The New Sudoku Players' Forum

by **ArkieTech** » Mon Jan 15, 2018 1:17 pm

Code: Select all: *-----------* |...|...|3..| |1.8|93.|...| |..7|.14|..6| |---+---+---| |.1.|...|6.4| |.7.|.9.|.1.| |5.4|...|.7.| |---+---+---| |6..|74.|9..| |...|.68|4.5| |..2|...|...| *-----------*

by **SteveG48** » Mon Jan 15, 2018 3:31 pm

Code: Select all: *------------------------------------------------------------* | 9 2456 b56 |c2568 278 2567 | 3 458 1 | | 1 456 8 | 9 3 56 | 7 45 2 | | 3 25 7 |d258 1 4 | e8-5 9 6 | *-------------------+-------------------+--------------------| | 28 1 9 |d258 278 2357 | 6 e38-5 4 | |a28 7 a36 | 4 9 236-5 |af258 1 a38 | | 5 36 4 | 16 28 136 | 28 7 9 | *-------------------+-------------------+--------------------| | 6 35 135 | 7 4 12 | 9 238 38 | | 7 9 13 | 12 6 8 | 4 23 5 | | 4 8 2 | 3 5 9 | 1 6 7 | *------------------------------------------------------------*

(5=2368)r5c1379 - (6=5)r1c3 - r1c4 = r34c4 - (r3c7)&(r4c8) = 5r5c7 => -5 r3c7,r4c8,r5c6 ; stte

by **Cenoman** » Mon Jan 15, 2018 5:52 pm

Code: Select all: +--------------------+----------------------+-------------------+ | 9 2456 b56 | a2568# 278 2567 | 3 458 1 | | 1 456 8 | 9 3 56 | 7 45 2 | | 3 25 7 | 258* 1 4 | 58* 9 6 | +--------------------+----------------------+-------------------+ | 28 1 9 | 258* 278 2357 | 6 358 4 | | 28 7 c36 | 4 9 d236-5 | 258* 1 38 | | 5 36 4 | 16 28 136 | 28 7 9 | +--------------------+----------------------+-------------------+ | 6 35 135 | 7 4 12 | 9 238 38 | | 7 9 13 | 12 6 8 | 4 23 5 | | 4 8 2 | 3 5 9 | 1 6 7 | +--------------------+----------------------+-------------------+

Almost skyscraper (5)c47 + rfr1c4
[SS(5)r4c4*=r3c4-r3c7=r5c7]
(5)r1c4 - (5=6)r1c3 - r5c3 = (6)r5c6
=> -5 r5c6; stte

by **Leren** » Mon Jan 15, 2018 8:03 pm

Two Skyscrapers :

Code: Select all: *---------------------------------------------* | 9 2456 5-6 | 2568 278 2567 | 3 458 1 | | 1 a456 8 | 9 3 b56 | 7 45 2 | | 3 25 7 | 258 1 4 | 58 9 6 | |---------------+----------------+------------| | 28 1 9 | 258 278 2357 | 6 358 4 | | 28 7 d36 | 4 9 c2356 | 258 1 38 | | 5 3-6 4 | 16 28 136 | 28 7 9 | |---------------+----------------+------------| | 6 35 135 | 7 4 12 | 9 238 38 | | 7 9 13 | 12 6 8 | 4 23 5 | | 4 8 2 | 3 5 9 | 1 6 7 | *---------------------------------------------*

(6) r2c2 = r2c6 - r6c6 = (6) r6c3 => - 6 r1c3, r6c2

Code: Select all: *-----------------------------------------* | 9 46 5 | 268 278 267 | 3 48 1 | | 1 46 8 | 9 3 b56 | 7 a45 2 | | 3 2 7 | 58 1 4 | 8-5 9 6 | |----------+---------------+--------------| | 28 1 9 | 258 278 2357 | 6 38-5 4 | | 28 7 6 | 4 9 c235 |d258 1 38 | | 5 3 4 | 16 28 16 | 28 7 9 | |----------+---------------+--------------| | 6 5 13 | 7 4 12 | 9 238 38 | | 7 9 13 | 12 6 8 | 4 23 5 | | 4 8 2 | 3 5 9 | 1 6 7 | *-----------------------------------------*

(5) r2c8 = r2c6 - r5c6 = (5) r5c7 => - 5 r3c7, r4c8; stte

Hodoku agrees, Leren

by **pjb** » Tue Jan 16, 2018 12:13 am

Code: Select all: 9 2456 f56 |b258-6 278 257-6 | 3 e458 1 1 45-6 8 | 9 3 a56 | 7 b45 2 3 25 7 |b258 1 4 | 58 9 6 ------------------------+----------------------+--------------------- 28 1 9 |c258 278 2357 | 6 d358 4 28 7 36 | 4 9 2356 | 258 1 38 5 36 4 | 16 28 136 | 28 7 9 ------------------------+----------------------+--------------------- 6 35 135 | 7 4 12 | 9 238 38 7 9 13 | 12 6 8 | 4 23 5 4 8 2 | 3 5 9 | 1 6 7

(6=5)r2c6 - r13c4(r2c8) = r4c4 - r4c8 = r1c8 - (5=6)r1c3 => -6 r1c46, r2c2; stte

Phil

by **rjamil** » Tue Jan 16, 2018 5:44 pm

Leren wrote:Two Skyscrapers :

Or Two 2-String Kites; stte:

Code: Select all: +-------------+---------------+------------+ | 9 2456c56 | 2568 278 2567 | 3 458 1 | | 1 b456 8 | 9 3 a56 | 7 45 2 | | 3 25 7 | 258 1 4 | 58 9 6 | +-------------+---------------+------------+ | 28 1 9 | 258 278 2357 | 6 358 4 | | 28 7 d36 | 4 9 235-6| 258 1 38 | | 5 36 4 | 16 28 136 | 28 7 9 | +-------------+---------------+------------+ | 6 35 135 | 7 4 12 | 9 238 38 | | 7 9 13 | 12 6 8 | 4 23 5 | | 4 8 2 | 3 5 9 | 1 6 7 | +-------------+---------------+------------+

Code: Select all: +----------+--------------+------------+ | 9 46 5 | 268 278 267 | 3 48 1 | | 1 46 8 | 9 3 b56 | 7 a45 2 | | 3 2 7 |c58 1 4 | 58 9 6 | +----------+--------------+------------+ | 28 1 9 |d258 278 2357 | 6 3-58 4 | | 28 7 6 | 4 9 235 | 258 1 38 | | 5 3 4 | 16 28 16 | 28 7 9 | +----------+--------------+------------+ | 6 5 13 | 7 4 12 | 9 238 38 | | 7 9 13 | 12 6 8 | 4 23 5 | | 4 8 2 | 3 5 9 | 1 6 7 | +----------+--------------+------------+

R. Jamil

by **Cenoman** » Tue Jan 16, 2018 10:31 pm

...or, inspired by Leren's and rjamil's simple colouring, oddagons in 5s and 6s:

Code: Select all: +--------------------+----------------------+-------------------+ | 9 2456 b56 | 2568 278 a2567# | 3 a458# 1 | | 1 A45#-6 8 | 9 3 z56* | 7 45* 2 | | 3 25 7 | 258 1 4 | 58 9 6 | +--------------------+----------------------+-------------------+ | 28 1 9 | 258 278 y2357# | 6 358* 4 | | 28 7 36 | 4 9 2356* | 258* 1 38 | | 5 36 4 | 16 28 136 | 28 7 9 | +--------------------+----------------------+-------------------+ | 6 35 135 | 7 4 12 | 9 238 38 | | 7 9 13 | 12 6 8 | 4 23 5 | | 4 8 2 | 3 5 9 | 1 6 7 | +--------------------+----------------------+-------------------+

In 5's 5-link oddagon (*) with four guardians (#):
(5)r1c68 - (5=6)r1c3
(5)r2c2
(5)r4c6 - (5=6)r2c6
=> -6 r2c2; stte

Code: Select all: +--------------------+----------------------+-------------------+ | 9 a2456# 56 | 2568 278 A2567# | 3 b458 1 | | 1 456* 8 | 9 3 B56* | 7 c45 2 | | 3 25 7 | 258 1 4 | 8-5 9 6 | +--------------------+----------------------+-------------------+ | 28 1 9 | 258 278 2357 | 6 358 4 | | 28 7 36* | 4 9 C2356* | D258 1 38 | | 5 36* 4 | 16 28 A136# | 28 7 9 | +--------------------+----------------------+-------------------+ | 6 35 135 | 7 4 12 | 9 238 38 | | 7 9 13 | 12 6 8 | 4 23 5 | | 4 8 2 | 3 5 9 | 1 6 7 | +--------------------+----------------------+-------------------+

In 6's 5-link oddagon (*) with three guardians (#):
(6-4))r1c2 = r1c8 - (4=5)r2c8
(6)r16c6 - (6=5)r2c6 - r5c6 = (5)r5c7
=> -5 r3c7; stte

January 15, 2018