The New Sudoku Players' Forum

by **ArkieTech** » Mon Sep 25, 2017 11:21 pm

Code: Select all: *-----------* |...|7..|.86| |.1.|9..|43.| |62.|4..|1..| |---+---+---| |...|..8|.4.| |...|.3.|...| |.7.|2..|...| |---+---+---| |..1|..4|.73| |.47|..2|.6.| |83.|..6|...| *-----------*

by **SteveG48** » Mon Sep 25, 2017 11:44 pm

Code: Select all: *-----------------------------------------------------------* | 34 c59 34 | 7 2 1 |b59 8 6 | | 7 1 8 | 9 6 5 | 4 3 2 | | 6 2 59 | 4 8 3 | 1 59 7 | *-------------------+-------------------+-------------------| | 23 d59 23 | 6 e15 8 | 7 4 159 | | 1459 8 459 | 15 3 7 | 6 2 159 | | 15 7 6 | 2 4 9 | 3 15 8 | *-------------------+-------------------+-------------------| | 259 6 1 | 8 59 4 |a259 7 3 | |f59 4 7 | 3 f159 2 | 8 6 1-5 | | 8 3 259 | 15 7 6 |a259 159 4 | *-----------------------------------------------------------*

5r79c7 = r1c7 - r1c2 = r4c2 - (5=1)r4c5 - (1=59)r8c15 => -5 r8c9 ; stte

by **Leren** » Tue Sep 26, 2017 12:18 am

Code: Select all: *-------------------------------------------* | 34 59 34 | 7 2 1 | 59 8 6 | | 7 1 8 | 9 6 5 | 4 3 2 | | 6 2 59 | 4 8 3 | 1 59 7 | |--------------+-----------+----------------| | 23 9-5 23 | 6 a15 8 | 7 4 159 | | 1459 8 459 |b15 3 7 | 6 2 9-15 | |b15 7 6 | 2 4 9 | 3 a15 8 | |--------------+-----------+----------------| | 259 6 1 | 8 59 4 | 259 7 3 | | 9-5 4 7 | 3 159 2 | 8 6 a15 | | 8 3 259 |a15 7 6 | 259 159 4 | *-------------------------------------------*

Remote Pairs {15} Cells r4c5 r6c8 r8c9 r9c4 + ve parity (a) / r5c4 r6c1 - ve parity (b) => - 5 r4c2, - 15 r5c9; - 5 r8c1; stte

Leren

by **Marty R.** » Tue Sep 26, 2017 1:54 am

Code: Select all: +-------------+----------+-------------+ | 34 59 34 | 7 2 1 | 59 8 6 | | 7 1 8 | 9 6 5 | 4 3 2 | | 6 2 59 | 4 8 3 | 1 59 7 | +-------------+----------+-------------+ | 23 59 23 | 6 15 8 | 7 4 159 | | 1459 8 459 | 15 3 7 | 6 2 159 | | 15 7 6 | 2 4 9 | 3 15 8 | +-------------+----------+-------------+ | 259 6 1 | 8 59 4 | 259 7 3 | | 59 4 7 | 3 159 2 | 8 6 15 | | 8 3 259 | 15 7 6 | 259 159 4 | +-------------+----------+-------------+

Play this puzzle online at the Daily Sudoku site

Skyscraper (5) r36
5r6c1=5r3c3-r1c2=r4c2-(5=1)r4c5-r8c5=r9c4-r9c8=r6c8-(1=5)r6c1=> 5r6c1

by **JC Van Hay** » Tue Sep 26, 2017 8:07 am

The solutions of {5C159B5} remove 5r4c2; stte

Code: Select all: +------------------+----------------+-----------------+ | 34 59 34 | 7 2 1 | 59 8 6 | | 7 1 8 | 9 6 5 | 4 3 2 | | 6 2 59 | 4 8 3 | 1 59 7 | +------------------+----------------+-----------------+ | 23 9-5 23 | 6 1(5) 8 | 7 4 19(5) | | 149(5) 8 459 | 1(5) 3 7 | 6 2 19(5) | | 1(5) 7 6 | 2 4 9 | 3 15 8 | +------------------+----------------+-----------------+ | 29(5) 6 1 | 8 9(5) 4 | 259 7 3 | | 9(5) 4 7 | 3 19(5) 2 | 8 6 1(5) | | 8 3 259 | 15 7 6 | 259 159 4 | +------------------+----------------+-----------------+ r4c5 r5c4 r4c9 r5c9 r8c9 r4c5 r8c5 r7c5 r8c1 r7c1 r56c1

or
X-Wing[r4c5=r5c4-r5c9=*r4c9]=*r8c9-r8c15=*X-Wing[r4c5=*r7c5-r7c1=*r56c1] -> r4c59==r56c1 => -r4c2

by **Sudtyro2** » Tue Sep 26, 2017 4:59 pm

Code: Select all: *------------------------------------------------------* | 34 59 34 | 7 2 1 | 59 8 6 | | 7 1 8 | 9 6 5 | 4 3 2 | | 6 2 59 | 4 8 3 | 1 59 7 | |------------------+----------------+------------------| | 23 59 23 | 6 15 8 | 7 4 19+5 | | 14+59 8 49+5 | 15 3 7 | 6 2 59+1 | | 15 7 6 | 2 4 9 | 3 15 8 | |------------------+----------------+------------------| | 29+5 6 1 | 8 59 4 | 25+9 7 3 | | 59 4 7 | 3 19+5 2 | 8 6 1-5 | | 8 3 25+9 | 15 7 6 | 29+5 19+5 4 | *------------------------------------------------------*

This should make one groan...
BUG+10 => - 5r8c9; stte

Code: Select all: 5r7c1 - r6c1 = r6c8 - r3c8 = r1c7 - r1c2 = r4c2 - (5=1)r4c5 - r8c5 = 1r8c9 - 5r8c9; 5r5c13 - r4c2 = r1c2 - r1c7 = r3c8 - r6c8 = 5r45c9 - 5r8c9; 5r4c9,r9c78,r8c5 - 5r8c9; 1r5c9 - r5c4 = r9c4 - r9c8 = 1r8c9 - 5r8c9; 9r7c7 - (9=51)b8p27 - r9c8 = 1r8c9 - 5r8c9; 9r9c3,r5c1 - (9=5)r8c1 - 5r8c9;

SteveC

September 26, 2017