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Programming Enigma Puzzles

1 January 2014

Posted by on There are now 581 *Enigma* puzzles posted to the site, with a complete archive of puzzles from February 1979 to April 1982, and October 2005 up to the final *Enigma* puzzle in December 2013. This is just under one third of all *Enigma* puzzles published in **New Scientist**, and leaves around 1,200 more to find and add to the site.

In 2013 I added 286 *Enigma* puzzles to the site, the most challenging ones have, of course, been added to the list of **Challenging Puzzles**, but here is a list of those that I found the most fun to solve during 2013.

**New Puzzles:** (Originally published in **New Scientist** in 2013)

**Enigma 1734: Friendly factors**/ 30th January 2013

**Modern Classic Puzzles:** (Originally published between 2005 and 2007)

**Enigma 1359: The weaker sex**/ 24th September 2005**Enigma 1363: Hat stand**/ 22nd October 2005**Enigma 1375: Patterns of colour**/ 21st January 2006**Enigma 1379: Counting answers**/ 18th February 2006**Enigma 1386: Fair shares**/ 8th April 2006**Enigma 1387: Something to declare**/ 15th April 2006**Enigma 1399: A row of numbers**/ 8th July 2006**Enigma 1404: No repeats**/ 12th August 2006**Enigma 1416: Filling in the squares**/ 4th November 2006**Enigma 1431: Patience**/ 24th February 2007**Enigma 1444: Backslide**/ 26th May 2007**Enigma 1446: Double entendre**/ 9th June 2007

**Ancient Classic Puzzles:** (Originally published between 1979 and 1982)

**Enigma 37: Blocked**/ 1st November 1979**Enigma 54: Grid halving**/ 6th March 1980**Enigma 58: Octos**/ 3rd April 1980**Enigma 65: Plus and minus**/ 3rd July 1980**Enigma 69: Maximum Queen moves**/ 31st July 1980**Enigma 70: Find the catch**/ 7th August 1980**Enigma 73: Quartetting**/ 28th August 1980**Enigma 77: Missing triangles**/ 25th September 1980**Enigma 82: Quad-spoiling**/ 30th October 1980**Enigma 86: Septos**/ 27th November 1980**Enigma 90: Face value**/ 1st January 1981**Enigma 95: For love and money**/ 5th February 1981**Enigma 96: Different differences**/ 12th February 1981**Enigma 106: Magic box**/ 23rd April 1981**Enigma 108: Longest journey**/ 7th May 1981**Enigma 112: Two-square dissection**/ 4th June 1981**Enigma 120: No right turns**/ 30th July 1981**Enigma 128: All the junctions**/ 24th September 1981**Enigma 130: Lettered league**/ 8th October 1981**Enigma 135: Funny ending**/ 12th November 1981**Enigma 144: Spoiling triangles and quads**/ 21st January 1982**Enigma 146: Around the clock**/ 4th February 1982**Enigma 148: I spy**/ 18th February 1982**Enigma 152: The highways of Genoland**/ 18th March 1982

Sadly, I think this shows why **New Scientist** have chosen to discontinue new *Enigma* puzzles. Although almost a fifth of the new puzzles I put up on this site were originally published in 2013, only one of them made it to this list. (See also my **300 Enigma Analysis** in April 2013. The drought never ended, and at the end of play there had been a gap of 68 Enigmas that didn’t make the **Challenging** list).

In 2013 I enabled **Ratings** on the puzzles, which means you can give the puzzles you attempt a rating between 1 and 5 stars. I try to rate the puzzles as I add them to the site, and when I come across an old puzzle that I haven’t rated I rate that retrospectively as well.

Here is the 2013 stats report for **Enigmatic Code** prepared by **WordPress**.

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