The New Sudoku Players' Forum

by **ArkieTech** » Tue Feb 18, 2014 12:22 am

Code: Select all: *-----------* |..4|..7|5..| |...|51.|...| |.1.|.6.|.8.| |---+---+---| |..1|2..|..4| |.85|...|96.| |2..|..5|3..| |---+---+---| |.3.|.7.|.4.| |...|.59|...| |..7|3..|2..| *-----------*

by **Leren** » Tue Feb 18, 2014 12:39 am

Code: Select all: *--------------------------------------------------------------* | 689 69 4 | 89 2 7 | 5 13 13 | | 789 79 3 | 5 1 48 | 46 2 69 | | 5 1 2 | 49 6 3 | 47 8 79 | |--------------------+--------------------+--------------------| | 3679 679 1 | 2 b389 b68 | 78 5 4 | | 37 8 5 | 147 c34 14 | 9 6 2 | | 2 4 69 |b678 b89 5 | 3 a17 a178 | |--------------------+--------------------+--------------------| | 169 3 689 | 168 7 2 | 168 4 5 | | 146 2 68 | 1468 5 9 | 1678 37 3678 | | 146 5 7 | 3 c48 1468 | 2 9 6-8 | *--------------------------------------------------------------*

ALS XY Wing: (8=7) r6c89 - (7=3) r4c56, r6c45 - (3=8) r59c5 => - 8 r9c9; stte

Leren

by **tlanglet** » Tue Feb 18, 2014 1:27 am

Code: Select all: *-----------------------------------------------------------* | 689 69 4 | 89 2 7 | 5 *13 *13 | | 789 79 3 | 5 1 48 | 46 2 69 | | 5 1 2 | 49 6 3 | 4-7 8 79 | |-------------------+-------------------+-------------------| | 3679 679 1 | 2 389 68 |E78 5 4 | | 37 8 5 | 147 34 14 | 9 6 2 | | 2 4 69 | 678 89 5 | 3 *17 *178 | |-------------------+-------------------+-------------------| | 169 3 689 | 168 7 2 | 168 4 5 | | 146 2 68 | 1468 5 9 |E1678 *37 *3678 | | 146 5 7 | 3 48 1468 | 2 9 68 | *-----------------------------------------------------------*

BUG-Lite(137)r168c89 with external SIS 7r48c7 => r3c7<>7

Ted

by **SteveG48** » Tue Feb 18, 2014 1:52 am

Code: Select all: *-----------------------------------------------------------* | 689 69 4 | 89 2 7 | 5 13 13 | | 789 79 3 | 5 1 48 | 46 2 69 | | 5 1 2 | 49 6 3 | 47 8 79 | *-------------------+-------------------+-------------------| | 3679 679 1 | 2 389 68 | 78 5 4 | |c37 8 5 |d147 b34 14 | 9 6 2 | | 2 4 69 |e678 89 5 | 3 f17 f178 | *-------------------+-------------------+-------------------| | 169 3 689 | 168 7 2 | 168 4 5 | | 146 2 68 | 1468 5 9 | 1678 37 3678 | | 146 5 7 | 3 a48 1468 | 2 9 6-8 | *-----------------------------------------------------------*

Much like Leren's, I'm afraid:

(8=4)r9c5 - (4=3)r5c5 - (3=7)r5c1 - r5c4 = r6c4 - (7=18)r6c89 => -8 r9c9 ; stte

by **pjb** » Tue Feb 18, 2014 4:03 am

Regarding Ted's BUG-Lite(137)r168c89, don't the cells r68c9 constitute a "quantum" 68, which coupled with r9c9 => -6 r2c9; stte

Phil

by **tlanglet** » Tue Feb 18, 2014 1:43 pm

pjb wrote:Regarding Ted's BUG-Lite(137)r168c89, don't the cells r68c9 constitute a "quantum" 68, which coupled with r9c9 => -6 r2c9; stte

Phil

Yes, the internal SIS is (68)r68c9, which combined with (68)r9c9 form a LS(68) => r2c9<>6

Ted

by **Marty R.** » Wed Feb 19, 2014 3:12 am

Code: Select all: +--------------+---------------+--------------+ | 689 69 4 | 89 2 7 | 5 13 13 | | 789 79 3 | 5 1 48 | 46 2 69 | | 5 1 2 | 49 6 3 | 47 8 79 | +--------------+---------------+--------------+ | 3679 679 1 | 2 389 68 | 78 5 4 | | 37 8 5 | 147 34 14 | 9 6 2 | | 2 4 69 | 678 89 5 | 3 17 178 | +--------------+---------------+--------------+ | 169 3 689 | 168 7 2 | 168 4 5 | | 146 2 68 | 1468 5 9 | 1678 37 3678 | | 146 5 7 | 3 48 1468 | 2 9 68 | +--------------+---------------+--------------+

Play this puzzle online at the Daily Sudoku site

7r4c7=r4c12-(7=3)r5c1-(3=4)r5c5-(4=8)r9c5-(8=6)r9c9-(6=9)r2c9-(9=7)r3c9=>r3c7<>7

February 18, 2014