Spy Sudoku for 10/30/2026: CHURN

Spy Sudoku is my new word game based on Word Sudoku. Each day, you're given a 5-letter word, and told which letter to take away or add, to solve a 4x4 and 6x6 Word Sudoku puzzle.

Fair warning! These puzzles use more than just the common words you undoubtedly know; they also include rare, obsolete, and archaic words, scientific terms, and even names of people and places. This is because the rules of Sudoku don't require you to know the word to solve the puzzle. Most of the week, the hidden words are ones you'll probably recognize—common and familiar. Some days, especially Fridays and Sundays, you may encounter unfamiliar words. But the logic of Sudoku will always lead you to the answers, and you might learn some new words!

On Sundays, you'll also be challenged to solve a 5x5 puzzle spelling out an anagram of the 5-letter word.

I'd love your feedback! Please use the blog comment feature to let me know what works for you, and what doesn't.

Today’s keyword is CHURN.
Drop "H" and use the remaining letters to solve the 4x4 puzzle.
Add "A" to the keyword to supply the letters to solve the 6x6 puzzle.

One or both of today’s hidden words may be less familiar; your Sudoku skills will reveal all!

-H

CHURN

+A

Solutions tomorrow morning.

Thanks,
--Dave

Solutions to yesterday's Spy Sudoku puzzles

Yesterday's Spy Sudoku keyword: SHOYU
4x4 (SHOYU - U): HOYS
6x6 (SHOYU + T): YOUTHS

Thanks,
--Dave

 

New Word Sudoku Puzzles for Friday, 10/30/2026

HT + SIX
5x5 Hidden Word Sudoku Puzzle
Each row, column and enclosed shape contains these letters exactly once
The hidden word spells out in the shaded cells

FLOE + SIX
7x7 Hidden Word Sudoku Puzzle
Each row, column and enclosed shape contains these letters exactly once
The hidden word spells out in the shaded cells

Solutions first thing in the morning.

Thanks,
--Dave

 

Solution to Thursday's Word Sudoku Puzzle

Yesterday's 10x10 Hidden Word Sudoku puzzle was based on the letters in PUN MODE + SIX (MISEXPOUND).

New puzzles in a bit.

Thanks,
--Dave

 

Spy Sudoku for 10/29/2026: SHOYU

Today's keyword is SHOYU.
Drop "U" and use the remaining letters to solve the 4x4 puzzle.
Add "T" to the keyword to supply the letters to solve the 6x6 puzzle.

Today’s hidden words should be familiar to most players.

-U

SHOYU

+T

Solutions tomorrow morning.

Thanks,
--Dave

 

Solutions to yesterday's Spy Sudoku puzzles

Yesterday's Spy Sudoku keyword: SCHAV
4x4 (SCHAV - H): VACS
6x6 (SCHAV + O): HAVOCS

Thanks,
--Dave

 

New Word Sudoku Puzzle for Thursday, 10/29/2026

PUN MODE + SIX
10x10 Hidden Word Sudoku Puzzle
Each row, column and 2x5 rectangle contains these letters exactly once
The hidden word spells down the diagonal

Solution first thing in the morning.

Thanks,
--Dave

 

Spy Sudoku for 10/28/2026: SCHAV

Today's keyword is SCHAV.
Drop "H" and use the remaining letters to solve the 4x4 puzzle.
Add "O" to the keyword to supply the letters to solve the 6x6 puzzle.

Today’s hidden words should be familiar to most players.

-H

SCHAV

+O

Solutions tomorrow morning.

Thanks,
--Dave

 

Solutions to yesterday's Spy Sudoku puzzles

Yesterday's Spy Sudoku keyword: SAVOY
4x4 (SAVOY - Y): AVOS
6x6 (SAVOY + R): SAVORY

Thanks,
--Dave

 

New Word Sudoku Puzzle for Wednesday, 10/28/2026

REPAY + SIX
8x8 Hidden Word Sudoku Puzzle
Each row, column and 2x4 rectangle contains these letters exactly once
The hidden word spells down the diagonal

Solution tomorrow morning.

Thanks,
--Dave

 

Solution to Tuesday's Word Sudoku Puzzle

Yesterday's 9x9 Hidden Word Sudoku puzzle was based on the letters in ROUNCE + SIX (EXCURSION).

A new puzzle in a few hours.

Thanks,
--Dave

 

Spy Sudoku for 10/27/2026: SAVOY

Today's keyword is SAVOY.
Drop "Y" and use the remaining letters to solve the 4x4 puzzle.
Add "R" to the keyword to supply the letters to solve the 6x6 puzzle.

One or both of today’s hidden words may be less familiar; your Sudoku skills will reveal all!

-Y

SAVOY

+R

Solutions tomorrow morning.

Thanks,
--Dave

 

Solutions to yesterday's Spy Sudoku puzzles

Yesterday's Spy Sudoku keyword: CAGEY
4x4 (CAGEY - Y): CAGE
6x6 (CAGEY + N): AGENCY

Thanks,
--Dave

 

New Word Sudoku Puzzle for Tuesday, 10/27/2026

ROUNCE + SIX
9x9 Hidden Word Sudoku Puzzle
Each row, column and 3x3 square contains these letters exactly once
The hidden word spells down the diagonal

Solution first thing in the morning.

Thanks,
--Dave

 

Solutions to Monday's Word Sudoku Puzzles

Yesterday's 4x4 Hidden Word Sudoku puzzle was based on the letters in EL + SI (ISLE) and the 6x6 Hidden Word Sudoku puzzle was based on the letters in RUBE + SX (EXURBS).

A new set of puzzles in a few hours.

Thanks,
--Dave

 

Spy Sudoku for 10/26/2026: CAGEY

Today's keyword is CAGEY.
Drop "Y" and use the remaining letters to solve the 4x4 puzzle.
Add "N" to the keyword to supply the letters to solve the 6x6 puzzle.

Today’s hidden words should be familiar to most players.

-Y

CAGEY

+N

Solutions tomorrow morning.

Thanks,
--Dave

 

Solutions to yesterday's Spy Sudoku puzzles

Yesterday's Spy Sudoku keyword: GORPS
4x4 (GORPS - G): PROS
6x6 (GORPS + E): GROPES
5x5: PROGS

Thanks,
--Dave

 

New Word Sudoku Puzzles for Monday, 10/26/2026

EL + SI
4x4 Hidden Word Sudoku Puzzle
Each row, column and 2x2 square contains these letters exactly once
The hidden word spells out in the shaded cells

RUBE + SX
6x6 Hidden Word Sudoku Puzzle
Each row, column and 2x3 rectangle contains these letters exactly once
The hidden word spells down the diagonal

Solutions first thing in the morning.

Thanks,
--Dave

 

Solution to the Sunday Challenge Word Sudoku Puzzle

Yesterday’s Sunday Challenge 12x12 Hidden Word Sudoku Puzzle was based on the letters in PUN BRACKET + SI (BANKRUPTCIES).

New puzzles in a few hours.

Thanks,
--Dave

 

Spy Sudoku for 10/25/2026: GORPS

Today's keyword is GORPS.
Drop "G" and use the remaining letters to solve the 4x4 puzzle.
Add "E" to the keyword to supply the letters to solve the 6x6 puzzle.
Solve the 5x5 to discover a keyword anagram.

One or both of today’s hidden words may be less familiar; your Sudoku skills will reveal all!

-G

GORPS

+E

Solutions tomorrow morning.

Thanks,
--Dave

All puzzles and text contained in this blog are copyright © 2008-2026, David H. Thompson. All rights reserved. Please tell your puzzle-loving friends to follow this blog. Thank you!

 

Solutions to yesterday's Spy Sudoku puzzles

Yesterday's Spy Sudoku keyword: RYNDS
4x4 (RYNDS - N): DRYS
6x6 (RYNDS + U): SUNDRY

Thanks,
--Dave

 

Sunday Challenge: New Word Sudoku Puzzle for Sunday, 10/25/2026

PUN BRACKET + SI
Sunday Challenge: 12x12 Hidden Word Sudoku Puzzle
Each row, column and 3x4 rectangle contains these letters exactly once
The hidden word or words spell down the diagonal

Solution first thing in the morning.

Thanks,
--Dave

(All puzzles and text contained in this blog are copyright © 2008-2026, David H. Thompson. All rights reserved.
Please tell your puzzle-loving friends to follow this blog. Thank you!)

 

Solutions to the Saturday Paraprosdokian Sudoku Puzzles

Yesterday’s Qudoku puzzle sets spelled out wordplay known as a paraprosdokian.

The Sunday Challenge in a few hours.

Thanks,
--Dave

 

Spy Sudoku for 10/24/2026: RYNDS

Today's keyword is RYNDS.
Drop "N" and use the remaining letters to solve the 4x4 puzzle.
Add "U" to the keyword to supply the letters to solve the 6x6 puzzle.

One or both of today’s hidden words may be less familiar; your Sudoku skills will reveal all!

-N

RYNDS

+U

Solutions tomorrow morning.

Thanks,
--Dave

 

Solutions to yesterday's Spy Sudoku puzzles

Yesterday's Spy Sudoku keyword: YIRTH
4x4 (YIRTH - Y): THIR
6x6 (YIRTH + S): THYRSI

Thanks,
--Dave