The New Sudoku Players' Forum

by **ArkieTech** » Sat Sep 26, 2015 11:19 pm

Code: Select all: *-----------* |.2.|.91|76.| |...|62.|...| |86.|..3|...| |---+---+---| |..7|...|93.| |.5.|.8.|.2.| |.86|...|5..| |---+---+---| |...|1..|.42| |...|.38|...| |.31|27.|.9.| *-----------*

by **SteveG48** » Sat Sep 26, 2015 11:35 pm

Code: Select all: *---------------------------------------------------* | 34 2 345 | 8 9 1 | 7 6 35 | | 17 17 39 | 6 2 5 | 4 8 39 | | 8 6 59 | 7 4 3 | 2 15 159 | *----------------+-----------------+----------------| | 124 1-4 7 |b*45 56 c246 | 9 3 8 | | 349 5 34 | b349 8 7 | 16 2 16 | | 239 8 6 | 39 1 29 | 5 7 4 | *----------------+-----------------+----------------| | 567 79 8 | 1 56 69 | 3 4 2 | | 456 *49 2 |a*459 3 8 | 16 15 7 | | 456 3 1 | 2 7 46 | 8 9 56 | *---------------------------------------------------* Almost XY-wing: 459, pivot r8c4, wings r4c4,r8c2 4r8c4 - r45c4 = r4c6 => -4 r4c2 || XY-wing => -4 r4c2 ; stte

Or:

(4=2569)b5p1239 - 9r56c4 = r8c4 - (9=4)r8c2 => -4 r4c2

by **bat999** » Sun Sep 27, 2015 1:06 am

Code: Select all: .-----------------.-----------------.-------------. | 34 2 345 | 8 9 1 | 7 6 35 | | 1-7 a17 39 | 6 2 5 | 4 8 39 | | 8 6 59 | 7 4 3 | 2 15 159 | :-----------------+-----------------+-------------: | 124 b14 7 | b45 b56 b246 | 9 3 8 | | 349 5 34 | 349 8 7 | 16 2 16 | | 239 8 6 | 39 1 c29 | 5 7 4 | :-----------------+-----------------+-------------: | d567 9-7 8 | 1 d56 c69 | 3 4 2 | | 456 49 2 | 459 3 8 | 16 15 7 | | 456 3 1 | 2 7 46 | 8 9 56 | '-----------------'-----------------'-------------'

(7=1)r2c2 - (1=2)r4c2456 - (2=6)r67c6 - (6=7)r7c15 => -7 r2c1,r7c2; stte
8-)

by **Marty R.** » Sun Sep 27, 2015 1:35 am

Code: Select all: +------------+------------+-----------+ | 34 2 345 | 8 9 1 | 7 6 35 | | 17 17 39 | 6 2 5 | 4 8 39 | | 8 6 59 | 7 4 3 | 2 15 159 | +------------+------------+-----------+ | 124 14 7 | 45 56 246 | 9 3 8 | | 349 5 34 | 349 8 7 | 16 2 16 | | 239 8 6 | 39 1 29 | 5 7 4 | +------------+------------+-----------+ | 567 79 8 | 1 56 69 | 3 4 2 | | 456 49 2 | 459 3 8 | 16 15 7 | | 456 3 1 | 2 7 46 | 8 9 56 | +------------+------------+-----------+

Play this puzzle online at the Daily Sudoku site

(9=2)r6c6-(2=4561)r4c2456-(1=79)r27c2=> -9r7c6

by **Leren** » Sun Sep 27, 2015 6:15 am

Code: Select all: *--------------------------------------------------------------* | 34 2 345 | 8 9 1 | 7 6 35 | | 17 a17 39 | 6 2 5 | 4 8 39 | | 8 6 59 | 7 4 3 | 2 15 159 | |--------------------+--------------------+--------------------| | 124 a14 7 |b45 b56 b246 | 9 3 8 | | 349 5 34 | 349 8 7 | 16 2 16 | | 239 8 6 | 39 1 b29 | 5 7 4 | |--------------------+--------------------+--------------------| | 567 a79 8 | 1 56 6-9 | 3 4 2 | | 456 49 2 | 459 3 8 | 16 15 7 | | 456 3 1 | 2 7 46 | 8 9 56 | *--------------------------------------------------------------*

ALS XZ Rule: X = 4, Z = 9: (9=4) r247c2 - (4=9) r4c456, r6c6 => - 9 r7c6; stte

Leren

by **JC Van Hay** » Sun Sep 27, 2015 7:04 am

Code: Select all: +------------------+----------------+-------------+ | 34 2 345 | 8 9 1 | 7 6 35 | | 17 17 39 | 6 2 5 | 4 8 39 | | 8 6 59 | 7 4 3 | 2 15 159 | +------------------+----------------+-------------+ | 124 14 7 | 45 56 246 | 9 3 8 | | 4(39) 5 -4(3) | (349) 8 7 | 16 2 16 | | 2(39) 8 6 | (39) 1 29 | 5 7 4 | +------------------+----------------+-------------+ | 567 79 8 | 1 56 69 | 3 4 2 | | 456 49 2 | 459 3 8 | 16 15 7 | | 456 3 1 | 2 7 46 | 8 9 56 | +------------------+----------------+-------------+ 3r5c3=[UR(39)r56c14=4r5c4]-(4=3)r5c3; ste

or

Code: Select all: +------------------+----------------+-------------+ | 34 2 345 | 8 9 1 | 7 6 35 | | 17 17 39 | 6 2 5 | 4 8 39 | | 8 6 59 | 7 4 3 | 2 15 159 | +------------------+----------------+-------------+ | (124) (14) 7 | 45 56 246 | 9 3 8 | | (349) 5 3-4 | (349) 8 7 | 16 2 16 | | (239) 8 6 | (39) 1 29 | 5 7 4 | +------------------+----------------+-------------+ | 567 79 8 | 1 56 69 | 3 4 2 | | 456 49 2 | 459 3 8 | 16 15 7 | | 456 3 1 | 2 7 46 | 8 9 56 | +------------------+----------------+-------------+ UR(39)r56c14=*[4r5c17=*NT(124)r6c1,r4c12]-(4=3)r5c3; ste

...

by **pjb** » Sun Sep 27, 2015 7:36 am

Code: Select all: 34 2 345 | 8 9 1 | 7 6 35 17 17 39 | 6 2 5 | 4 8 39 8 6 59 | 7 4 3 | 2 15 159 ------------------------+----------------------+--------------------- 124 a14 7 | 5-4 56 26-4 | 9 3 8 39-4 5 3-4 |d349 8 7 | 16 2 16 239 8 6 |d39 1 29 | 5 7 4 ------------------------+----------------------+--------------------- 567 79 8 | 1 56 69 | 3 4 2 456 b49 2 |c459 3 8 | 16 15 7 456 3 1 | 2 7 46 | 8 9 56

(4)r4c2 = (4-9)r8c2 = r8c4 - (9=4)r56c4 => -4 r4c46, r5c13; stte

Phil

by **Ngisa** » Sun Sep 27, 2015 4:38 pm

Code: Select all: +------------+------------+-----------+ | a34 2 45-3 | 8 9 1 | 7 6 35 | | 17 17 9-3 | 6 2 5 | 4 8 39 | | 8 6 59 | 7 4 3 | 2 15 159 | +------------+------------+-----------+ | 124 14 7 | 45 56 246 | 9 3 8 | | 49-3 5 e34 | d349 8 7 | 16 2 16 | | 29-3 8 6 | d39 1 29 | 5 7 4 | +------------+------------+-----------+ | 567 79 8 | 1 56 69 | 3 4 2 | | b456 c49 2 | d459 3 8 | 16 15 7 | | b456 3 1 | 2 7 46 | 8 9 56 | +------------+------------+-----------+

(3=4)r1c1-r89c1=(4-9)r8c2=(934)r568c4-(4=3)r5c3 = -3r5c3, r1c3, r56c1 stte

Clement

by **eleven** » Sun Sep 27, 2015 5:03 pm

Many options here.

Code: Select all: +----------------+----------------+----------------+ |#34 2 #345 | 8 9 1 | 7 6 35 | | 17 17 39 | 6 2 5 | 4 8 39 | | 8 6 59 | 7 4 3 | 2 15 159 | +----------------+----------------+----------------+ | 124 14 7 |b45 56 246 | 9 3 8 | |#349 5 #34 |a349 8 7 | 16 2 16 | | 239 8 6 | 39 1 29 | 5 7 4 | +----------------+----------------+----------------+ | 567 79 8 | 1 56 69 | 3 4 2 | |-456 c49 2 |b459 3 8 | 16 15 7 | |-456 3 1 | 2 7 46 | 8 9 56 | +----------------+----------------+----------------+

x-wing 4r15c13=4r5c4-(4=9)r48c4-(9=4)r8c2 => r89c1<>4

September 27, 2015