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by **ArkieTech** » Fri Jan 24, 2014 12:05 am

Code: Select all: *-----------* |8..|.9.|7..| |.5.|..4|93.| |...|7..|..4| |---+---+---| |.2.|...|..6| |...|3.2|...| |5..|...|.8.| |---+---+---| |1..|..3|...| |.76|8..|.5.| |..8|.7.|..1| *-----------*

by **Leren** » Fri Jan 24, 2014 12:44 am

Code: Select all: *--------------------------------------------------------------* | 8 34 34 | 1256 9 156 | 7 16 25 | | 67 5 17 | 126 a1268 4 | 9 3 28 | | 9 16 2 | 7 3 e5-8 |d58 16 4 | |--------------------+--------------------+--------------------| | 347 2 13479 | 149 b1458 1789 |c1345 479 6 | | 467 8 1479 | 3 1456 2 | 145 479 579 | | 5 16 13479 | 1469 146 1679 | 2 8 379 | |--------------------+--------------------+--------------------| | 1 49 5 | 2469 246 3 | 468 2479 789 | | 234 7 6 | 8 124 19 | 34 5 39 | | 234 349 8 | 24569 7 569 | 346 249 1 | *--------------------------------------------------------------*

L2 Wing: (8) r2c5 = (8-5) r4c5 = r4c7 - r3c7 = (5) r3c6 => - 8 r3c6; stte

Leren

by **SteveG48** » Fri Jan 24, 2014 1:05 am

Code: Select all: *--------------------------------------------------------------------* | 8 34 34 | 1256 9 156 | 7 16 g25 | | 67 5 17 | 126 c1268 4 | 9 3 b28 | | 9 16 2 | 7 3 58 |a8-5 16 4 | *----------------------+----------------------+----------------------| | 347 2 13479 | 149 d1458 1789 | 1345 479 6 | | 467 8 1479 | 3 e1456 2 | 145 479 f579 | | 5 16 13479 | 1469 146 1679 | 2 8 379 | *----------------------+----------------------+----------------------| | 1 49 5 | 2469 246 3 | 468 2479 789 | | 234 7 6 | 8 124 19 | 34 5 39 | | 234 349 8 | 24569 7 569 | 346 249 1 | *--------------------------------------------------------------------*

(5-8)r3c7 = r2c9 - r2c5 = (8-5)r4c5 = r5c5 - r5c9 = (5)r1c9 => -5 r3c7 ; stte

by **pjb** » Fri Jan 24, 2014 3:57 am

Code: Select all: 8 34 34 | 1256 9 156 | 7 16 25 67 5 17 | 126 b1268 4 | 9 3 28 9 16 2 | 7 3 a58 | 8-5 16 4 ---------------------+----------------------+--------------------- 347 2 13479 | 149 c1458 1789 |d1345 479 6 467 8 1479 | 3 1456 2 | 145 479 579 5 16 13479 | 1469 146 1679 | 2 8 379 ---------------------+----------------------+--------------------- 1 49 5 | 2469 246 3 | 468 2479 789 234 7 6 | 8 124 19 | 34 5 39 234 349 8 | 24569 7 569 | 346 249 1

(5=8) r3c6 - r2c5 = (8-5) r4c5 = r4c7 => -5 r3c7; stte

Phil

by **tlanglet** » Fri Jan 24, 2014 2:53 pm

Code: Select all: *--------------------------------------------------------------------* | 8 34 34 | 126-5 9 16-5 | 7 16 a25 | | 67 5 17 | 126 1268 4 | 9 3 28 | | 9 16 2 | 7 3 f58 | 8-5 16 4 | |----------------------+----------------------+----------------------| | 347 2 13479 | 149 d1458 e1789 | 1345 479 6 | | 467 8 1479 | 3 c1456 2 | 145 479 b579 | | 5 16 13479 | 1469 146 1679 | 2 8 379 | |----------------------+----------------------+----------------------| | 1 49 5 | 2469 246 3 | 468 2479 789 | | 234 7 6 | 8 124 19 | 34 5 39 | | 234 349 8 | 24569 7 569 | 346 249 1 | *--------------------------------------------------------------------*

A variation of the same logic used by Leren and Phil......

5r1c9=5r5c9-5r5c5=(5-8)r4c5=8r4c6-(8=5)r3c6 => r1c46, r3c7<>5

Ted

by **Marty R.** » Fri Jan 24, 2014 7:07 pm

Code: Select all: +---------------+-----------------+---------------+ | 8 34 34 | 1256 9 156 | 7 16 25 | | 67 5 17 | 126 1268 4 | 9 3 28 | | 9 16 2 | 7 3 58 | 58 16 4 | +---------------+-----------------+---------------+ | 347 2 13479 | 149 1458 1789 | 1345 479 6 | | 467 8 1479 | 3 1456 2 | 145 479 579 | | 5 16 13479 | 1469 146 1679 | 2 8 379 | +---------------+-----------------+---------------+ | 1 49 5 | 2469 246 3 | 468 2479 789 | | 234 7 6 | 8 124 19 | 34 5 39 | | 234 349 8 | 24569 7 569 | 346 249 1 | +---------------+-----------------+---------------+

Play this puzzle online at the Daily Sudoku site

Another variation of everything above.

5r4c7=(5-8)r4c5=r4c6-(8=5)r3c6=>r3c7<>5

January 24, 2014