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Jan 16 VH

 
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 959
Location: Rimini, Italy
PostPosted: Thu Jan 16, 2025 4:04 pm    Post subject: Jan 16 VH Reply with quote
Hi everyone,

Code:

+-----------+---------+-------+
| 2   1  8  | 6  9  7 | 3 4 5 |
| 59  59 7  | 1  3  4 | 8 6 2 |
| 6   4  3  | 2  5  8 | 1 7 9 |
+-----------+---------+-------+
| 47  2  1  | 3  47 6 | 9 5 8 |
| 8   57 45 | 47 2  9 | 6 1 3 |
| 39  39 6  | 8  1  5 | 7 2 4 |
+-----------+---------+-------+
| 347 37 2  | 9  47 1 | 5 8 6 |
| 57  8  9  | 57 6  2 | 4 3 1 |
| 1   6  45 | 45 8  3 | 2 9 7 |
+-----------+---------+-------+

Play this puzzle online at the Daily Sudoku site

Quote:

XY-Wing 4,5,7 in r48c1,r5c3 = r9c3<>5
or
XY-Wing 4,5,7 in r48c1,r9c3 = r5c3,r7c1<>4
or
XYZ-Wing 3,4,7 in r47c1,r7c2 = r8c1<>7
or
Skyscraper with 7 in r4c5,r5c2 SL in r7c25 = r4c1,r5c4<>7
or
Skyscraper with 7 in r5c2,r8c1 SL in r58c4 = r4c1,r7c2<>7
or
Skyscraper with 7 in r4c5,r8c4 SL in r48c1 = r5c4,r7c5<>7
or
Skyscraper with 7 in r7c2,r8c4 SL in r5c24 = r7c5,r8c1<>7
or
BUG + 1 = r7c1<>3, r7c1<>4
or
W-Wing 4,7 in r4c1,r5c4 SL with 7 in r8c14 = r4c5,r5c3<>4
or
W-Wing 4,7 in r4c1,r7c5 SL with 7 in r8c14 = r4c5,r7c1<>4
or
W-Wing 4,7 in r4c1,r7c5 SL with 7 in r57c2 = r4c5,r7c1<>4
or
W-Wing 5,7 in r5c2,r8c1 SL with 5 in r2c12 = r4c1,r7c2<>7
or
W-Wing 5,7 in r5c2,r8c1 SL with 5 in r59c3 = r4c1,r7c2<>7
or
W-Wing 4,7 in r5c4,r7c5 SL with 7 in r57c2 = r4c5,r9c4<>4
or
Finned X-Wing with 7 in r47c15 finned in r7c2 = r8c1<>7
or
Finned X-Wing with 7 in r47c15 finned in r8c1 = r7c2<>7


Ciao Gianni
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strmckr



Joined: 18 Aug 2009
Posts: 66
PostPosted: Sun Jan 26, 2025 5:38 am    Post subject: Reply with quote
Interesting, A person still on this old board posting puzzles daily.

Smile

WXYZ - Wing: A=r48c1 {457}, B=b7p124 {3457}, X:(AB=4), Z:(AB=57) => r8c1 <> 7; r2c1,r8c4,r9c3 <> 5

ALS - W Ring: (4=7)r4c1-(7)r4c5=(7)r7c5-(7)r7c12=(34)r7c12-(4)r4c1 => r8c1 <> 7

Dual Empty Rectangle: (7)(r8c4=r5c4-r5c2=r4c1-r8c1=r8c4) => r5c4,r7c5,r8c1 <> 7; r8c4 <> 5

Rec't Kite: (7)(r7c12=r7c5-r4c5=r5c4-r5c2=r7c2) => r7c5,r8c1 <> 7

3x Eri : (7)(r5c2=r4c1-r4c5=r5c4-r8c4=r7c5) => r7c2 <> 7

W-Ring: (5)r2c1=(5)r2c2-(5=7)r5c2-(7)r5c4=(7)r8c4-(7=5)r8c1-(5)r2c1 => r4c1,r7c2 <> 7

W-Dual Wing: (7=5)r5c2-(5)r2c2=(5)r2c1-(5=7)r8c1-(7)r7c2=(7)r5c2 => r4c1,r5c4,r7c2 <> 7; r5c2 <> 5

S-Wing: (5)r5c3=(5)r9c3-(5=7)r8c1-(7)r7c2=(7)r5c2 => r5c2 <> 5

M2-Wing: (7=4)r4c1-(4)r4c5=(4-7)r5c4=(7)r8c4 => r8c1 <> 7

M3-Wing: (3=7)r7c2-(7)r5c2=(7-4)r4c1=(4)r7c1 => r7c1 <> 3

L(1)-Ring: (7)(r4c1=r4c5-r7c5=r8c4-r5c4=r5c2-r4c1) => b7p24 <> 7

L(1)-Wing: (7)(r4c5=r4c1-r8c1=r8c4-r5c4=r4c5) => r4c1,r5c4,r7c5 <> 7; r4c5 <> 4

H(1)-Wing: (4=7)r4c1-(7)r8c1=(7)r8c4-(7)r5c4=(7)r4c5 => r4c1 <> 7; r4c5 <> 4

H(2)-Wing: (7)r4c5=(7)r4c1-(7=5)r8c1-(5=7)r8c4 => r5c4,r7c5 <> 7

H(3)-Wing: (4)r4c1=(4)r7c1-(4=5)r9c3-(5=7)r8c1 => r4c1 <> 7

Strong-Wing: (5)r5c3=(5-4)r9c3=(4-3)r7c1=(3-7)r7c2=(7)r5c2 => r5c2 <> 5

iXY-Wing: (7)r5c2=(7-3)r7c2=(3-4)r7c1=(4-7)r4c1=(7)r5c2 => r4c1,r5c4,r7c2 <> 7; r5c2 <> 5

iW-Ring: (5)r2c1=(5-7)r8c1=(7)r8c4-(7)r5c4=(7-5)r5c2=(5)r2c2-(5)r2c1 => r4c1,r7c2 <> 7

iS-Wing: (5)r8c1=(5)r9c3-(5)r5c3=(5-7)r5c2=(7)r7c2-(7)r7c5=(7)r8c4 => r8c1 <> 7; r8c4 <> 5

iM(2)-Wing: (7)r8c4=(7-4)r5c4=(4)r5c3-(4=7)r4c1-(7)r8c1=(7)r8c4 => r5c4,r7c5,r8c1 <> 7; r8c4 <> 5

iM(3)-Wing: (4)r4c1=(4-5)r5c3=(5)r9c3-(5=7)r8c1-(7)r4c1=(7)r4c5 => r4c1 <> 7; r4c5 <> 4

iH(1)-Ring: (4)r4c1=(4-7)r4c5=(7)r7c5-(7)r8c4=(7)r5c4-(7)r5c2=(7-4)r4c1 => b7p24 <> 7

not sure what these are i have the definition located here,

http://forum.enjoysudoku.com/named-chains-wings-rings-structure-for-i-ding-in-code-t42435.html

Smile
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