The New Sudoku Players' Forum

by **ArkieTech** » Wed May 10, 2017 11:53 pm

Code: Select all: *-----------* |6..|9..|7..| |..1|..6|...| |8..|35.|...| |---+---+---| |95.|6..|..7| |...|...|...| |3..|..4|.28| |---+---+---| |...|.82|..4| |...|7..|1..| |..3|..9|..6| *-----------*

by **SteveG48** » Thu May 11, 2017 12:49 am

Code: Select all: *--------------------------------------------------------------------* | 6 a234 5-1 | 9 24 1 | 7 8 35 | | 2457 23479 1 | 8 24 6 | 239 349 359 | | 8 a249 ad49 | 3 5 7 | 269 469 1 | *----------------------+----------------------+----------------------| | 9 5 2 | 6 3 8 | 4 1 7 | |c14 148 d48 | 2 7 5 | 369 369 39 | | 3 67 67 | 1 9 4 | 5 2 8 | *----------------------+----------------------+----------------------| |c17 1679 67 | 5 8 2 | 39 379 4 | |c45 489 d4589 | 7 6 3 | 1 59 2 | | 257 b27 3 | 4 1 9 | 8 57 6 | *--------------------------------------------------------------------*

(4=239)b1p289 - (2=7)r9c2 - (7=145)r578c1 - (5=489)r358c3 => -4 r1c3 ; stte

by **eleven** » Thu May 11, 2017 5:51 am

Code: Select all: *-----------------------------------------------* | 6 #234 #45 | 9 24 1 | 7 8 @35 | | 57-24 37-249 1 | 8 24 6 | 239 349 359 | | 8 #249 #49 | 3 5 7 | 26-9 46-9 1 | |--------------------+---------+----------------| | 9 5 2 | 6 3 8 | 4 1 7 | | 14 148 48 | 2 7 5 | 369 369 39 | | 3 67 67 | 1 9 4 | 5 2 8 | |--------------------+---------+----------------| | 17 1679 67 | 5 8 2 | 39 379 4 | | 45 489 4589 | 7 6 3 | 1 59 2 | | 257 7-2 3 | 4 1 9 | 8 57 6 | *-----------------------------------------------*

Sue de Coq:
ALS 23459 in r13c23: not both 35 can be there because of 35r1c9, so the others must be true => -249r2c12, -2r9c2, -9r3c78; stte

by **JC Van Hay** » Thu May 11, 2017 6:50 am

Code: Select all: +------------------------+----------+---------------+ | 6 234 45 | 9 24 1 | 7 8 35 | | -45(27) 2349(7) 1 | 8 24 6 | 239 349 359 | | 8 249 49 | 3 5 7 | 269 469 1 | +------------------------+----------+---------------+ | 9 5 2 | 6 3 8 | 4 1 7 | | 14 148 48 | 2 7 5 | 369 369 39 | | 3 6-7 67 | 1 9 4 | 5 2 8 | +------------------------+----------+---------------+ | 17 169-7 67 | 5 8 2 | 39 379 4 | | 45 489 4589 | 7 6 3 | 1 59 2 | | 57(2) (27) 3 | 4 1 9 | 8 57 6 | +------------------------+----------+---------------+

M-Ring{(2)r29c1, (27)r9c2, (7)r2c21} -> -{(7)r67c2, (45)r2c1}; stte

by **bat999** » Thu May 11, 2017 10:39 am

Code: Select all: .---------------------.----------.-----------------. | 6 234 45 | 9 24 1 | 7 8 35 | | 2457 23479 1 | 8 24 6 | 239 349 359 | | 8 249 49 | 3 5 7 | 269 469 1 | :---------------------+----------+-----------------: | 9 5 2 | 6 3 8 | 4 1 7 | | a14 148 48 | 2 7 5 | 369 369 39 | | 3 67 67 | 1 9 4 | 5 2 8 | :---------------------+----------+-----------------: | a17 1679 67 | 5 8 2 | b39 b379 4 | | a45 489 489-5 | 7 6 3 | 1 b59 2 | | 257 27 3 | 4 1 9 | 8 57 6 | '---------------------'----------'-----------------'

(5=7)r578c1 - (7=5)r7c78,r8c8 => -5 r8c3; stte

by **Ngisa** » Thu May 11, 2017 1:26 pm

Code: Select all: +-----------------+--------+-------------+ | 6 234 45 | 9 24 1 | 7 8 35 | | 2457 23479 1 | 8 24 6 | 239 349 359 | | 8 249 49 | 3 5 7 | 269 469 1 | +-----------------+--------+-------------+ | 9 5 2 | 6 3 8 | 4 1 7 | | d14 148 48 | 2 7 5 | 369 369 39 | | 3 67 67 | 1 9 4 | 5 2 8 | +-----------------+--------+-------------+ | d17 1679 679 | 5 8 2 | 39 c379 4 | | d45 489 489-5 | 7 6 3 | 1 a59 2 | | 257 27 3 | 4 1 9 | 8 b57 6 | +-----------------+--------+-------------+

(5)r8c8 = (5-7) = r7c8 - (7=5)r578c1 => - 5 r8c3; stte

Clement

by **Cenoman** » Thu May 11, 2017 4:05 pm

Code: Select all: +------------------------+-----------------+--------------------+ | 6 234 d45 | 9 24 1 | 7 8 35 | | E247-5 D23479 1 | 8 24 6 | 239 a349* z359* | | 8 Bc249 Bc49 | 3 5 7 | 269 Bb469 1 | +------------------------+-----------------+--------------------+ | 9 5 2 | 6 3 8 | 4 1 7 | | 14 148 48 | 2 7 5 | 369 A369* 39* | | 3 67 67 | 1 9 4 | 5 2 8 | +------------------------+-----------------+--------------------+ | 17 1679 67 | 5 8 2 | 39 379 4 | | 45 489 4589 | 7 6 3 | 1 59 2 | | 257 C27 3 | 4 1 9 | 8 57 6 | +------------------------+-----------------+--------------------+

UR(39)r25c89 using internals => -5 r2c1; stte

Code: Select all: (4)r2c8 - r3c8 = r3c23 - (4=5)r1c3 - 5r2c1 (6)r5c8 - (6=2)r3c238 - (2=7)r9c2 - r2c2 = (7)r2c1 - 5r2c1 (5)r2c9 - 5r2c1

Cenoman

by **Sudtyro2** » Thu May 11, 2017 8:01 pm

Code: Select all: *------------------------------------------------------* | 6 b234 45 | 9 24 1 | 7 8 c35 | |e457-2 a23479 1 | 8 24 6 | 239 349 d359 | | 8 249 49 | 3 5 7 | 269 469 1 | |--------------------+------------+--------------------| | 9 5 2 | 6 3 8 | 4 1 7 | | 14 148 48 | 2 7 5 | 369 369 39 | | 3 *67 *67 | 1 9 4 | 5 2 8 | |--------------------+------------+--------------------| | 17 *67+19 *67 | 5 8 2 | 39 379 4 | | 45 489 4589 | 7 6 3 | 1 59 2 | | 257B 27A 3 | 4 1 9 | 8 57 6 | *------------------------------------------------------*

4-cell(*) ADP(67), using column externals:

Code: Select all: (7-3)r2c2 = r1c2 - (3=5)r1c9 - r2c9 = 5r2c1 - 2r2c1; (7-2)r9c2 = 2r9c1 - 2r2c1; stte

SteveC

by **ghfick** » Thu May 11, 2017 8:17 pm

This puzzle is a morph of the original 'Sue de Coq' puzzle:

http://forum.enjoysudoku.com/two-sector-disjoint-subsets-t2033.html

n: 123456789
n: 794651832

Best
Gordon

by **Leren** » Fri May 12, 2017 5:19 am

Well spotted Gordon ! Here is the Sue De Coq solution for this puzzle.

Code: Select all: *--------------------------------------------------------------------------------* | 6 a234 a45 | 9 24 1 | 7 8 b35 | | 57-24 37-249 1 | 8 24 6 | 239 349 359 | | 8 c249 c49 | 3 5 7 | 26-9 46-9 1 | |--------------------------+--------------------------+--------------------------| | 9 5 2 | 6 3 8 | 4 1 7 | | 14 148 48 | 2 7 5 | 369 369 39 | | 3 67 67 | 1 9 4 | 5 2 8 | |--------------------------+--------------------------+--------------------------| | 17 1679 67 | 5 8 2 | 39 379 4 | | 45 489 4589 | 7 6 3 | 1 59 2 | | 257 27 3 | 4 1 9 | 8 57 6 | *--------------------------------------------------------------------------------*

Sue de Coq: Base Cells r1c2 {234} r1c3 {45} Pincer Cells r1c9 {35} + r3c2 {249} r3c3 {49} => - 24 r2c1, - 249 r2c2, - 9 r3c78; stte

Leren

by **pjb** » Fri May 12, 2017 9:52 pm

Back from holidays

Code: Select all: 6 234 45 | 9 24 1 | 7 8 35 b27-45 c23479 1 | 8 24 6 | 239 349 359 8 249 49 | 3 5 7 | 269 469 1 ------------------------+----------------------+--------------------- 9 5 2 | 6 3 8 | 4 1 7 14 148 48 | 2 7 5 | 369 369 39 3 6-7 67 | 1 9 4 | 5 2 8 ------------------------+----------------------+--------------------- 17 169-7 67 | 5 8 2 | 39 379 4 45 489 4589 | 7 6 3 | 1 59 2 a257 d27 3 | 4 1 9 | 8 57 6

(2)r9c1 = (2-7)r2c1 = r2c2 - (7=2)r9c2 - r9c1 => r67c2<>7, r2c1<>45; stte
or
(2=4)r3c23 - (4=2)r1c239 => -2 r2c12, r9c2; stte

Phil

May 11, 2017