The New Sudoku Players' Forum

by **tarek** » Tue Mar 17, 2020 12:05 am

Code: Select all: +-------+-------+-------+ | . . . | . 8 9 | . 1 . | | . . . | 3 . . | . . . | | . . . | 7 5 . | 2 . . | +-------+-------+-------+ | . 1 2 | . . . | . . . | | 8 . 7 | . 9 5 | 6 . 1 | | 3 . . | . 7 . | . 9 . | +-------+-------+-------+ | . . 9 | . 2 . | . . 6 | | 2 . . | . . 8 | . 5 . | | . . . | . 1 . | 4 . 9 | +-------+-------+-------+ ....89.1....3........75.2...12......8.7.956.13...7..9...9.2...62....8.5.....1.4.9

by **Leren** » Tue Mar 17, 2020 5:05 am

Code: Select all: *-----------------------------------------------* | 457-6 2 345-6 |a46 8 9 | 357 1 3457 | | 14567 5678 14568 | 3 46 2 | 9 467 4578 | |d46 9 38 | 7 5 1 | 2 46 38 | |-------------------+------------+--------------| | 9 1 2 | 8 36 36 | 57 47 457 | | 8 4 7 | 2 9 5 | 6 3 1 | | 3 56 56 | 1 7 4 | 8 9 2 | |-------------------+------------+--------------| |c14 357 9 |b45 2 37 | 137 8 6 | | 2 367 14 | 9 346 8 | 137 5 37 | | 567 35678 568 | 56 1 367 | 4 2 9 | *-----------------------------------------------*

W Wing : (6=4) r1c4 - r7c4 = r7c1 - (4=6) r3c1 => - 6 r1c13; stte

Leren

by **pjb** » Tue Mar 17, 2020 12:13 pm

Code: Select all: b4567 2 b3456 |c46 8 9 | 357 1 3457 14567 5678 14568 | 3 46 2 | 9 467 4578 a46 9 38 | 7 5 1 | 2 46 38 ------------------------+----------------------+--------------------- 9 1 2 | 8 36 36 | 57 47 457 8 4 7 | 2 9 5 | 6 3 1 3 56 56 | 1 7 4 | 8 9 2 ------------------------+----------------------+--------------------- 1-4 357 9 |d45 2 37 | 137 8 6 2 367 14 | 9 346 8 | 137 5 37 567 35678 568 | 56 1 367 | 4 2 9

(4=6)r3c1 - r13c1 = (6-4)r1c4 = r7c4 => -4 r7c1; stte

Phil

by **SteveG48** » Tue Mar 17, 2020 1:15 pm

Code: Select all: *--------------------------------------------------------------------* | 4567 2 3456 | 46 8 9 | 357 1 3457 | | 14567 5678 14568 | 3 4-6 2 | 9 a467 4578 | |c46 9 38 | 7 5 1 | 2 b46 38 | *----------------------+----------------------+----------------------| | 9 1 2 | 8 e36 36 | 57 47 457 | | 8 4 7 | 2 9 5 | 6 3 1 | | 3 56 56 | 1 7 4 | 8 9 2 | *----------------------+----------------------+----------------------| |c14 357 9 | 45 2 37 | 137 8 6 | | 2 367 d14 | 9 e346 8 | 137 5 37 | | 567 35678 568 | 56 1 367 | 4 2 9 | *--------------------------------------------------------------------*

6r2c8 = r3c8 - (6=41)r37c1 - (1=4)r8c3 - (4=36)r48c5 => -6 r2c5 ; stte

by **Cenoman** » Tue Mar 17, 2020 2:59 pm

Code: Select all: +--------------------------+-------------------+---------------------+ |da4567# 2 d3456* | e46* 8 9 | 357 1 a3457# | | 14567 5678 b14568# | 3 46 2 | 9 467 4578 | | c46 9 38 | 7 5 1 | 2 46 38 | +--------------------------+-------------------+---------------------+ | 9 1 2 | 8 36 36 | 57 47 457 | | 8 4 7 | 2 9 5 | 6 3 1 | | 3 56 56 | 1 7 4 | 8 9 2 | +--------------------------+-------------------+---------------------+ | 14 357 9 | 45* 2 37 | 137 8 6 | | 2 367 14* | 9 346* 8 | 137 5 37 | | 567 35678 568 | 56 1 367 | 4 2 9 | +--------------------------+-------------------+---------------------+

5-link oddagon (4)r18, c34, b8 having three guardians (#):
(4)r1c19 == (4)r2c3 - (4=6)r3c1 - r1c13 = (6)r1c4 => -4 r1c4; ste

March 16, 2020