | 7 4 15 | 128 126 3 |
+-----------------------------------------------------------------------+
|
|
|
| Back to top |
|
 |
Mogulmeister
Joined: 03 May 2007
Posts: 1151
|
| Posted: Wed Jun 23, 2010 10:32 am Post subject: |
|
|
| Quote: | 1.Colouring on 8s r9c3 <> 8
2. X-Wing on 8s r78c1 <> 8
3. (18) W-wing r7c1<>1
4. <269> XY Wing r2c8<>2 |
|
|
| Back to top |
|
|
peterj
Joined: 26 Mar 2010
Posts: 974
Location: London, UK
|
| Posted: Wed Jun 23, 2010 5:37 pm Post subject: |
|
|
Still making myself look harder at implication of DPs (not really enjoying it...! I think this will be my last).. three steps
| Quote: | kite(8); r9c3<>8
DP(15) r89c36 r8c3=238 || r9c3=2
+ (3-8)r8c3=(8-2)r2c3=(2-1)r3c2=r8c2; r8c2=1
+ (8)r8c3 - (8=2)r8c4 - (2=1)r8c2; r8c2=1
+ (2)r89c3 - (2=1)r8c2; r8c2=1
w-wing(26) (6=2)r5c9 - r2c9=r2c8 - (2=6)r9c8; r5c8<>6, r8c9<>6 |
|
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Thu Jun 24, 2010 12:53 am Post subject: |
|
|
| I'll forgo the gruesome details, but I needed seven steps. |
|
| Back to top |
|
|
daj95376
Joined: 23 Aug 2008
Posts: 3854
|
| Posted: Thu Jun 24, 2010 1:16 am Post subject: |
|
|
| Marty R. wrote: | | I'll forgo the gruesome details, but I needed seven steps. |
Not bad! My solver says you were up against:
Kite <8>, X-Wing <8>, <15> UR Type 4 (optional), numerous choices for M/W-Wing, and an XY-Wing (if you skipped the UR). |
|
| Back to top |
|
|
Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
|
| Posted: Thu Jun 24, 2010 3:47 am Post subject: |
|
|
| I used two Type 4 URs on 15, XYZ on 128, ER on 8, X-Wing on 8, XY-Wing on 128 with pincer transport and XY-Wing on 682, also with pincer transport. |
|
| Back to top |
|
|
Mogulmeister
Joined: 03 May 2007
Posts: 1151
|
| Posted: Thu Jun 24, 2010 5:57 am Post subject: |
|
|
| daj95376 wrote: | | Marty R. wrote: | | I'll forgo the gruesome details, but I needed seven steps. |
Not bad! My solver says you were up against:
Kite <8>, X-Wing <8>, <15> UR Type 4 (optional), numerous choices for M/W-Wing, and an XY-Wing (if you skipped the UR). |
I did forego the UR (extraneous) but that may be one of the few times your solver and I were exactly in accord!! |
|
| Back to top |
|
|
tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
|
| Posted: Mon Jun 28, 2010 5:54 am Post subject: |
|
|
I tried again for an all AN(PTQ) solution for a puzzle, but once again I had to use another technique, an ALS-XZ, to complete the puzzle.
ANP(18=2)r17c1 - (2=1)r8c2; r89c1<>1
ANP(28=1)r7c14 - (1=8)r1c1 - r1c7 = r2c9; r7c9<>8
ANP(12=5)r23c8 - (5=1)r3c4 - r3c2 = r8c2 - r8c6 = r9c6* - r9c78 = r78c9; r2c9,r9c8<>1
ANT(128=6)r8c249 - (6=2)r9c8 - (2=15)r3c48 - r3c2 = (1)r8c2; r8c36<>1
ANP(12=8)r7c1|r8c2 - r1c1 = r1c7 - r2c9 = r8c9 - (8=2)r9c7; r9c1<>2
ANP(18=3)r1c17 - (3=15)r1c8|r3c8 - (1=2)r2c8 - (2=6)r9c8 - (6=8)r9c1 - (8=1)r1c1; r1c48<>1
At this point my code was:
| Code: | *-----------------------------------------------------------*
| 18 4 6 | 5 2 9 | 18 3 7 |
| 5 3 18 | 4 6 7 | 9 12 28 |
| 9 2 7 | 1 8 3 | 6 5 4 |
|-------------------+-------------------+-------------------|
| 123 5 123 | 6 7 8 | 123 4 9 |
| 7 8 123 | 9 5 4 | 123 126 26 |
| 4 6 9 | 3 1 2 | 7 8 5 |
|-------------------+-------------------+-------------------|
| 28 7 4 | 28 3 6 | 5 9 1 |
| 2368 1 238 | 28 9 5 | 4 7 68 |
| 68 9 5 | 7 4 1 | 28 26 3 | |
ALS XZ: A = (168)r19c1, B=(126)r29c8, X=6, Z=1; r1c7,r2c8<>1.
Ted |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
