The New Sudoku Players' Forum

by **SteveG48** » Mon Mar 15, 2021 11:49 am

Code: Select all: *-----------* |..3|.4.|.7.| |..2|795|.1.| |...|...|4..| |---+---+---| |..9|...|..5| |..5|2.7|9..| |6..|...|3..| |---+---+---| |..6|...|...| |.9.|482|1..| |.4.|.3.|7..| *-----------*

by **Cenoman** » Mon Mar 15, 2021 3:28 pm

One-step solutions exist, but...

Code: Select all: +----------------------+--------------------+--------------------+ | 159-8 a56-8 3 | 168 4 168 | b25 7 289 | | 4 8-6* 2 | 7 9 5 | d68* 1 3 | | 1579-8 567-8 18 | 168 2 3 | 4 c569-8 89 | +----------------------+--------------------+--------------------+ | 27 27 9 | 3 1 4 | 68* 68* 5 | | 38* 38* 5 | 2 6 7 | 9 4 1 | | 6 1 4 | 89 5 89 | 3 2 7 | +----------------------+--------------------+--------------------+ | 12358* 2358* 6 | 159 7 19 | 25 3589* 4 | | 35 9 7 | 4 8 2 | 1 35 6 | | 125-8 4 18 | 1569 3 169 | 7 59-8 289 | +----------------------+--------------------+--------------------+

1. Jellyfish (8)r2457\c1278 => -8 r139c1, r13c2, r39c8
2. M2-Wing: (6=5)r1c2 - r1c7 = (5-6)r3c8 = (6)r2c7 => -6 r2c2; ste

by **Ngisa** » Mon Mar 15, 2021 10:49 pm

Code: Select all: +--------------------+----------------+--------------------+ | 1589 a568 3 | 168 4 168 |g2-5 7 f289 | | 4 a68 2 | 7 9 5 | 68 1 3 | | 15789 5678 a18 | 168 2 3 | 4 5689 89 | +--------------------+----------------+--------------------+ | 27 27 9 | 3 1 4 | 68 68 5 | | 38 a38 5 | 2 6 7 | 9 4 1 | | 6 1 4 | 89 5 89 | 3 2 7 | +--------------------+----------------+--------------------+ | 12358 b2358 6 |c159 7 c19 |b25 3589 4 | | 35 9 7 | 4 8 2 | 1 35 6 | | 1258 4 b18*|d15*69 3 d169 | 7 e589 e289 | +--------------------+----------------+--------------------+

((5=6|8*3*)r125c2,(1)r3c3)) - ((1=8*)r9c3, (8*3*=2|5)r7c27)) - (2|5=1|9)r7c46 - (1|9=65*)r9c46 - (5*8*=92)r9c89 - (2)r1c9 = (2)r1c7 => - 5r1c7; stte

by **Leren** » Mon Mar 15, 2021 11:09 pm

Code: Select all: *-----------------------------------------------* | 159-8 c568 3 | 168 4 168 |b25 7 b289 | | 4 ca68 2 | 7 9 5 |b68 1 3 | | 1579-8 567-8 1-8 | 168 2 3 | 4 5689 b89 | |-------------------+------------+--------------| | 27 27 9 | 3 1 4 | 68 68 5 | | 38 3-8 5 | 2 6 7 | 9 4 1 | | 6 1 4 | 89 5 89 | 3 2 7 | |-------------------+------------+--------------| | 12358 235-8 6 | 159 7 19 | 25 3589 4 | | 35 9 7 | 4 8 2 | 1 35 6 | | 1258 4 18 | 1569 3 169 | 7 589 289 | *-----------------------------------------------*

(8=6) r2c2 - (6=5) r1c79, r2c7, r3c9 - (5=8) r12c2 => - 8 r1c1, r3c123, r57c2; stte

Leren

by **pjb** » Mon Mar 15, 2021 11:32 pm

Code: Select all: 159-8 e568 3 | 168 4 168 |d25 7 289 4 a68 2 | 7 9 5 |b68 1 3 1579-8 567-8 1-8 | 168 2 3 | 4 c5689 89 ------------------------+----------------------+--------------------- 27 27 9 | 3 1 4 | 68 68 5 38 3-8 5 | 2 6 7 | 9 4 1 6 1 4 | 89 5 89 | 3 2 7 ------------------------+----------------------+--------------------- 12358 235-8 6 | 159 7 19 | 25 3589 4 35 9 7 | 4 8 2 | 1 35 6 1258 4 18 | 1569 3 169 | 7 589 289

(8=6*)r2c2 - (6)r2c7 = (6-5)r3c8 = (5)r1c7 - (5|6*=8)r1c2 => -8 r13c1, -8 r3c23, -8 r5c2, -8 r7c2; stte

Phil

by **SteveG48** » Tue Mar 16, 2021 12:33 am

Some beauties there!

Welcome home Clement!

by **Ngisa** » Tue Mar 16, 2021 6:12 am

SteveG48 wrote:Some beauties there!

Welcome home Clement!

Thank you. I had an accident.

by **jco** » Tue Mar 16, 2021 4:31 pm

Hello,

After basics,

Code: Select all: .------------------------------------------------. |b589-1 568 3 |a168 4 a168 | 25 7 c289 | | 4 68 2 | 7 9 5 | 68 1 3 | | 15789 5678 d18 | 68-1 2 3 | 4 5689 d89 | |-----------------+--------------+---------------| | 27 27 9 | 3 1 4 | 68 68 5 | | 38 38 5 | 2 6 7 | 9 4 1 | | 6 1 4 | 89 5 89 | 3 2 7 | |-----------------+--------------+---------------| | 12358 2358 6 | 159 7 19 | 25 3589 4 | | 35 9 7 | 4 8 2 | 1 35 6 | | 1258 4 18 | 1569 3 169 | 7 589 289 | '------------------------------------------------'

1. (1)r1c46=(1-9)r1c1=r1c9-(9=81)r3c39 => -1r1c1,-1r3c4

Code: Select all: .------------------------------------------------. | 589 568 3 | 168 4 168 | 25 7 289 | | 4 a68 2 | 7 9 5 |b68 1 3 | | 1579-8 567-8 1-8|d68 2 3 | 4 c5689 89 | |-----------------+--------------+---------------| | 27 27 9 | 3 1 4 | 68 68 5 | | 38 38 5 | 2 6 7 | 9 4 1 | | 6 1 4 | 89 5 89 | 3 2 7 | |-----------------+--------------+---------------| | 12358 2358 6 | 159 7 19 | 25 3589 4 | | 35 9 7 | 4 8 2 | 1 35 6 | | 1258 4 18 | 1569 3 169 | 7 589 289 | '------------------------------------------------'

2. W-Wing (8=6)r2c2-r2c7=r3c8-(6=8)r3c4 => -8 r3c123; ste

Regards,
jco

Steve Stumble 3/15/2021