View previous topic :: View next topic |
Author |
Message |
keith
Joined: 19 Sep 2005 Posts: 3355 Location: near Detroit, Michigan, USA
|
Posted: Sat May 28, 2011 1:32 am Post subject: Free Press May 27, 2011 |
|
|
I have done this one. Code: | Puzzle: FP052711
+-------+-------+-------+
| . . 2 | 1 8 6 | 3 . . |
| 4 . . | . . . | . . . |
| . . . | 9 . . | . . 6 |
+-------+-------+-------+
| 2 9 . | . . . | . . . |
| 3 4 . | 2 . 1 | . 7 9 |
| . . 8 | . . . | . 1 3 |
+-------+-------+-------+
| 8 . . | . . 4 | . . . |
| . . . | . . . | . . 2 |
| . . 4 | 8 2 9 | 6 . . |
+-------+-------+-------+
|
Keith |
|
Back to top |
|
|
Marty R.
Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
|
Posted: Sat May 28, 2011 4:25 am Post subject: |
|
|
I didn't read your hint before I did it, but I did have two VH steps.
XYZ-Wing (157); r3c3<>7
XY-Wing (257); r3c7<>7 |
|
Back to top |
|
|
keith
Joined: 19 Sep 2005 Posts: 3355 Location: near Detroit, Michigan, USA
|
Posted: Sat May 28, 2011 7:19 am Post subject: |
|
|
Marty,
Yes. There is lots of variability in the difficulty of these Friday Freep puzzles.
For this one, my notes say: XYZ 15-7; XY 25-7. Which looks like the same solution as yours.
Keith |
|
Back to top |
|
|
peterj
Joined: 26 Mar 2010 Posts: 974 Location: London, UK
|
Posted: Sat May 28, 2011 8:40 am Post subject: |
|
|
There's also a swordfish(7) that makes the same elimination as the xyz - and a few more |
|
Back to top |
|
|
tlanglet
Joined: 17 Oct 2007 Posts: 2468 Location: Northern California Foothills
|
Posted: Sat May 28, 2011 1:54 pm Post subject: |
|
|
Box3 and row3 has an interesting pattern of four cells that makes the identical elimination, r3c7<>7, viewed in four different ways……
#1: axy-wing(25-7) with vertex (25)r3c8 and fin (3)r3c6
If fin is true: (3)r3c6-(3=7)r3c3;
#2: (7=5)r1c9-(5=2)r3c8-als(2=37)r3c63;
#3: anp(37=2)r3c36-(2=5)r3c8-(5=7)r1c9;
#4: als_xz
als A=(57)r1c9
als B=(2357)r3c368
x=5
z=7
Ted |
|
Back to top |
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|