The New Sudoku Players' Forum

by **tarek** » Sat Feb 29, 2020 8:03 pm

Code: Select all: +-------+-------+-------+ | 3 . . | 7 . . | 6 . . | | . . 9 | . 4 . | . 8 . | | . . . | . 1 6 | . . 5 | +-------+-------+-------+ | . . 1 | . . . | . 3 7 | | . 3 8 | . . . | . . . | | . . 2 | . . . | . 6 9 | +-------+-------+-------+ | . . . | . 8 7 | . . 6 | | . . 3 | . 5 . | . 2 . | | 2 . . | 1 . . | 5 . . | +-------+-------+-------+ 3..7..6....9.4..8.....16..5..1....37.38........2....69....87..6..3.5..2.2..1..5..

by **Leren** » Sat Feb 29, 2020 8:18 pm

Code: Select all: *----------------------------------------* | 3 245 45 | 7 9 8 | 6 14 14-2 | | 16 16 9 | 5 4 2 | 7 8 3 | | 48 d248 7 | 3 1 6 |e249 49 5 | |---------------+--------+---------------| | 69 69 1 | 4 2 5 | 8 3 7 | | 7 3 8 | 9 6 1 | 4-2 5 a24 | | 45 45 2 | 8 7 3 | 1 6 9 | |---------------+--------+---------------| | 1459 1459 45 | 2 8 7 | 3 149 6 | | 18 7 3 | 6 5 49 | 49 2 18 | | 2 c489 6 | 1 3 49 | 5 7 b48 | *----------------------------------------*

(2=4) r5c9 - (4=8) r9c9 - r9c2 = (8-2) r3c2 = (2) r3c7 => - 2 r1c9, r5c7; stte

Leren

by **SteveG48** » Sat Feb 29, 2020 8:57 pm

Code: Select all: *-----------------------------------------------------------* | 3 245 e45 | 7 9 8 | 6 14 124 | | 16 16 9 | 5 4 2 | 7 8 3 | |b8-4 a248 7 | 3 1 6 |a249 ab49 5 | *-------------------+-------------------+-------------------| | 69 69 1 | 4 2 5 | 8 3 7 | | 7 3 8 | 9 6 1 | 24 5 24 | | 45 45 2 | 8 7 3 | 1 6 9 | *-------------------+-------------------+-------------------| | 1459 1459 d45 | 2 8 7 | 3 c149 6 | |b18 7 3 | 6 5 49 | 49 2 c18 | | 2 489 6 | 1 3 49 | 5 7 48 | *-----------------------------------------------------------*

4r3c278 = (489)r3c18,r8c1 - (8|9=14)b9p26 - 4r7c3 = 4r1c3 => -4 r3c1 ; stte

by **Cenoman** » Sat Feb 29, 2020 9:46 pm

Code: Select all: +---------------------+-----------------+--------------------+ | 3 245 45 | 7 9 8 | 6 14 124 | | 16* 16* 9 | 5 4 2 | 7 8 3 | | e8-4 248 7 | 3 1 6 | 249 a49 5 | +---------------------+-----------------+--------------------+ | 69* 69* 1 | 4 2 5 | 8 3 7 | | 7 3 8 | 9 6 1 | 24 5 24 | | 45 45 2 | 8 7 3 | 1 6 9 | +---------------------+-----------------+--------------------+ | 1459* 1459* 45 | 2 8 7 | 3 b149 6 | | d18 7 3 | 6 5 49 | 49 2 c18 | | 2 489 6 | 1 3 49 | 5 7 48 | +---------------------+-----------------+--------------------+

DP(169)r247 using externals (1r7c8==9r7c8)
(4=9)r3c8 - (9==1)r7c8 - (1=8)r8c9 - r8c1 = (8)r3c1 => -4 r3c1; ste

by **pjb** » Sat Feb 29, 2020 10:12 pm

Code: Select all: 3 25-4 5-4 | 7 9 8 | 6 a14 b124 16 16 9 | 5 4 2 | 7 8 3 e48 248 7 | 3 1 6 | 29-4 9-4 5 ------------------------+----------------------+--------------------- 69 69 1 | 4 2 5 | 8 3 7 7 3 8 | 9 6 1 | 24 5 24 45 45 2 | 8 7 3 | 1 6 9 ------------------------+----------------------+--------------------- 1459 1459 45 | 2 8 7 | 3 149 6 d18 7 3 | 6 5 49 | 49 2 c18 2 489 6 | 1 3 49 | 5 7 48

(4=1)r1c8 - r1c9 = r8c9 - (1=8)r8c1 - (8=4)r3c1 => -4 r1c23, r3c78; stte

Phil

by **Mauriès Robert** » Sat Feb 29, 2020 10:30 pm

Hi all,
My resolution with an anti-track
P'(2r1c2) : -2r1c2->45r1c23->8r3c1->8r9c2->4r9c9->2r5c9->2r3c7 => -2r3c2, stte

Code: Select all: +--------------+--------+-------------+ | 3 (-2)45 45 | 7 9 8 | 6 14 124 | | 16 16 9 | 5 4 2 | 7 8 3 | | 48* 248 7 | 3 1 6 | 2*49 49 5 | +--------------+--------+-------------+ | 69 69 1 | 4 2 5 | 8 3 7 | | 7 3 8 | 9 6 1 | 24 5 2*4 | | 45 45 2 | 8 7 3 | 1 6 9 | +--------------+--------+-------------+ | 1459 1459 45 | 2 8 7 | 3 149 6 | | 18 7 3 | 6 5 49 | 49 2 18 | | 2 48*9 6 | 1 3 49 | 5 7 4*8 | +--------------+--------+-------------+

Robert

by **Ngisa** » Sun Mar 01, 2020 4:52 pm

Code: Select all: +------------------------+----------------+---------------------+ | 3 245 j45 | 7 9 8 | 6 14 124 | | 16 16 9 | 5 4 2 | 7 8 3 | | k48 e248 7 | 3 1 6 |f249 49 5 | +------------------------+----------------+---------------------+ | 69 69 1 | 4 2 5 | 8 3 7 | | 7 3 8 | 9 6 1 | 24 5 24 | | 45 45 2 | 8 7 3 | 1 6 9 | +------------------------+----------------+---------------------+ | 1459 1459 i45 | 2 8 7 | 3 h149 6 | |la1-8 7 3 | 6 5 49 |g49* 2 b1*8| | 2 d489 6 | 1 3 49 | 5 7 c48 | +------------------------+----------------+---------------------+

(1)r8c1 = (1*-8)r8c9 = r9c9 - r9c2 = (8-2)r3c2 = (2-9)r3c7 = (9*)r8c7 - (1*9*=4)r7c8 - r7c3 = r1c3 - (4=8)r3c1 - (8=1)r8c1 => - 8r8c1; stte

Clement

February 29, 2020