The New Sudoku Players' Forum

by **P.O.** » Mon Jan 02, 2023 7:08 pm

Code: Select all: 7 3 8 2 9 4 1 6 5 1 . 2 . . . . . 9 9 6 . . . . . . 3 3 . . . . 5 . . 6 4 . . . 7 . . . 8 2 . . . . . 9 . 1 8 . . . . . . . 4 6 . . . 5 . . . 7 5 7 1 8 4 3 6 9 2 7382941651.2.....996......33....5..64...7...82.....9.18.......46...5...7571843692 7 3 8 2 9 4 1 6 5 1 45 2 3567 368 678 478 478 9 9 6 45 157 18 178 2478 2478 3 3 189 79 149 128 5 247 247 6 4 159 569 1369 7 1269 235 235 8 2 58 567 346 368 68 9 3457 1 8 29 39 1679 126 12679 35 135 4 6 249 349 19 5 129 38 138 7 5 7 1 8 4 3 6 9 2

by **Leren** » Mon Jan 02, 2023 7:55 pm

Code: Select all: *----------------------------------------------* | 7 3 8 | 2 9 4 | 1 6 5 | | 1 45 2 | 3567 368 678 | 478 478 9 | | 9 6 45 | 57-1 18 178 | 2478 2478 3 | |-----------+--------------------+-------------| | 3 189 79 |b149 12-8 5 | 247 247 6 | | 4 159 569 |b1369 7 129-6 | 235 235 8 | | 2 5-8 567 |c346 c368 c68 | 9 3457 1 | |-----------+--------------------+-------------| | 8 29 39 |a67-19 126 12679 | 35 135 4 | | 6 249 349 | 19 5 129 | 38 138 7 | | 5 7 1 | 8 4 3 | 6 9 2 | *----------------------------------------------*

ALS XZ Rule Loop : ALS 1 r8c4; ALS 2 r4c4, r5c4, r6c456; Z = 1 & 9 => - 1 r3c4, - 8 r4c5, - 6 r5c6, - 8 r6c2, - 19 r7c4; stte

or Sue de Coq. Leren

by **jco** » Mon Jan 02, 2023 8:24 pm

Code: Select all: .--------------------------------------------------------------------. | 7 3 8 | 2 9 4 | 1 6 5 | | 1 B45 2 | 3567 368 678 | 478 478 9 | | 9 6 45 | 157 18 178 | 2478 2478 3 | |----------------------+----------------------+----------------------| | 3 C189 79 | 149 D128 5 | 247 247 6 | | 4 159 569 | 1369 7 1269 | 235 235 8 | | 2 B58 567 | 346 368 68 | 9 3457 1 | |----------------------+----------------------+----------------------| | 8 FB29 A3-9 | 1679 E126 12679 |A35 A135 4 | | 6 B249 34-9 |F19 5 F129 | 38 38-1 7 | | 5 7 1 | 8 4 3 | 6 9 2 | '--------------------------------------------------------------------'

1. (1=539)r7c378 - (9* = 2458)r2678c2 - (8)r4c2 = (8-2)r4c5 = (2)r7c5 - (2)r7c2|r8c6 = (9)r7c2&(91)r8c46

=> -1 r8c8, -9* r78c3; ste

by **Cenoman** » Mon Jan 02, 2023 9:47 pm

Code: Select all: +-------------------+-----------------------+---------------------+ | 7 3 8 | 2 9 4 | 1 6 5 | | 1 45* 2 | 35-67 368* 678* | 478* 478* 9 | 4678 | 9 6 45 | 157 18 178 | 2478 2478 3 | +-------------------+-----------------------+---------------------+ | 3 189 79 | 149 128 5 | 247 247 6 | | 4 19-5 569 | 139-6 7 129-6 | 235 235 8 | | 2 58* 57-6 | 34-6 368* 68* | 9 3457 1 | 6 8 +-------------------+-----------------------+---------------------+ | 8 29 39 | 1679 126 12679 | 35 135 4 | | 6 249 349 | 19 5 129 | 38 138 7 | | 5 7 1 | 8 4 3 | 6 9 2 | +-------------------+-----------------------+---------------------+ 5 3

MSLS 8 cells (*): r2c25678, r6c256; 8 links: 4678r2, 68r6, 5c2, 3c5
=> 7 eliminations: -67 r2c4, -5 r5c2, -6 r5c46, -6 r6c34; ste

by **SteveG48** » Tue Jan 03, 2023 2:41 pm

Code: Select all: *--------------------------------------------------------------------* | 7 3 8 | 2 9 4 | 1 6 5 | | 1 4-5 2 | 3567 368 678 | 478 478 9 | | 9 6 45 | 157 18 178 | 2478 2478 3 | *----------------------+----------------------+----------------------| | 3 d189 79 | 149 c128 5 | 247 247 6 | | 4 d159 69-5 | 1369 7 1269 | 235 235 8 | | 2 ad58 67-5 | 346 b368 b68 | 9 3457 1 | *----------------------+----------------------+----------------------| | 8 d29 39 | 1679 c126 12679 | 35 135 4 | | 6 249 349 | 19 5 129 | 38 138 7 | | 5 7 1 | 8 4 3 | 6 9 2 | *--------------------------------------------------------------------*

(5=8)r6c2 - r6c56 = (82)r47c5 - (2=1895)r4567c2 => -5 r2c2,r56c3 ; stte

by **P.O.** » Wed Jan 04, 2023 4:31 pm

thank you for your answers, my solution:

Code: Select all: 2r47c5 => r2c2 <> 5 r4c5=2 - r4n8{c5 c2} - r6c2{n8 n5} r7c5=2 - c2n2{r7 r8} - c2n4{r8 r2} ste.

Puzzle 83