Add new puzzles and update existing entries

py/pytudes.py

@@ -8,8 +8,10 @@ notebooks = {
 ("AlphaCode Automated Programming", 2022, 'AlphaCode.ipynb', "Analysis of AlphaCode's automated solution to a coding problem"),
 ('Advent of Code 2025: AI LLM Edition', 2025, 'Advent-2025-AI.ipynb', 'Using large language coding models to solve AoC puzzles'),
 ("Effectiveness of Language Models", 2019, 'Goldberg.ipynb', "A re-implementation in Python 3 of Yoav Goldberg's unreasonably effective character-level n-gram language model."),
+('How to Do Things with Words: NLP in Python', 2018, 'How%20to%20Do%20Things%20with%20Words.ipynb', 'Spelling Correction, Secret Codes, Word Segmentation, and more'),
 ('The Languages of English, Math, and Programming', 2024, 'Triplets.ipynb', 'LLMs do better at producing a program to solve this puzzle than they do at solving it directly'),
-("One Letter Off", 2023, 'OneLetterOff.ipynb', "Word game; use of a large language model to generate clues."),
+("LLMs, Theory of Mind, and Cheryl's Birthday", 2024, 'CherylMind.ipynb', "Do LLMs have enough theory of mind to solve the Cheryl's Birthday puzzle?"),
+("One Letter Off", 2023, 'OneLetterOff.ipynb', "Word game; use of large language model word embeddings to generate clues."),
 ('Project Euler #1–100 by a Human', 2026, 'Euler.ipynb', 'Solutions to the first 100 Project Euler math/programming problems'),
 ('Project Euler #1–100 by Fable LLM', 2026, 'Euler-Fable.ipynb', 'Solutions to Project Euler math/programming problems by Claude Fable LLM'),
 ('Project Euler #1–100 by Opus LLM', 2026, 'Euler-Opus.ipynb', 'Solutions to Project Euler math/programming problems by Claude Opus LLM'),
@@ -66,22 +68,24 @@ notebooks = {
 ("Euler's Sum of Powers Conjecture", 2018, "Euler's%20Conjecture.ipynb", 'Solving a 200-year-old puzzle by finding integers that satisfy a<sup>5</sup> + b<sup>5</sup> + c<sup>5</sup> + d<sup>5</sup> = e<sup>5</sup>'),
 ('Four 4s, Five 5s, and Countdowns', 2020, 'Countdown.ipynb', 'Solving the equation 10 _ 9 _ 8 _ 7 _ 6 _ 5 _ 4 _ 3 _ 2 _ 1 = 2016. Originally from an Alex Bellos puzzle'),
 ('How to Count Things', 2020, 'How%20To%20Count%20Things.ipynb', 'Combinatorial math: how to count how many things there are, when there are a lot of them'),
-('KenKen (Sudoku-like Puzzle)', 2021, 'KenKen.ipynb', 'A Sudoku-like puzzle, but with arithmetic.'),
 ('Number Bracelets Game', 2024, 'NumberBracelets.ipynb', 'A game involving numbered beads on a circular bracelet.'),
 ('Pairing Socks', 2019, 'Socks.ipynb', 'What is the probability that you will be able to pair up socks as you randomly pull them out of the dryer?'),
 ('Sicherman Dice', 2018, 'Sicherman%20Dice.ipynb', 'Find a pair of dice that is like a regular pair of dice, only different'),
 ("Sol Golomb's Rectangle Puzzle", 2014, 'Golomb-Puzzle.ipynb', 'A Puzzle involving placing rectangles of different sizes inside a square'),
 ("Stubborn number endings", 2024, 'Stubborn.ipynb', 'Any number ending in 5 has a square that also ends in 5. What other endings are like this?'), 
-('Star Battle (Sudoku-like Puzzle)', 2021, 'StarBattle.ipynb', 'Fill-in-the-grid puzzle similar to Sudoku'),
+('Square Sum Chain Puzzle', 2020, 'SquareSum.ipynb', 'Place the numbers from 1 to n in a chain (or a circle) such that adjacent pairs sum to a perfect square'),
-('Sudoku', 2006, 'Sudoku.ipynb', 'Classic fill-in-the-grid puzzle'),
-('Sudoku: 400,000 puzzles/second in Java', 2021, 'SudokuJava.ipynb', 'A version of the Sudoku solver using parallel threads and other optimizations'),
-('Square Sum Puzzle', 2020, 'SquareSum.ipynb', 'Place the numbers from 1 to n in a chain (or a circle) such that adjacent pairs sum to a perfect square'),
 ("When is Cheryl's Birthday?", 2020, 'Cheryl.ipynb', "Solving the *Cheryl's Birthday* logic puzzle"),
 ('When Cheryl Met Eve: A Birthday Story', 2015, 'Cheryl-and-Eve.ipynb', "Inventing new puzzles in the Style of Cheryl's Birthday"),
-("LLMs, Theory of Mind, and Cheryl's Birthday", 2024, 'CherylMind.ipynb', "Do LLMs have enough theory of mind to solve the Cheryl's Birthday puzzle?"),
 ('xkcd 1313: Regex Golf', 2015, 'xkcd1313.ipynb', 'Find the smallest regular expression; inspired by Randall Munroe'),
 ('xkcd 1313: Regex Golf (Part 2: Infinite Problems)', 2015, 'xkcd1313-part2.ipynb', 'Regex Golf: better, faster, funner (with Stefan Pochmann)')],
 
+'Sudoku and Similar Puzzles': [
+('Sudoku', 2006, 'Sudoku.ipynb', 'Classic fill-in-the-grid puzzle solved in Python'),
+('Sudoku: 400,000 puzzles/second in Java', 2021, 'SudokuJava.ipynb', 'A Java version of the Sudoku solver using parallel threads and other optimizations'),  
+('KenKen (Sudoku-like Puzzle)', 2021, 'KenKen.ipynb', 'A Sudoku-like puzzle, but with arithmetic.'),
+('Star Battle (Sudoku-like Puzzle)', 2021, 'StarBattle.ipynb', 'Fill-in-the-grid puzzle similar to Sudoku'),
+],
+
 'Word Puzzles': [
 ('Boggle / Inverse Boggle', 2020, 'Boggle.ipynb', 'Find all the words on a Boggle board; then find a board with a lot of words'),
 ('Chemical Element Spelling', 2020, 'ElementSpelling.ipynb', 'Spelling words using the chemical element symbols, like CoIn'),
@@ -89,7 +93,6 @@ notebooks = {
 ('Equilength Numbers: FOUR = 4', 2020, 'equilength-numbers.ipynb', 'What number names have the same letter count as the number they name (such as FOUR)?'),
 ('Gesture Typing', 2017, 'Gesture%20Typing.ipynb', 'What word has the longest path on a gesture-typing smartphone keyboard?'),
 ('Ghost: A Word game', 2017, 'Ghost.ipynb', 'The word game Ghost (add letters, try to avoid making a word)'),
-('How to Do Things with Words: NLP in Python', 2018, 'How%20to%20Do%20Things%20with%20Words.ipynb', 'Spelling Correction, Secret Codes, Word Segmentation, and more'),
 ("Let's Code About Bike Locks", 2015, 'Fred%20Buns.ipynb', 'A tale of a bicycle combination lock that uses letters instead of digits. Inspired by Bike Snob NYC'),
 ('Scrabble: Refactoring a Crossword Game Program', 2017, 'Scrabble.ipynb', 'Refactoring the Scrabble / Word with Friends game from Udacity 212'),
 ('Spelling Bee', 2020, 'SpellingBee.ipynb', 'Find the highest-scoring board for the NY Times Spelling Bee puzzle'),