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Comments in green were written by me. Comments in blue were not written by me.
@Neal: No, there may be zeroes in the three digit numbers (but you can discard these when solving the final logic puzzle as there are no zeros in the answer to that).
Matthew
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 2026 

May 2026

World Cup stickers 2026

Apr 2026

A new puzzle every day
Mixing Wordle with other games

Feb 2026

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 2025 

Dec 2025

Christmas card 2025

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Christmas (2025) is coming!

Sep 2025

The partridge puzzle

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TMiP 2025 puzzle hunt

Jun 2025

A nonogram alphabet

Mar 2025

How to write a crossnumber

Jan 2025

Christmas (2024) is over
Friendly squares
 2024 

Dec 2024

A regular expression Christmas puzzle
Christmas card 2024

Nov 2024

Christmas (2024) is coming!

Feb 2024

Zines, pt. 2

Jan 2024

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