NineByNine

October 2026 sudoku archive

20 daily puzzles in October 2026, each in four levels. Days without a link were not published yet when this page was built.

Calendar

October 2026: linked days have a puzzle
MonTueWedThuFriSatSun
1234
567891011
12131415161718
19202122232425
262728293031

Difficulty and hardest technique by day

Givens and the hardest technique needed, per level
DateEasyMediumHardExpert
Tuesday, October 20, 202636 givens · Hidden single33 givens · Pointing pair23 givens · XY-Wing26 givens · Simple coloring
Monday, October 19, 202637 givens · Hidden single32 givens · Pointing pair25 givens · XY-Wing25 givens · Simple coloring
Sunday, October 18, 202637 givens · Hidden single31 givens · Hidden pair26 givens · XY-Wing24 givens · XYZ-Wing
Saturday, October 17, 202636 givens · Hidden single32 givens · Pointing pair24 givens · XY-Wing26 givens · Simple coloring
Friday, October 16, 202638 givens · Hidden single32 givens · Pointing pair27 givens · XY-Wing25 givens · Simple coloring
Thursday, October 15, 202637 givens · Hidden single31 givens · Pointing pair25 givens · XY-Wing28 givens · Simple coloring
Wednesday, October 14, 202636 givens · Hidden single33 givens · Box/line reduction23 givens · XY-Wing24 givens · Simple coloring
Tuesday, October 13, 202637 givens · Hidden single32 givens · Pointing pair25 givens · XY-Wing24 givens · Simple coloring
Monday, October 12, 202636 givens · Hidden single31 givens · Pointing pair24 givens · XY-Wing26 givens · Simple coloring
Sunday, October 11, 202640 givens · Hidden single30 givens · Naked pair24 givens · XY-Wing25 givens · Swordfish
Saturday, October 10, 202640 givens · Hidden single33 givens · Pointing pair27 givens · XY-Wing30 givens · Simple coloring
Friday, October 9, 202637 givens · Hidden single30 givens · Pointing pair24 givens · XY-Wing27 givens · Unique rectangle (type 1)
Thursday, October 8, 202637 givens · Hidden single30 givens · Pointing pair28 givens · XY-Wing25 givens · Swordfish
Wednesday, October 7, 202636 givens · Hidden single31 givens · Box/line reduction26 givens · XY-Wing23 givens · XYZ-Wing
Tuesday, October 6, 202639 givens · Hidden single32 givens · Naked pair23 givens · XY-Wing25 givens · Simple coloring
Monday, October 5, 202637 givens · Hidden single31 givens · Pointing pair23 givens · XY-Wing26 givens · Simple coloring
Sunday, October 4, 202639 givens · Hidden single30 givens · Pointing pair25 givens · Hidden triple26 givens · Simple coloring
Saturday, October 3, 202636 givens · Hidden single33 givens · Box/line reduction24 givens · XY-Wing23 givens · Simple coloring
Friday, October 2, 202640 givens · Hidden single33 givens · Pointing pair26 givens · XY-Wing23 givens · Simple coloring
Thursday, October 1, 202638 givens · Hidden single31 givens · Pointing pair29 givens · X-Wing26 givens · Simple coloring
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Updated · Written by the NineByNine team