The New Sudoku Players' Forum

by **jco** » Mon Dec 23, 2024 9:50 pm

1...5..8...2..6..9.3.4..7..4......1...5.....3.6.......7..3..4....8..2..5.9..1..6.
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funny puzzle

Indeed!

After HP(25)b7

Code: Select all: ,--------------------------------------------------------------------------------------, | 1 (47) (47)(69) | 279 5 379 | 236 8 246 | | 58 58-47 2 | 178 378 6 | 135 345 9 | | 5689 3 (69) | 4 289 189 | 7 25 126 | |----------------------------+----------------------------+----------------------------| | 4 278 379 | 256789 236789 35789 | 25689 1 2678 | | 289 1278 5 | 126789 246789 14789 | 2689 2479 3 | | 2389 6 1379 | 125789 234789 1345789 | 2589 24579 2478 | |----------------------------+----------------------------+----------------------------| | 7 25 (16) | 3 689 589 | 4 29 128 | | 36 (14) 8 | 679 4679 2 | 139 379 5 | | 25 9 34 | 578 1 4578 | 238 6 278 | '--------------------------------------------------------------------------------------'

(47)r1c23 = (691)r137c3 - (1=47)r18c2 => -47 r2c2; ste

Thanks for the puzzle!

Happy Holidays!

by **Mauriès Robert** » Tue Dec 24, 2024 10:15 am

Hello and Happy Christmas!
Here is a solution based on the 4r2c8 backdoor.
(-4r8c2)->1r8c2->6r7c3->9r3c3->47r1c23->... => -4r2c2 => r2c8=4, end

puzzle: Show

Or otherwise from the pair 14r8c2
(1r8c2)->6r7c3->9r3c3->47r1c23->4r2c8
(4r8c2)->4r2c8
so r2c8=4
Robert

by **Leren** » Tue Dec 24, 2024 7:29 pm

Code: Select all: *--------------------------------------------------------------* | 1 b47 b4679 | 279 5 379 | 236 8 246 | | 58 578-4 2 | 178 378 6 | 135 345 9 | | 5689 3 b69 | 4 289 189 | 7 25 126 | |-------------------+-----------------------+------------------| | 4 278 379 | 256789 236789 35789 | 25689 1 2678 | | 289 1278 5 | 126789 246789 14789 | 2689 2479 3 | | 2389 6 1379 | 125789 234789 1345789 | 2589 24579 2478 | |-------------------+-----------------------+------------------| | 7 25 a16 | 3 689 589 | 4 29 128 | | 36 a14 8 | 679 4679 2 | 139 379 5 | | 25 9 34 | 578 1 4578 | 238 6 278 | *--------------------------------------------------------------*

(4=6) r7c3, r8c2 - (6=4) r1c23, r3c3 => - 4 r2c2; stte

Merry XMAS !

Leren

by **SteveG48** » Wed Dec 25, 2024 7:26 pm

Code: Select all: *--------------------------------------------------------------------------------------* | 1 bc47 bc4679 | 279 5 379 |d236 8 d246 | | 58 4578 2 | 178 378 6 | 135 345 9 | | 5689 3 bc69 | 4 289 189 | 7 25 d126 | *----------------------------+----------------------------+----------------------------| | 4 278 379 | 256789 236789 35789 | 25689 1 2678 | | 289 1278 5 | 126789 246789 14789 | 2689 2479 3 | | 2389 6 1379 | 125789 234789 1345789 | 2589 24579 2478 | *----------------------------+----------------------------+----------------------------| | 7 25 a16 | 3 689 589 | 4 29 28-1 | |a36 14 8 | 679 4679 2 |b139 b379 5 | | 25 9 34 | 578 1 4578 |c238 6 278 | *--------------------------------------------------------------------------------------*

(1=63)b7p34 - 6b1p239|3r8c78 = (34)b1p239,r9c7 - (3|4=261)b3p139 => -1 r7c9 ; ste

by **Cenoman** » Wed Dec 25, 2024 8:23 pm

Code: Select all: +-----------------------+------------------------------+-------------------------+ | 1 47 4679 | 279 5 379 | 236 8 246 | | d58 d4578 2 | 178 378 6 | 135 c345 9 | | d589-6 3 69 | 4 289 189 | 7 25 126 | +-----------------------+------------------------------+-------------------------+ | 4 278 379 | 256789 236789 35789 | 25689 1 2678 | | 289 1278 5 | 126789 246789 14789 | 2689 2479 3 | | 2389 6 1379 | 125789 234789 1345789 | 2589 24579 2478 | +-----------------------+------------------------------+-------------------------+ | 7 25 16 | 3 689 589 | 4 29 128 | | a36 14 8 | 679 4679 2 | 139 b379 5 | | 25 9 34 | 578 1 4578 | 238 6 278 | +-----------------------+------------------------------+-------------------------+

(6=3)r8c1 - r8c8 = (3-4)r2c8 = (458)b1p457 => -6 r3c1; ste

Season Greetings !

funny puzzle