The New Sudoku Players' Forum

by **ArkieTech** » Thu Nov 14, 2013 12:23 am

Code: Select all: *-----------* |.23|96.|...| |4..|.3.|62.| |..6|..8|...| |---+---+---| |.64|...|5.3| |...|...|...| |7.2|...|86.| |---+---+---| |...|5..|3..| |.41|.7.|..5| |...|.86|94.| *-----------*

by **Leren** » Thu Nov 14, 2013 12:33 am

Code: Select all: *--------------------------------------------------------------* | 18 2 3 | 9 6 14 | 147 5 1478 | | 4 15789 5789 | 17 3 15 | 6 2 189 | | 159 1579 6 | 1247 1245 8 | 14 3 149 | |--------------------+--------------------+--------------------| | 19 6 4 | 8 129 d127 | 5 e179 3 | | 13589 13589 589 | 6 1459 13457 | 147 179 2 | | 7 359 2 | 14 59 35 | 8 6 14 | |--------------------+--------------------+--------------------| | 289 789 789 | 5 124 c124 | 3 1-7 6 | | 6 4 1 | 3 7 9 | 2 8 5 | | 235 357 57 |b12 8 6 | 9 4 a17 | *--------------------------------------------------------------*

(7=1) r9c9 - (1=2) r9c4 - r7c6 = (2-7) r4c6 = (7) r4c8 => - 7 r7c8; stte

Leren

by **SteveG48** » Thu Nov 14, 2013 3:55 am

Code: Select all: .-------------------.---------------.--------------. | 18 2 3 | 9 6 14 | 47 5 478 | | 4 1589 589 | 7 3 15 | 6 2 89 | | 59 7 6 | 24 245 8 | 1 3 49 | :-------------------+---------------+--------------: | 19 6 4 | 8 129 27 | 5 179 3 | | 13589 13589 589 | 6 1459 357 | 47 179 2 | | 7 359 2 | 14 59 35 | 8 6 14 | :-------------------+---------------+--------------: | 289 89 789 | 5 124 24 | 3 17 6 | | 6 4 1 | 3 7 9 | 2 8 5 | | 235 35 57 | 12 8 6 | 9 4 17 | '-------------------'---------------'--------------'

From here I used an XY-chain: 5-r1c3-9-r4c1-1-r1c1-8 (removing 8 at r1c9, then 4/7 pair removing 4 at r1c6) -r1c6-1-r2c6-5 => r3c5<>5

by **pjb** » Thu Nov 14, 2013 6:44 am

Code: Select all: 18 2 3 | 9 6 14 | 147 5 1478 4 15789 5789 | 17 3 15 | 6 2 189 159 1579 6 | 1247 1245 8 | 14 3 149 ---------------------+----------------------+--------------------- 19 6 4 | 8 129 c127 | 5 b179 3 13589 13589 589 | 6 1459 13457 | 147 179 2 7 359 2 | 14 59 35 | 8 6 14 ---------------------+----------------------+--------------------- 289 789 789 | 5 24-1 d24-1 | 3 a17 6 6 4 1 | 3 7 9 | 2 8 5 235 357 57 |e12 8 6 | 9 4 7-1

(1=7) r7c8 - r4c8 = (7-2) r4c6 = r7c6 - (2=1) r9c4 => -1 r7c56, r9c9; stte

Phil

by **tlanglet** » Thu Nov 14, 2013 12:34 pm

I was not able to readily find an alternate logic path and settled for a unique starting point...........

Code: Select all: *--------------------------------------------------------------------* | 18 2 3 | 9 6 14 | 147 5 1478 | | 4 15789 5789 | 17 3 15 | 6 2 189 | | 159 1579 6 | 1247 1245 8 | 14 3 149 | |----------------------+----------------------+----------------------| | 19 6 4 | 8 129 d127 | 5 c179 3 | | 13589 13589 589 | 6 1459 13457 | 147 179 2 | | 7 359 2 | 14 59 35 | 8 6 14 | |----------------------+----------------------+----------------------| | 89-2 789 789 | 5 124 e124 | 3 b17 6 | | 6 4 1 | 3 7 9 | 2 8 5 | |*235 *357 *57 | 1-2 8 6 | 9 4 a17 | *--------------------------------------------------------------------*

ANS(2=357)r9c123-7r9c9=r7c8-r4c8=(7-2)r4c6=2r7c6 => r7c1,r9c4 <> 2

Ted

by **Marty R.** » Thu Nov 14, 2013 5:37 pm

Code: Select all: +------------------+-----------------+--------------+ | 18 2 3 | 9 6 14 | 147 5 1478 | | 4 15789 5789 | 17 3 15 | 6 2 189 | | 159 1579 6 | 1247 1245 8 | 14 3 149 | +------------------+-----------------+--------------+ | 19 6 4 | 8 129 127 | 5 179 3 | | 13589 13589 589 | 6 1459 13457 | 147 179 2 | | 7 359 2 | 14 59 35 | 8 6 14 | +------------------+-----------------+--------------+ | 289 789 789 | 5 124 124 | 3 17 6 | | 6 4 1 | 3 7 9 | 2 8 5 | | 235 357 57 | 12 8 6 | 9 4 17 | +------------------+-----------------+--------------+

Play this puzzle online at the Daily Sudoku site

Same elimination as Ted's.

2r7c6=(2-7)r4c6=r5c6-r5c78=r4c8-r7c8=r9c9-(735=2)r9c231=>r9c4<>2

Dan's Drabble November 14, 2013