9x9 Project: Building Math Identity One Digit at a Time
@9x9.bsky.social
Project aimed at using variant sudoku as a vehicle to keep kids excited about math while fostering mathematical reasoning and communication skills.
Follow for daily puzzles, project updates, and more!
Follow for daily puzzles, project updates, and more!
Check out this puzzle by @fdmafc.bsky.social !
Fireworks - variant sudoku using entropic lines, kropki pairs, modular lines, thermometers, whisper-4 and 5.
🔗: sudokupad.app/v1wnf91ixz
Fireworks - variant sudoku using entropic lines, kropki pairs, modular lines, thermometers, whisper-4 and 5.
🔗: sudokupad.app/v1wnf91ixz
November 5, 2025 at 5:37 PM
Check out this puzzle by @fdmafc.bsky.social !
Fireworks - variant sudoku using entropic lines, kropki pairs, modular lines, thermometers, whisper-4 and 5.
🔗: sudokupad.app/v1wnf91ixz
Fireworks - variant sudoku using entropic lines, kropki pairs, modular lines, thermometers, whisper-4 and 5.
🔗: sudokupad.app/v1wnf91ixz
Check out this puzzle by @fdmafc.bsky.social !
Firing Wildly - variant sudoku using Arrows and Quadruples.
🔗: sudokupad.app/7i10ret7j6
Firing Wildly - variant sudoku using Arrows and Quadruples.
🔗: sudokupad.app/7i10ret7j6
October 9, 2025 at 8:57 PM
Check out this puzzle by @fdmafc.bsky.social !
Firing Wildly - variant sudoku using Arrows and Quadruples.
🔗: sudokupad.app/7i10ret7j6
Firing Wildly - variant sudoku using Arrows and Quadruples.
🔗: sudokupad.app/7i10ret7j6
Check out this puzzle by @fdmafc.bsky.social !
Unknown Doubles - variant sudoku using X-Sums and Ratio dots.
🔗: sudokupad.app/39noaaesuy
Unknown Doubles - variant sudoku using X-Sums and Ratio dots.
🔗: sudokupad.app/39noaaesuy
October 8, 2025 at 4:53 PM
Check out this puzzle by @fdmafc.bsky.social !
Unknown Doubles - variant sudoku using X-Sums and Ratio dots.
🔗: sudokupad.app/39noaaesuy
Unknown Doubles - variant sudoku using X-Sums and Ratio dots.
🔗: sudokupad.app/39noaaesuy
Check out this puzzle by @fdmafc.bsky.social !
Flag - variant sudoku using whisper-5.
🔗: sudokupad.app/yw6ll0pr8v
Flag - variant sudoku using whisper-5.
🔗: sudokupad.app/yw6ll0pr8v
September 30, 2025 at 10:04 PM
Check out this puzzle by @fdmafc.bsky.social !
Flag - variant sudoku using whisper-5.
🔗: sudokupad.app/yw6ll0pr8v
Flag - variant sudoku using whisper-5.
🔗: sudokupad.app/yw6ll0pr8v
Check out this puzzle by @fdmafc.bsky.social !
Input Output - variant sudoku using XV pairs and palindromes.
🔗: sudokupad.app/xxgjlxv33o
Input Output - variant sudoku using XV pairs and palindromes.
🔗: sudokupad.app/xxgjlxv33o
September 24, 2025 at 4:31 PM
Check out this puzzle by @fdmafc.bsky.social !
Input Output - variant sudoku using XV pairs and palindromes.
🔗: sudokupad.app/xxgjlxv33o
Input Output - variant sudoku using XV pairs and palindromes.
🔗: sudokupad.app/xxgjlxv33o
Check out this puzzle by @fdmafc.bsky.social !
Dot's Crazy! - variant sudoku using kropki pairs.
🔗: sudokupad.app/n6hva2svjo
Dot's Crazy! - variant sudoku using kropki pairs.
🔗: sudokupad.app/n6hva2svjo
September 23, 2025 at 1:32 AM
Check out this puzzle by @fdmafc.bsky.social !
Dot's Crazy! - variant sudoku using kropki pairs.
🔗: sudokupad.app/n6hva2svjo
Dot's Crazy! - variant sudoku using kropki pairs.
🔗: sudokupad.app/n6hva2svjo
Check out this puzzle by @fdmafc.bsky.social !
Ratiarrows - variant sudoku using arrows and ratio dots.
🔗: sudokupad.app/dft05ey02d
Ratiarrows - variant sudoku using arrows and ratio dots.
🔗: sudokupad.app/dft05ey02d
September 17, 2025 at 2:55 AM
Check out this puzzle by @fdmafc.bsky.social !
Ratiarrows - variant sudoku using arrows and ratio dots.
🔗: sudokupad.app/dft05ey02d
Ratiarrows - variant sudoku using arrows and ratio dots.
🔗: sudokupad.app/dft05ey02d
Check out this puzzle by @fdmafc.bsky.social !
Romans In and Out of Cages - variant sudoku using XV pairs and cages.
🔗: sudokupad.app/fw9mrlhldu
Romans In and Out of Cages - variant sudoku using XV pairs and cages.
🔗: sudokupad.app/fw9mrlhldu
September 15, 2025 at 5:38 PM
Check out this puzzle by @fdmafc.bsky.social !
Romans In and Out of Cages - variant sudoku using XV pairs and cages.
🔗: sudokupad.app/fw9mrlhldu
Romans In and Out of Cages - variant sudoku using XV pairs and cages.
🔗: sudokupad.app/fw9mrlhldu
Check out this puzzle by @fdmafc.bsky.social !
Speed Bumps - variant sudoku using X-sums and quadruples.
🔗: sudokupad.app/f6fvrnvkar
Speed Bumps - variant sudoku using X-sums and quadruples.
🔗: sudokupad.app/f6fvrnvkar
September 12, 2025 at 6:20 PM
Check out this puzzle by @fdmafc.bsky.social !
Speed Bumps - variant sudoku using X-sums and quadruples.
🔗: sudokupad.app/f6fvrnvkar
Speed Bumps - variant sudoku using X-sums and quadruples.
🔗: sudokupad.app/f6fvrnvkar
Check out this puzzle by @fdmafc.bsky.social !
Five to Twelve - variant sudoku using XV pairs and cages.
🔗: sudokupad.app/d93d20aq05
Five to Twelve - variant sudoku using XV pairs and cages.
🔗: sudokupad.app/d93d20aq05
September 11, 2025 at 3:49 PM
Check out this puzzle by @fdmafc.bsky.social !
Five to Twelve - variant sudoku using XV pairs and cages.
🔗: sudokupad.app/d93d20aq05
Five to Twelve - variant sudoku using XV pairs and cages.
🔗: sudokupad.app/d93d20aq05
Check out this puzzle by @fdmafc.bsky.social !
Marked Trail - variant sudoku using XV pairs and arrows.
🔗: sudokupad.app/r0jvreajqj
Marked Trail - variant sudoku using XV pairs and arrows.
🔗: sudokupad.app/r0jvreajqj
September 9, 2025 at 5:36 PM
Check out this puzzle by @fdmafc.bsky.social !
Marked Trail - variant sudoku using XV pairs and arrows.
🔗: sudokupad.app/r0jvreajqj
Marked Trail - variant sudoku using XV pairs and arrows.
🔗: sudokupad.app/r0jvreajqj
Check out this puzzle by @fdmafc.bsky.social !
Pretzel - variant sudoku using XV pairs.
🔗: sudokupad.app/x14c8k53m7
Pretzel - variant sudoku using XV pairs.
🔗: sudokupad.app/x14c8k53m7
September 8, 2025 at 3:46 PM
Check out this puzzle by @fdmafc.bsky.social !
Pretzel - variant sudoku using XV pairs.
🔗: sudokupad.app/x14c8k53m7
Pretzel - variant sudoku using XV pairs.
🔗: sudokupad.app/x14c8k53m7
Check out this puzzle from @fdmafc.bsky.social !
Variant sudoku using cages and renban lines.
🔗: sudokupad.app/2rk0x52x35
Variant sudoku using cages and renban lines.
🔗: sudokupad.app/2rk0x52x35
September 5, 2025 at 5:01 PM
Check out this puzzle from @fdmafc.bsky.social !
Variant sudoku using cages and renban lines.
🔗: sudokupad.app/2rk0x52x35
Variant sudoku using cages and renban lines.
🔗: sudokupad.app/2rk0x52x35
Check out this puzzle from @fdmafc.bsky.social !
Countdown 10, 9, 8 ...: variant sudoku using cages and thermometers.
🔗: sudokupad.app/2d6c6zf430
Countdown 10, 9, 8 ...: variant sudoku using cages and thermometers.
🔗: sudokupad.app/2d6c6zf430
July 24, 2025 at 1:05 PM
Check out this puzzle from @fdmafc.bsky.social !
Countdown 10, 9, 8 ...: variant sudoku using cages and thermometers.
🔗: sudokupad.app/2d6c6zf430
Countdown 10, 9, 8 ...: variant sudoku using cages and thermometers.
🔗: sudokupad.app/2d6c6zf430
Check out this puzzle by @fdmafc.bsky.social !
A Smattering of Dots - variant sudoku using Kropki pairs.
🔗: sudokupad.app/9xw1os15hl
A Smattering of Dots - variant sudoku using Kropki pairs.
🔗: sudokupad.app/9xw1os15hl
June 30, 2025 at 1:57 PM
Check out this puzzle by @fdmafc.bsky.social !
A Smattering of Dots - variant sudoku using Kropki pairs.
🔗: sudokupad.app/9xw1os15hl
A Smattering of Dots - variant sudoku using Kropki pairs.
🔗: sudokupad.app/9xw1os15hl
Check out this puzzles by @fdmafc.bsky.social !
Up In The Air - variant sudoku using German whispers and Kropki pairs.
🔗: sudokupad.app/6p5hor0fln
Up In The Air - variant sudoku using German whispers and Kropki pairs.
🔗: sudokupad.app/6p5hor0fln
June 27, 2025 at 5:54 PM
Check out this puzzles by @fdmafc.bsky.social !
Up In The Air - variant sudoku using German whispers and Kropki pairs.
🔗: sudokupad.app/6p5hor0fln
Up In The Air - variant sudoku using German whispers and Kropki pairs.
🔗: sudokupad.app/6p5hor0fln
Check out this puzzle by @fdmafc.bsky.social !
Juneteenth - variant sudoku using Dutch Whispers and Ratio dots.
🔗: sudokupad.app/qwljt8mdxq
Juneteenth - variant sudoku using Dutch Whispers and Ratio dots.
🔗: sudokupad.app/qwljt8mdxq
June 19, 2025 at 3:15 PM
Check out this puzzle by @fdmafc.bsky.social !
Juneteenth - variant sudoku using Dutch Whispers and Ratio dots.
🔗: sudokupad.app/qwljt8mdxq
Juneteenth - variant sudoku using Dutch Whispers and Ratio dots.
🔗: sudokupad.app/qwljt8mdxq
Check out this puzzle by @fdmafc.bsky.social !
Breastplate - variant sudoku using thermometers and consecutive pairs.
🔗: sudokupad.app/zv113l0vtl
Breastplate - variant sudoku using thermometers and consecutive pairs.
🔗: sudokupad.app/zv113l0vtl
June 8, 2025 at 3:01 PM
Check out this puzzle by @fdmafc.bsky.social !
Breastplate - variant sudoku using thermometers and consecutive pairs.
🔗: sudokupad.app/zv113l0vtl
Breastplate - variant sudoku using thermometers and consecutive pairs.
🔗: sudokupad.app/zv113l0vtl
Check out this puzzle by @fdmafc.bsky.social !
Ring Around the Rosie - variant sudoku using arrows and quadruples.
🔗: sudokupad.app/41k6re8o1q
Ring Around the Rosie - variant sudoku using arrows and quadruples.
🔗: sudokupad.app/41k6re8o1q
June 6, 2025 at 11:28 PM
Check out this puzzle by @fdmafc.bsky.social !
Ring Around the Rosie - variant sudoku using arrows and quadruples.
🔗: sudokupad.app/41k6re8o1q
Ring Around the Rosie - variant sudoku using arrows and quadruples.
🔗: sudokupad.app/41k6re8o1q
Check out this puzzle by @fdmafc.bsky.social !
Completely Not Celtic - variant sudoku using cages.
🔗: sudokupad.app/faorvb2su7
Completely Not Celtic - variant sudoku using cages.
🔗: sudokupad.app/faorvb2su7
April 7, 2025 at 6:34 PM
Check out this puzzle by @fdmafc.bsky.social !
Completely Not Celtic - variant sudoku using cages.
🔗: sudokupad.app/faorvb2su7
Completely Not Celtic - variant sudoku using cages.
🔗: sudokupad.app/faorvb2su7
Our very own @fdmafc.bsky.social are presenting now! Join the livestream to watch ‘Snackdoku Setting Party’!
#SudokuCon #9x9
#SudokuCon #9x9
April 6, 2025 at 3:26 PM
Our very own @fdmafc.bsky.social are presenting now! Join the livestream to watch ‘Snackdoku Setting Party’!
#SudokuCon #9x9
#SudokuCon #9x9
April 5, 2025 at 10:56 PM
The last digit has been placed in the “1 Sudoku 81 Solvers” challenge with Gliperal!
#SudokuCon #9x9 #Sudoku
#SudokuCon #9x9 #Sudoku
April 5, 2025 at 6:47 PM
The last digit has been placed in the “1 Sudoku 81 Solvers” challenge with Gliperal!
#SudokuCon #9x9 #Sudoku
#SudokuCon #9x9 #Sudoku
9x9 Project partner, @zetamath.bsky.social , presenting on the Mathematics of Pencil Puzzles now at #SudokuCon !
April 5, 2025 at 4:37 PM
9x9 Project partner, @zetamath.bsky.social , presenting on the Mathematics of Pencil Puzzles now at #SudokuCon !
@sudokucon.bsky.social day 2 is on now with @rangsk.bsky.social , @sirxemic.com , and @killroy.bsky.social !
#SudokuCon #9x9
#SudokuCon #9x9
April 5, 2025 at 2:34 PM
@sudokucon.bsky.social day 2 is on now with @rangsk.bsky.social , @sirxemic.com , and @killroy.bsky.social !
#SudokuCon #9x9
#SudokuCon #9x9