The New Sudoku Players' Forum

by **ArkieTech** » Thu Sep 12, 2013 12:47 am

Code: Select all: *-----------* |4..|3..|..2| |..7|58.|...| |...|.2.|.6.| |---+---+---| |...|.3.|.74| |.65|2.4|13.| |37.|.9.|...| |---+---+---| |.8.|.4.|...| |...|.68|2..| |1..|..3|..9| *-----------*

by **Leren** » Thu Sep 12, 2013 1:08 am

Code: Select all: *-----------------------------------------------------------------------* | 4 59 Aa69-8 | 3 1 679 | 578 589 2 | |b26 1239 7 | 5 8 69 | 34 149 13 | | 58 1359 1389 | 4 2 79 | 3578 6 1357 | |-----------------------+-----------------------+-----------------------| |c28 12 Cd18-2 | 6 3 5 | 9 7 4 | | 9 6 5 | 2 7 4 | 1 3 8 | | 3 7 4 | 8 9 1 | 56 2 56 | |-----------------------+-----------------------+-----------------------| | 567 8 369 | 19 4 2 | 3567 15 13567 | | 57 3459 39 | 19 6 8 | 2 145 1357 | | 1 24 B26 | 7 5 3 | 468 48 9 | *-----------------------------------------------------------------------* L3 Wing with bi-value helper cell: (6) r1c3 = (6-2) r2c1 = (2-8) r4c1 = (8) r4c3; 6 r1c3 - (6=2) r9c3 - r4c3; => - 8 r1c3, - 2 r4c3; stte

Leren

by **pjb** » Thu Sep 12, 2013 1:56 am

Code: Select all: 4 a59 e689 | 3 1 67-9 | 578 58-9 2 d26 123-9 7 | 5 8 69 | 34 149 13 b58 135-9 138-9 | 4 2 79 | 3578 6 1357 ---------------------+----------------------+--------------------- c28 12 128 | 6 3 5 | 9 7 4 9 6 5 | 2 7 4 | 1 3 8 3 7 4 | 8 9 1 | 56 2 56 ---------------------+----------------------+--------------------- 567 8 369 | 19 4 2 | 3567 15 13567 57 3459 39 | 19 6 8 | 2 145 1357 1 24 26 | 7 5 3 | 468 48 9

(9=5) r1c2 - (5=8) r3c1- r1c3
(9=5) r1c2 - (5=8) r3c1- (8=2) r4c1 - (2=6) r2c1 - (68=9) r1c3 => -9 r1c68, r2c2, r3c23; stte

Phil

by **ArkieTech** » Thu Sep 12, 2013 11:32 am

Code: Select all: *--------------------------------------------------------------------* | 4 59 d69-8 | 3 1 679 | 578 589 2 | |c26 1239 7 | 5 8 69 | 34 149 13 | | 58 1359 1389 | 4 2 79 | 3578 6 1357 | |----------------------+----------------------+----------------------| |b28 12 a128 | 6 3 5 | 9 7 4 | | 9 6 5 | 2 7 4 | 1 3 8 | | 3 7 4 | 8 9 1 | 56 2 56 | |----------------------+----------------------+----------------------| | 567 8 369 | 19 4 2 | 3567 15 13567 | | 57 3459 39 | 19 6 8 | 2 145 1357 | | 1 24 26 | 7 5 3 | 468 48 9 | *--------------------------------------------------------------------* 8r4c3=(8-2)r4c1=(2-6)r2c1=6r1c3 => -8r1c3; lclste

by **Ngisa** » Thu Sep 12, 2013 1:08 pm

M-Wing and XY Chain
M-Wing 26: (6=2)r9c3-r1c3=(6-2)r2c1=(2)r2c2 => -2r9c2
After M-Wing

Code: Select all: +---------------+---------+-------------+ | 4 59 a68 | 3 1 b67 | 78 59 2 | | e26 1239 7 | 5 8 d69 | 4 19 13 | | 5-8 1359 1389 | 4 2 c79 | 378 6 1357 | +---------------+---------+-------------+ | f28 12 18 | 6 3 5 | 9 7 4 | | 9 6 5 | 2 7 4 | 1 3 8 | | 3 7 4 | 8 9 1 | 5 2 6 | +---------------+---------+-------------+ | 567 8 369 | 19 4 2 | 37 15 1357 | | 57 359 39 | 19 6 8 | 2 4 1357 | | 1 4 2 | 7 5 3 | 6 8 9 | +---------------+---------+-------------+

XY Chain
(8=6)r1c3-(6=7)r1c6-(7=9)r3c6-(9=6)r2c6-(6=2)r2c1-(2=8)r4c1 => -8r3c1; stte.

by **Marty R.** » Thu Sep 12, 2013 7:07 pm

Code: Select all: +---------------+----------+----------------+ | 4 59 689 | 3 1 679 | 578 589 2 | | 26 1239 7 | 5 8 69 | 34 149 13 | | 58 1359 1389 | 4 2 79 | 3578 6 1357 | +---------------+----------+----------------+ | 28 12 128 | 6 3 5 | 9 7 4 | | 9 6 5 | 2 7 4 | 1 3 8 | | 3 7 4 | 8 9 1 | 56 2 56 | +---------------+----------+----------------+ | 567 8 369 | 19 4 2 | 3567 15 13567 | | 57 3459 39 | 19 6 8 | 2 145 1357 | | 1 24 26 | 7 5 3 | 468 48 9 | +---------------+----------+----------------+

Play this puzzle online at the Daily Sudoku site

1) M-Wing (26) (2=6)r9c3-r1c3=(6-2)r2c1=r4c1=>r4c3<>2
2) XY-Wing (26-8), pivot r2c1=>r4c3<>8

Vanhegan Extreme September 11, 2013