The New Sudoku Players' Forum

Website · by **denis_berthier** » Wed Mar 01, 2023 9:18 am

.
An easy one (in mith's collection)

Code: Select all: +-------+-------+-------+ ! 1 . . ! 4 . 6 ! . 8 . ! ! 4 . . ! 1 8 . ! . . 6 ! ! . . . ! . 7 3 ! . 1 4 ! +-------+-------+-------+ ! . 4 5 ! . . 7 ! . . . ! ! 7 . 9 ! . 3 4 ! . . . ! ! 8 . . ! . . . ! 4 . 7 ! +-------+-------+-------+ ! . . . ! . 4 1 ! 6 7 . ! ! . . 1 ! 7 . 8 ! . 4 3 ! ! . 7 4 ! 3 6 . ! . . . ! +-------+-------+-------+ 1..4.6.8.4..18...6....73.14.45..7...7.9.34...8.....4.7....4167...17.8.43.7436....;118;2275 SER = 11.7

Code: Select all: Resolution state after Singles and whips[1]: +-------------------+-------------------+-------------------+ ! 1 2359 237 ! 4 259 6 ! 23579 8 259 ! ! 4 2359 237 ! 1 8 259 ! 23579 2359 6 ! ! 2569 25689 268 ! 259 7 3 ! 259 1 4 ! +-------------------+-------------------+-------------------+ ! 236 4 5 ! 2689 129 7 ! 12389 2369 1289 ! ! 7 126 9 ! 2568 3 4 ! 1258 256 1258 ! ! 8 1236 236 ! 2569 1259 259 ! 4 23569 7 ! +-------------------+-------------------+-------------------+ ! 2359 23589 238 ! 259 4 1 ! 6 7 259 ! ! 2569 2569 1 ! 7 259 8 ! 259 4 3 ! ! 259 7 4 ! 3 6 259 ! 12589 259 12589 ! +-------------------+-------------------+-------------------+ 170 candidates.

by **Cenoman** » Wed Mar 01, 2023 1:57 pm

Solved with TH pattern (including RT's), bivalue oddagon and UR

Code: Select all: +-----------------------+----------------------+-------------------------+ | 1 2359 237 | 4 B259* 6 | 23579 8 259* | | 4 2359 237 | 1 8 A259* | 23579 259+3* 6 | | 2569 25689 268 | C259* 7 3 | 259* 1 4 | +-----------------------+----------------------+-------------------------+ | 236 4 5 | 2689 129 7 | 12389 2369 1289 | | 7 126 9 | 2568 3 4 | 1258 256 1258 | | 8 1236 236 | 2569 1259 259 | 4 23569 7 | +-----------------------+----------------------+-------------------------+ | 2359 23589 238 | C259* 4 1 | 6 7 C259* | | 2569 2569 1 | 7 B259* 8 | B259* 4 3 | | 259 7 4 | 3 6 A259* | 18 A259* 18 | +-----------------------+----------------------+-------------------------+

1. TH(259)b2389 having a single guardian => +3 r2c8; lcls, 3 placements
Note RT's r29c6, r9c8 (A); r18c5, r8c4 (B); r37c4, r7c9 (C)

RT C is the most effective:

Code: Select all: +-----------------------+----------------------+-----------------------+ | 1 d2359 237 | 4 259 6 | 2579 8 259 | | 4 d259 27 | 1 8 259 | 2579 3 6 | | c2569 c25689 268 | b59+2 7 3 | 259 1 4 | +-----------------------+----------------------+-----------------------+ | 26 4 5 | 2689 129 7 | 3 269 1289 | | 7 126 9 | 2568 3 4 | 18 256 1258 | | 8 1236 236 | 2569 1259 259 | 4 2569 7 | +-----------------------+----------------------+-----------------------+ | 3 28-59 28 | a59-2 4 1 | 6 7 a59-2 | | 569-2 569-2 1 | 7 259 8 | 259 4 3 | | 59-2 7 4 | 3 6 259 | 18 259 18 | +-----------------------+----------------------+-----------------------+

2. From RT C:
(5)r7c49 == r3c4 - r3c12 = (5)r12c2 => -5 r7c2
(9)r7c49 == r3c4 - r3c12 = (9)r12c2 => -9 r7c2; NP(28)r7c23 => -2 r7c49, b7p457
3. From RT C: (59)r7c49 => +2 r3c4; lcls, 2 placements

Code: Select all: +---------------------+---------------------+----------------------+ | 1 2359 b237 | 4 59* 6 | 2579 8 259 | | 4 a259* b27 | 1 8 59* | 2579 3 6 | | 569 5689 68 | 2 7 3 | 59 1 4 | +---------------------+---------------------+----------------------+ | 2 4 5 | 689 19 7 | 3 69 189 | | 7 B16 9 | 568 3 4 | 18 256 1258 | | 8 Cd136 c36 | 569 Dd159-2 259 | 4 569 7 | +---------------------+---------------------+----------------------+ | 3 28 28 | 59 4 1 | 6 7 59 | | 569 A569* 1 | 7 z259* 8 | 259 4 3 | | 59 7 4 | 3 6 259 | 18 259 18 | +---------------------+---------------------+----------------------+

4. Bivalue oddagon (59)r28, c26, b2 having three guardians (2r2c2, 6r8c2, 2r8c5)
(2)r2c2 - (2=73)r12c3 - r6c3 = (31)r6c25
(6)r8c2 - (6=1)r5c2 - r6c2 = (1)r6c5
(2)r8c5
=> -2 r6c5; lcls; 4 placements

Code: Select all: +---------------------+-------------------+------------------+ | 1 23 27+3* | 4 59 6 | 27* 8 59 | | 4 59 27* | 1 8 59 | 27* 3 6 | | 569 5689 68 | 2 7 3 | 59 1 4 | +---------------------+-------------------+------------------+ | 2 4 5 | 689 19 7 | 3 69 18 | | 7 16 9 | 568 3 4 | 18 56 2 | | 8 136 36 | 569 159 2 | 4 569 7 | +---------------------+-------------------+------------------+ | 3 28 28 | 59 4 1 | 6 7 59 | | 569 569 1 | 7 2 8 | 59 4 3 | | 59 7 4 | 3 6 59 | 18 2 18 | +---------------------+-------------------+------------------+

5. UR(27)r12c37 using single internal => +3 r1c3; ste

by **totuan** » Wed Mar 01, 2023 5:19 pm

Code: Select all: *--------------------------------------------------------------------* | 1 2359 237 | 4 *259 6 | 23579 8 *259 | | 4 2359 237 | 1 8 *259 | 23579 *2359 6 | | 2569 25689 268 |*259 7 3 |*259 1 4 | |----------------------+----------------------+----------------------| | 236 4 5 | 2689 129 7 | 12389 2369 1289 | | 7 126 9 | 2568 3 4 | 1258 256 1258 | | 8 1236 236 | 2569 1259 259 | 4 23569 7 | |----------------------+----------------------+----------------------| | 2359 23589 238 |*259 4 1 | 6 7 *259 | | 2569 2569 1 | 7 *259 8 |*259 4 3 | | 259 7 4 | 3 6 *259 | 18 *259 18 | *--------------------------------------------------------------------*

My path for this one – don’t think it’s too easy

01: Tridagon (259) * marked cells => r2c8=3, some singles

Code: Select all: *--------------------------------------------------------------------* | 1 2359 a237 | 4 *259 6 | 2579 8 259 | | 4 *259 a27 | 1 8 *259A | 2579 3 6 | |*2569d 25689 e268 |*259 7 3 | 259 1 4 | |----------------------+----------------------+----------------------| | 26 4 5 | 2689 129 7 | 3 269 1289 | | 7 126 9 | 2568 3 4 | 18 256 1258 | | 8 1236 f26-3 | 2569 1259 259 | 4 2569 7 | |----------------------+----------------------+----------------------| | 3 *2589c b28 |*259 4 1 | 6 7 *259 | | 2569 2569 1 | 7 *259 8 |*259 4 3 | |*259 7 4 | 3 6 *259A | 18 *259A 18 | *--------------------------------------------------------------------*

Impossible pattern (259) * marked cells => (8)r7c2=(6)r3c1
02: (3=27)r12c3-(2=8)r7c3-(8)r7c2==(6)r3c1-r3c3=r6c3 => r6c3<>3, some singles

Code: Select all: *--------------------------------------------------------------------* | 1 259 3 | 4 *259 6 | 7 8 259 | | 4 *259 7 | 1 8 *259 | 259 3 6 | |*2569c 25689 268 |*259B 7 3 | 259 1 4 | |----------------------+----------------------+----------------------| | 26c 4 5 | 8 29 7 | 3 269 1 | | 7 1 9 | 256 3 4 | 8 256 25 | | 8 3 26 | 2569 1 259 | 4 2569 7 | |----------------------+----------------------+----------------------| | 3 *2589be 28ae |*59-2B 4 1 | 6 7 59-2B | | 2569d 2569 1 | 7 *259 8 |*259 4 3 | |*259d 7 4 | 3 6 *259 | 1 *25 8 | *--------------------------------------------------------------------*

Impossible pattern (259) * marked cells => (8)r7c2=(6)r3c1
03: (2=8)r7c3-(8)r7c2==(26)r34c1-(26=59)r89c1-(59=28)r7c23 => r7c49<>2
04: RT-B(259) => r3c4=2, stte

Impossible pattern (259) based on RT-A(259):

Hidden Text: Show

Code: Select all: *-----------------------------------------------------------* | . . . | . 259 . | . . . | | . 259 . | . . 259A | . . . | | 259 . . | 259 . . | . . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . 259 . | 259 . . | . . 259 | | . . . | . 259 . | 259 . . | |T259 . . | . . 259A | . 259A . | *-----------------------------------------------------------* T=(2|5|9) => impossible Prove: Let T=2 => r9c68<>2 => r2c6=2 by RT-A(259) => *-----------------------------------------------------------* | . . . | . 59 . | . . . | | . *59 . | . . 2 | . . . | |*59 . . |*59 . . | . . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . *59 . |*259 . . | . . 259 | | . . . | . 259 . | 259 . . | | 2 . . | . . 59 | . 59 . | *-----------------------------------------------------------* Oddagon(59) * marked cells => r7c4=2 => r8c7=2 => *-----------------------------------------------------------* | . . . | . *59 . | . . . | | . *59 . | . . 2 | . . . | |*59 . . |*59 . . | . . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . *59 . | 2 . . | . . *59 | | . . . | . *59 . | 2 . . | | 2 . . | . . *59 | . *59 . | *-----------------------------------------------------------* Oddagon (59) * marked cells => impossible, the same for T=(5|9)

Thanks for the puzzle!
totuan

by **Cenoman** » Thu Mar 02, 2023 11:16 pm

totuan wrote:Impossible pattern (259) based on RT-A(259):
Hidden Text: Show
Code: Select all
*-----------------------------------------------------------* | . . . | . 259 . | . . . | | . 259 . | . . 259A | . . . | | 259 . . | 259 . . | . . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . 259 . | 259 . . | . . 259 | | . . . | . 259 . | 259 . . | |T259 . . | . . 259A | . 259A . | *-----------------------------------------------------------*

Tricky and nice !
The same result

(8)r7c2=(6)r3c1

could be derived from the now well known Eleven#97 IP

Hidden Text: Show

Website · by **denis_berthier** » Fri Mar 03, 2023 6:02 am

.
Actually, I said it was easy because it uses a pattern that we have already seen in many of the puzzles I had chosen from mith's list: EL15c97 (ex 37).

Totuan, have you found in eleven's 13-cell list which pattern yours is? (I think eleven said his lists are complete for puzzles in two bands.

My solution, with no chain longer than 2:

hidden-pairs-in-a-row: r9{n1 n8}{c7 c9} ==> r9c9≠9, r9c9≠5, r9c9≠2, r9c7≠9, r9c7≠5, r9c7≠2

Code: Select all: +----------------------+----------------------+----------------------+ ! 1 2359 237 ! 4 259# 6 ! 23579 8 259# ! ! 4 2359 237 ! 1 8 259# ! 23579 2359#@ 6 ! ! 2569 25689 268 ! 259# 7 3 ! 259# 1 4 ! +----------------------+----------------------+----------------------+ ! 236 4 5 ! 2689 129 7 ! 12389 2369 1289 ! ! 7 126 9 ! 2568 3 4 ! 1258 256 1258 ! ! 8 1236 236 ! 2569 1259 259 ! 4 23569 7 ! +----------------------+----------------------+----------------------+ ! 2359 23589 238 ! 259# 4 1 ! 6 7 259# ! ! 2569 2569 1 ! 7 259# 8 ! 259# 4 3 ! ! 259 7 4 ! 3 6 259# ! 18 259# 18 ! +----------------------+----------------------+----------------------+

Code: Select all: tridagon for digits 2, 5 and 9 in blocks: b3, with cells (marked #): r2c8 (target cell, marked @), r3c7, r1c9 b2, with cells (marked #): r2c6, r3c4, r1c5 b9, with cells (marked #): r9c8, r8c7, r7c9 b8, with cells (marked #): r9c6, r8c5, r7c4 ==> r2c8≠2,5,9

singles ==> r2c8=3, r4c7=3, r7c1=3
hidden-pairs-in-a-column: c7{n1 n8}{r5 r9} ==> r5c7≠5, r5c7≠2

Code: Select all: EL15c97-OR2-relation for digits: 2, 5 and 9 in cells (marked #): (r1c9 r1c5 r2c2 r2c6 r3c1 r3c7 r3c4 r8c7 r8c5 r7c2 r7c9 r7c4 r9c1 r9c8 r9c6) with 2 guardians (in cells marked @) : n6r3c1 n8r7c2 +----------------------+----------------------+----------------------+ ! 1 2359 237 ! 4 259# 6 ! 2579 8 259# ! ! 4 259# 27 ! 1 8 259# ! 2579 3 6 ! ! 2569#@ 25689 268 ! 259# 7 3 ! 259# 1 4 ! +----------------------+----------------------+----------------------+ ! 26 4 5 ! 2689 129 7 ! 3 269 1289 ! ! 7 126 9 ! 2568 3 4 ! 18 256 1258 ! ! 8 1236 236 ! 2569 1259 259 ! 4 2569 7 ! +----------------------+----------------------+----------------------+ ! 3 2589#@ 28 ! 259# 4 1 ! 6 7 259# ! ! 2569 569 1 ! 7 259# 8 ! 259# 4 3 ! ! 259# 7 4 ! 3 6 259# ! 18 259# 18 ! +----------------------+----------------------+----------------------+

EL15c97-OR2-whip[2]: OR2{{n8r7c2 | n6r3c1}} - c1n9{r3 .} ==> r7c2≠9
EL15c97-OR2-whip[2]: OR2{{n8r7c2 | n6r3c1}} - c1n5{r3 .} ==> r7c2≠5
naked-pairs-in-a-block: b7{r7c2 r7c3}{n2 n8} ==> r9c1≠2, r8c1≠2
whip[1]: b7n2{r7c3 .} ==> r7c4≠2, r7c9≠2
finned-x-wing-in-columns: n2{c1 c4}{r3 r4} ==> r4c5≠2
t-whip[2]: r8n2{c5 c7} - b3n2{r3c7 .} ==> r1c5≠2
biv-chain[2]: b9n2{r9c8 r8c7} - c5n2{r8 r6} ==> r6c8≠2
EL15c97-OR2-whip[2]: OR2{{n6r3c1 | n8r7c2}} - r3n8{c2 .} ==> r3c3≠6
stte

by **totuan** » Fri Mar 03, 2023 10:44 am

denis_berthier wrote:Totuan, have you found in eleven's 13-cell list which pattern yours is? (I think eleven said his lists are complete for puzzles in two bands.

I don’t know, I did not check eleven’s list – by manual it’s very hard to check.
Based on RT, it’s not hard to creative more Impossible Patterns – for examples as below (don’t know they are on eleven’s list or not).
Example No.1 – 12 cells Impossible Pattern based on RT-A

Hidden Text: Show

Code: Select all: *-----------------------------------------------------------* | . . . | 259 . . | . . . | | . . . | . . T259A | . . . | | 259 . . | 259 . . | 259 . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . . . | 259 . . | . . 259 | | . . . | . 259 . | 259 . . | | 259 . . | . . 259A | . 259A . | *-----------------------------------------------------------* RT-A, T=(2|5|9) => impossible Prove: Let T=2 => r7c4=2, r9c1=2 (by RT-A) => r8c7=2 => no 2’s on R3 => impossible *-----------------------------------------------------------* | . . . | 59 . . | . . . | | . . . | . . 2 | . . . | | 59 . . | 59 . . | 59 . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . . . | 2 . . | . . 59 | | . . . | . 59 . | 2 . . | | 2 . . | . . 59 | . 59 . | *-----------------------------------------------------------*

Example No.2 – 12 cells Impossible Pattern based on RT-A

Hidden Text: Show

Code: Select all: *-----------------------------------------------------------* | 259 . . | . 259 . | . . 259 | | . . . | . . 259A | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | 259 . . | 259 . . | . . 259 | | . . . | . 259 . | 259 . . | |T259 . . | . . 259A | . 259A . | *-----------------------------------------------------------* RT-A, T=(2|5|9) => impossible Prove: Let T=2 => r2c6=2 (by RT) => r1c9=2 => r8c7=2 => r7c4=2 => Oddagon (59) * marked cells => impossible *-----------------------------------------------------------* |*59 . . | . *59 . | . . 2 | | . . . | . . 2 | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| |*59 . . | 2 . . | . . *59 | | . . . | . *59 . | 2 . . | | 2 . . | . . *59 | . *59 . | *-----------------------------------------------------------*

totuan

Website · by **denis_berthier** » Fri Mar 03, 2023 12:02 pm

totuan wrote:
denis_berthier wrote:Totuan, have you found in eleven's 13-cell list which pattern yours is? (I think eleven said his lists are complete for puzzles in two bands.

I don’t know, I did not check eleven’s list – by manual it’s very hard to check.
Based on RT, it’s not hard to creative more Impossible Patterns – for examples as below (don’t know they are on eleven’s list or not).
Example No.1 – 12 cells Impossible Pattern based on RT-A
Hidden Text: Show
Code: Select all
*-----------------------------------------------------------* | . . . | 259 . . | . . . | | . . . | . . T259A | . . . | | 259 . . | 259 . . | 259 . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . . . | 259 . . | . . 259 | | . . . | . 259 . | 259 . . | | 259 . . | . . 259A | . 259A . | *-----------------------------------------------------------* RT-A, T=(2|5|9) => impossible Prove: Let T=2 => r7c4=2, r9c1=2 (by RT-A) => r8c7=2 => no 2’s on R3 => impossible *-----------------------------------------------------------* | . . . | 59 . . | . . . | | . . . | . . 2 | . . . | | 59 . . | 59 . . | 59 . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . . . | 2 . . | . . 59 | | . . . | . 59 . | 2 . . | | 2 . . | . . 59 | . 59 . | *-----------------------------------------------------------*

Example No.2 – 12 cells Impossible Pattern based on RT-A
Hidden Text: Show
Code: Select all
*-----------------------------------------------------------* | 259 . . | . 259 . | . . 259 | | . . . | . . 259A | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | 259 . . | 259 . . | . . 259 | | . . . | . 259 . | 259 . . | |T259 . . | . . 259A | . 259A . | *-----------------------------------------------------------* RT-A, T=(2|5|9) => impossible Prove: Let T=2 => r2c6=2 (by RT) => r1c9=2 => r8c7=2 => r7c4=2 => Oddagon (59) * marked cells => impossible *-----------------------------------------------------------* |*59 . . | . *59 . | . . 2 | | . . . | . . 2 | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| |*59 . . | 2 . . | . . *59 | | . . . | . *59 . | 2 . . | | 2 . . | . . *59 | . *59 . | *-----------------------------------------------------------*

totuan

I think eleven said his list is complete in two bands. So, these patterns should also belong to it.
Currently, I don't have the means to compare isomorphic patterns and to check this. I will probably write a function to check morphs.

It'd also be interesting to have a complete list of patterns that can replace RT in all the cases it occurs after tridagon degenerates.
.

by **eleven** » Sat Mar 04, 2023 9:24 am

As Cenoman pointed out, totuans's patterns are impossible because of the remote triple derived from the tridagon. So you have to add the tridagon cells to get a stand-alone impossible pattern.
These are the complete impossible patterns:

Hidden Text: Show

Code: Select all: *-----------------------------------------------------------* | . . . | . 259 . | . . 259 | | . 259 . | . . 259 | . . . | | 259 . . | 259 . . | 259 . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . 259 . | 259 . . | . . 259 | | . . . | . 259 . | 259 . . | | 259 . . | . . 259 | . 259 . | *-----------------------------------------------------------* *-----------------------------------------------------------* | . . . | 259 259 . | . . 259 | | . . . | . . 259 | . . . | | 259 . . | 259 . . | 259 . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | . . . | 259 . . | . . 259 | | . . . | . 259 . | 259 . . | | 259 . . | . . 259 | . 259 . | *-----------------------------------------------------------* *-----------------------------------------------------------* | 259 . . | . 259 . | . . 259 | | . . . | . . 259 | . . . | | . . . | 259 . . | 259 . . | |-------------------+-------------------+-------------------| | . . . | . . . | . . . | | . . . | . . . | . . . | | . . . | . . . | . . . | |-------------------+-------------------+-------------------| | 259 . . | 259 . . | . . 259 | | . . . | . 259 . | 259 . . | | 259 . . | . . 259 | . 259 . | *-----------------------------------------------------------*

Website · by **denis_berthier** » Sat Mar 04, 2023 3:08 pm

.
Eleven, thanks
Which numbers are they in your lists?

[EDit]: are you sure about the 2nd? It has 4 cells in block 2.

by **eleven** » Sat Mar 04, 2023 10:07 pm

As Cenoman already noted, the first one (which we have in the puzzle) is nr 97 in the 15 cells list.
You are of course right, that we cannot have 4 cells (with 3 digits) in a box. So the problem with the second one is, that the remote triple cannot come from a tridagon.
The third one is the first in the 14 cells list.

Website · by **denis_berthier** » Sun Mar 05, 2023 4:51 am

.
Yes, #97 in 15 cells appears quite frequently after the simplest tridagon elimination.

I can find the 3rd pattern as #1 in 14 cells in your older list (380 patterns); but I can't find it in your more recent one with 630 patterns. Did you change the standardised form?

by **eleven** » Sun Mar 05, 2023 12:40 pm

Hm, no, it's also the first in the all14.txt file of the 630 patterns in the zipped file here.
[Added:]something did not work anymore with the link to the grid patterns, hopefully this one does again:
3digit6boxesAsPatterns.zip.
In pats14.txt the first one is

Code: Select all: ############################## . . . | . . . | . . X . . . | . . X | . X . . . X | . X . | X . . ------------------------------ . . . | . . X | X . . . . X | . X . | . X . . . X | X . . | . . X ##############################

Website · by **denis_berthier** » Sun Mar 05, 2023 3:39 pm

ah yes; sorry; I was looking for it in the wrong file.

The New Sudoku Players' Forum

#392 in 158,276 T&E(3) min-expands

#392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands

Re: #392 in 158,276 T&E(3) min-expands