The New Sudoku Players' Forum

by **tarek** » Thu Jan 30, 2020 7:55 am

Code: Select all: +-------+-------+-------+ | . . 6 | . . . | 9 2 . | | 1 . . | . . 4 | . . 3 | | . 3 5 | . 1 . | . . 4 | +-------+-------+-------+ | . 8 . | 7 . 6 | . 3 . | | . . . | 8 . . | 1 . . | | . . . | . 2 3 | . . . | +-------+-------+-------+ | . 7 3 | . . . | 4 . 9 | | . . 9 | . . 2 | 8 . . | | . . . | . . . | . 1 . | +-------+-------+-------+ ..6...92.1....4..3.35.1...4.8.7.6.3....8..1......23....73...4.9..9..28.........1.

by **Leren** » Thu Jan 30, 2020 10:02 am

Code: Select all: *---------------------------------------------* | 78 4 6 | 35 357 578 | 9 2 1 | | 1 29 27-8| 69 679 4 | 5 a78 3 | | 789 3 5 | 2 1 789 |b67 678 4 | |----------------+---------------+------------| | 49 8 1 | 7 49 6 | 2 3 5 | | 3 26 27 | 8 459 59 | 1 49 67 | | 45679 569 d47 | 1 2 3 |c67 49 8 | |----------------+---------------+------------| | 2 7 3 | 56 8 1 | 4 56 9 | | 456 1 9 | 3456 356 2 | 8 567 67 | | 4568 56 d48 | 4569 5679 579 | 3 1 2 | *---------------------------------------------*

(8=7) r2c8 - r3c7 = r6c7 - (7=8) r69c3 => - 8 r2c3; stte

Leren

by **Cenoman** » Thu Jan 30, 2020 10:34 am

Code: Select all: +----------------------+----------------------+------------------+ | 78 4 6 | 35 357 578 | 9 2 1 | | 1 29 278* | 69 a679# 4 | 5 78* 3 | | 789 3 5 | 2 1 789 | 67* 678# 4 | +----------------------+----------------------+------------------+ | 49 8 1 | 7 49 6 | 2 3 5 | | 3 26 27# | 8 459 59 | 1 49 67 | | 45679# 569 4-7* | 1 2 3 | 67* 49 8 | +----------------------+----------------------+------------------+ | 2 7 3 | 56 8 1 | 4 56 9 | | 456 1 9 | 3456 356 2 | 8 567 67 | | 4568 56 48 | 4569 5679 579 | 3 1 2 | +----------------------+----------------------+------------------+

5-link oddagon (7)r26, c37, b3 with four guardians (#)
(7)r2c5 - (7=82)r2c38 - (2=7)r5c3
(7)r3c8 - r3c7 = (7)r6c7
(7)r5c3, r6c1
=> -7 r6c3; ste

by **Ngisa** » Thu Jan 30, 2020 1:04 pm

Code: Select all: +---------------------+---------------------+-----------------+ | 78 4 6 | 35 357 578 | 9 2 1 | | 1 29 b278 | 69 679 4 | 5 c78 3 | |f789 3 5 | 2 1 e789 | 67 d678 4 | +---------------------+---------------------+-----------------+ |g49 8 14 | 7 49 6 | 2 3 5 | | 3 269 27-4| 8 459 59 | 1 49 67 | | 45679 569 7-4 | 1 2 3 | 67 49 8 | +---------------------+---------------------+-----------------+ | 2 7 3 | 56 8 1 | 4 56 9 | | 56-4 1 9 | 3456 356 2 | 8 567 67 | | 4568 56 a48 | 4569 5679 579 |3 1 2 | +---------------------+---------------------+-----------------+

(4=8)r9c3 - r2c3 = r2c8 - r3c8 = (8-9)r3c6 = r3c1 - (9=4)r4c1 => - 4r8c1,r56c3; stte

Clement

by **Mauriès Robert** » Thu Jan 30, 2020 1:10 pm

Hi all,
Resolution with two conjugated tracks :
P(4r6c3) : 4r6c3->9r4c1->9r2c3
P(7r6c3) : (7r6c3->7r3c7)->7r2c5->6r2c4
=> -9r2c45, stte

Code: Select all: +----------------------+----------------------+------------------+ | 78 4 6 | 35 357 578 | 9 2 1 | | 1 2(9) 278 | [6]-9 6[7]-9 4 | 5 78 3 | | 789 3 5 | 2 1 789 | 6[7] 678 4 | +----------------------+----------------------+------------------+ | (4)9 8 1 | 7 49 6 | 2 3 5 | | 3 26 27 | 8 459 59 | 1 49 67 | | 45679 569 (4)[7] | 1 2 3 | 67 49 8 | +----------------------+----------------------+------------------+ | 2 7 3 | 56 8 1 | 4 56 9 | | 456 1 9 | 3456 356 2 | 8 567 67 | | 4568 56 48 | 4569 5679 579 | 3 1 2 | +----------------------+----------------------+------------------+

Robert

by **SteveG48** » Thu Jan 30, 2020 7:36 pm

Code: Select all: *--------------------------------------------------------------------* |b78 4 6 | 35 357 578 | 9 2 1 | | 1 b9-2 ab278 | 69 679 4 | 5 78 3 | |b789 3 5 | 2 1 789 | 67 678 4 | *----------------------+----------------------+----------------------| |c49 8 1 | 7 49 6 | 2 3 5 | | 3 bf26 7-2 | 8 459 59 | 1 49 f67 | | 45679 569 47 | 1 2 3 | 67 49 8 | *----------------------+----------------------+----------------------| | 2 7 3 | 56 8 1 | 4 56 9 | |d456 1 9 | 3456 356 2 | 8 567 e67 | | 4568 c56 48 | 4569 5679 579 | 3 1 2 | *--------------------------------------------------------------------*

2r2c3 = (789)b1p167&(26)r25c2 - (6|9=45)r4c1,r9c2 - (4|5=6)r8c1 - r8c9 = (62)r5c29 => -2 r2c2,r5c3 ; stte

Or:

Code: Select all: *--------------------------------------------------------------------* | 78 4 6 | 35 357 578 | 9 2 1 | | 1 d29 278 |d69 d679 4 | 5 8-7 3 | | 789 3 5 | 2 1 89-7 |a67 678 4 | *----------------------+----------------------+----------------------| | 49 8 1 | 7 49 6 | 2 3 5 | | 3 c26 27 | 8 459 59 | 1 49 c67 | | 45679 569 47 | 1 2 3 |b67 49 8 | *----------------------+----------------------+----------------------| | 2 7 3 | 56 8 1 | 4 56 9 | | 456 1 9 | 3456 356 2 | 8 567 67 | | 4568 56 48 | 4569 5679 579 | 3 1 2 | *--------------------------------------------------------------------*

7r3c7 = r6c7 - (7=62)r5c29 - (2=697)r2c245 => -7 r2c8,r3c6 ; stte

by **pjb** » Thu Jan 30, 2020 10:59 pm

Code: Select all: 78 4 6 | 35 357 578 | 9 2 1 1 29 e278 | 69 679 4 | 5 f78 3 789 3 5 | 2 1 789 |a67 678 4 ------------------------+----------------------+--------------------- 49 8 1 | 7 49 6 | 2 3 5 3 26 d27 | 8 459 59 | 1 49 c67 45679 569 47 | 1 2 3 |b67 49 8 ------------------------+----------------------+--------------------- 2 7 3 | 56 8 1 | 4 56 9 456 1 9 | 3456 356 2 | 8 567 67 4568 56 48 | 4569 5679 579 | 3 1 2

(7=6)r3c7 - r6c7 = (6-7)r5c9 = (7-2)r5c3 = (2-8)r2c3 = r2c8 => -7 r2c8; stte

Phil

PS Leren A typo I assume, but -8 r2c3

by **Leren** » Fri Jan 31, 2020 12:33 am

pjb wote : PS Leren A typo I assume, but -8 r2c3

Fixed Phil, thanks, Leren

January 30, 2020