The New Sudoku Players' Forum

by **ArkieTech** » Sun Sep 29, 2019 10:53 am

Code: Select all: *-----------* |.8.|.7.|.5.| |.9.|6.4|.8.| |1..|...|..9| |---+---+---| |...|.9.|...| |.5.|7.3|.1.| |.29|.5.|34.| |---+---+---| |2..|9.7|..1| |7..|...|..8| |...|.1.|...| *-----------*

by **Cenoman** » Sun Sep 29, 2019 1:46 pm

Code: Select all: +-------------------+---------------------+--------------------+ | 4 8 h23 | 1 7 9 | 26 5 g236 | | 5 9 7 | 6 23 4 | 1 8 23 | | 1 36 236 | 235 238 258 | 4 7 9 | +-------------------+---------------------+--------------------+ | 3 7 1 | 4 9 d26 | 8 c26 5 | | 8 5 4 | 7 e26 3 | 9 1 f26 | | 6 2 9 | 8 5 1 | 3 4 7 | +-------------------+---------------------+--------------------+ | 2 4 3568 | 9 368 7 | 56 36 1 | | 7 1 i356 | j35-2 4 56-2 | a256 9 8 | | 9 36 3568 | 235 1 2568 | 7 b236 4 | +-------------------+---------------------+--------------------+

(2)r8c7 = r9c8 - r4c8 = (2*-6)r4c6 = r5c5 - r5c9 = (6-3)r1c9 = r1c3 - r8c3 = (3)r8c4 => -2 r8c4, r8c6*; ste

by **Sudtyro2** » Sun Sep 29, 2019 9:16 pm

Code: Select all: +----------------+--------------------+------------------+ | 4 8 g23 | 1 7 9 | 26 5 h23-6 | | 5 9 7 | 6 23 4 | 1 8 23 | | 1 36 236 | 235 238 d258# | 4 7 9 | +----------------+--------------------+------------------+ | 3 7 1 | 4 9 c26* | 8 b26* 5 | | 8 5 4 | 7 26 3 | 9 1 a26 | | 6 2 9 | 8 5 1 | 3 4 7 | +----------------+--------------------+------------------+ | 2 4 3568 | 9 368 7 | 56 36 1 | | 7 1 f356 | e235# 4 256* | 256* 9 8 | | 9 36 3568 | 235 1 d2568# | 7 236* 4 | +----------------+--------------------+------------------+

In 2s, a 5-link oddagon(*) with three guardians(#).
6r5c9 = (6-2)r4c8 = r4c6 - r39c6 == (2-3)r8c4 = r8c3 - r1c3 = 3r1c9 => -6 r1c9; stte.

SteveC

September 29, 2019