List of Python Kata to Update

• Python 3.8 List of kata stuck in Python 3.8. Should be prioritized so we can get rid of the older version. Note that updating to decorator syntax is not required.
• Python 3.10 List of kata stuck in Python 3.10.
• Update to decorator syntax List of kata not using the new decorator syntax.

NOTE: Simply remove the kata from the list after updating.

Python 3.8

This section lists kata that failed to update to Python 3.10 or 3.11 automatically.

1. Create a one-liner FTP client with the ftplib
2. Find Ends of Each Paths
3. One Line Task: Zero Or One
4. The Messenger's Oracle

Python 3.10

This section lists kata that failed to update to Python 3.11 from 3.10 automatically or was created with Python 3.10 after the attempt.

1. Big Big Big Padovan Number
2. Big Generalized Fibonacci numbers
3. Byte me!
4. Calculate k-th digit of π (Pi)
5. Convergents of e
6. Data mining #2
7. Fabergé Easter Eggs crush test
8. Fibonacci With a Broken Interpreter
9. How many double digits?
10. I said the word WOULD instead of WOULDN'T
11. Last digits of N^2 == N
12. Matrix Exponentiation
13. Micro Optimization: Digit Sum
14. Next smaller pronic
15. Number Decoding
16. Pack Some Chocolates
17. Pandas Series 103: Filter Rows From DataFrames That Don't Satisfy Condition
18. Perimeter of squares in a rectangle
19. pipi Numbers!
20. Planning a city quarantine
21. Reverse a singly-linked list
22. Shuffle It Up II
23. Squares sequence
24. Sum of all numbers with the same digits (performance edition)
25. Sum of certain products II
26. Time Is Money (number of operations)
27. Validate FEN notation
28. Web Polygons
29. Wordle! Cheat bot

Test Framework

This section lists Python kata without @test.it in submission tests. This doesn't prevent Python 3.8 upgrade, but we'll be able to make the test framework behave less awkwardly if we can update all kata to the new syntax.

1. [Code War] The Weapon Factory: Assembly Line
2. #3 Matrices: Rearrange the matrix
3. 2 Arrays 1 Sort
4. 3-2-1 Fire!
5. 3D Cellular Neighbourhood
6. 3D Sudoku Builder (a.k.a. multisize skyscraper puzzle)
7. 4 By 4 Skyscrapers
8. 5x5 Nonogram Solver
9. A Crazy Robot? Who's is behind the scenes to make that?
10. A Python iterator for people scared of Exceptions.
11. AD2070: Help Lorimar troubleshoot his robots-Search and Disable
12. Adding words - Part I
13. Adding words - Part II
14. ADFGX Simplified
15. AdFly Encoder and Decoder
16. Airport Arrivals/Departures - #1
17. Alex & snooker: points earned.
18. Algebraic Lists
19. Algorithm Fun: Find The Unknown Number - Part I
20. All divisors of large numbers
21. All Star Code Challenge #31
22. All that is open must be closed...
23. Alpha to Numeric and Numeric to Alpha
24. An Introduction to DocTesting...
25. Angle between two planes
26. Answer the students' questions!
27. Apparently-Modifying Strings
28. Approximate Fractions
29. Approximate solution of differential equation with Runge-Kutta 4
30. Are they really equals ?
31. Are you available?
32. Are you Geometric or Arithmetic? No, I´m both of them.
33. Area of a Shape
34. Arithmetic Expression Placeholders
35. Arithmetic Sequence - find hidden
36. Arithmetic Sequence!
37. Array Hyperrectangularity
38. Array Info
39. Array reduction
40. Array to HTML table
41. ASCII Cipher
42. ASCII Logo Basic
43. ASCII85 Encoding & Decoding
44. Assembling a Circular Genome (Shortest Common Superstring)
45. Assorted Rectangular Pieces Puzzle
46. Asyncio - The Beginning
47. Author Disambiguation: a name is a Name!
48. Author Disambiguation: Signatures worth it
49. Author Disambiguation: to the point
50. Averaging in an Infinite Array
51. Avoid trillion years of calculations !!
52. Bad Apples
53. Bad Exception Handling
54. Balance the parentheses
55. Balanced parentheses string
56. Base Conversion
57. Base Reduction
58. BasE91 encoding & decoding
59. Basic Optimization - Collatz Sum Sequence
60. Basic physics problem - Space -Kinematics
61. Basic socket server
62. Basic subclasses - Adam and Eve
63. Batman Quotes
64. Become The Ultimate Phychic
65. Beggar Thy Neighbour
66. Bernoulli numbers
67. Berserk rater: CG Vs. Clang
68. Bezier Curves
69. Big Generalized Fibonacci numbers
70. Binary Range Extraction
71. Binary search tree validation
72. Binary Search Trees
73. Binary Simulation
74. Binary Tree Compare
75. Binding of Algebraic Data Types
76. Bingo Card
77. Bishop Movement checker
78. Blaine is a pain
79. Blobservation
80. Bloxorz Solver
81. Boolean array generator
82. Bowling score calculator
83. Bracket Buster
84. Brainfuck Translator
85. Bridge Puzzle
86. Bridge: SAYC Openings
87. Build a Trie
88. Building blocks
89. Building Chains Using the Arithmetic Derivative of a Number
90. Button sequences
91. Cable Matching Problem
92. Caeser Encryption
93. Calculate daily accurate interest for a bank account
94. Calculate the expression
95. Calculating Expected Utility
96. Call Center Call Backs
97. Can these three numbers form a date?
98. can you guess what it is ?
99. Candy thieves
100. Car Rental Business Needs Statistics and Programming
101. Card-Chameleon, a Cipher with Playing Cards
102. Carpet shop
103. Cartesian neighbors distance
104. Cartesian product
105. Castle of Cubes
106. Cat and Mouse - 2D Version
107. Challenge Fun #17: Merge Arrays
108. Chameleon unity
109. Cheat at rock paper scissors!
110. Check and Mate?
111. Checkerboard King Combo Move
112. Checkout Line Pricing
113. Chess Fun #10: Chess Encryption
114. Chess Fun #9: Bishops And Rooks
115. Chess position parser (FEN)
116. Children and candies
117. Chocolate problem
118. Choose featured projects for Gratipay's homepage!
119. Circle area inside square
120. Circular Limited Sums
121. Clock Hands
122. Clock Lock - Save the World, Time Traveler! :)
123. Clone Graph
124. Cockroach Bug Scatter
125. Codenames - matrix conversions
126. Codewars API
127. Codwars or Codewars?
128. Cody Block's Pro Skater
129. Columnar Transposition Cipher Collisions
130. Composed Integers Having Prime Factors Only Once
131. Compound Nouns, Common Nouns, and Adjectives Test
132. Computational Geometry #1: Mixing Paints
133. Compute Nullable Non-Terminals
134. Confidence Intervals
135. Connect Four - placing tokens
136. Consecutive Digit Constraints
137. Construct Graph Class (simple)
138. Context manager decorator
139. Continuation in arguments, part 1
140. Convergents of e
141. Convert between radians and degrees
142. Convert integer to Whitespace format
143. Convex hull area
144. Conways game of life on a toroidal array
145. Coordinates Validator
146. Coping with NP-Hardness #1: 2-SAT
147. Coping with NP-Hardness #2: Max Weight Independent Set of a Tree
148. Coping with NP-Hardness #3: Finding the Minimum Hamiltonian Cycle
149. Coping with NP-Hardness #4: 3-Recoloring
150. Correct the date-string
151. Count Connectivity Components
152. Count the days!
153. Count The Hits Adding Contiguous Powers!
154. Countdown
155. Counting Cuts
156. Counting hexagons
157. Courier 🚚
158. Cracking the Vigenère cipher, step 1: determining key length
159. Crane Operation
160. Crazed Templating
161. Create a one-liner FTP client with the ftplib
162. Cricket Scores
163. Crouching Distribution, Hidden Constant
164. Custom Array Filters
165. Custom Christmas Tree III: the center of leaves
166. Cut me in Pieces but in The Way I Like
167. Cut the cake
168. Cycle Detection: Floyd's The Tortoise and the The Hare
169. Cycle Detection: greedy algorithm
170. D&D Character generator #1: attribute modifiers and spells
171. D&D Character generator #2: psion power points
172. D&D Character generator #3: carrying capacity
173. Data mining #1
174. Date Format Validation
175. Deadlock Detection
176. Debug the functions EASY
177. Debugger
178. Decimal to any Rational or Irrational Base Converter
179. Decipher the sentence
180. Decode the Morse code, advanced
181. Decode the Morse code, for real
182. Decompose a number
183. Decreasing Numbers with N Digits
184. Deficiently Abundant Perfect Amicable Numbers
185. Democracy Representation
186. denumerate string
187. Department scheduler [simple]
188. Derpcode Interpreter
189. Design a Simple Automaton (Finite State Machine)
190. Detecting Factions in Friend-Foe Networks
191. Determine Results of Pole Vault Competition
192. Devil's Sequence
193. DevOps legacy roasting -> disco inferno -> burn baby burn
194. Dice rolls threshold
195. Diff That Poly!
196. Diophantine Equation Solver
197. Disease Spread
198. Distance between two points
199. Divide polynomial by polynomial
200. Divisible by primes
201. Divisor harmony
202. Dobble
203. Dobble: Identify the missing cards
204. Dog recommendation system
205. Dollar words
206. Domino Tiling - 2 x N Board
207. Domino Tiling - 3 x N Board
208. Dota 2 Bots - Pudge's Meat Hook
209. Double Even Magic Square
210. Doubly Linked List
211. Draw a Circle.
212. Dropzone
213. Dynamic Connectivity
214. Easy Cyclist's Training
215. Egg Drops
216. Eight ways to iterate over table
217. Elections: Weighted Average
218. Elo rating - one game, one pair
219. Endianness Conversion
220. Endless String
221. Enigeliisohe too Eniigeeliiisoohee Toroanisoliatooro
222. Enumerable Magic #30 - Split that Array!
223. Error Correction Codes
224. Escape the Aliens
225. Escape the maze
226. Esolang Interpreters #1 - Introduction to Esolangs and My First Interpreter (MiniStringFuck)
227. Esolang Interpreters #3 - Custom Paintf**k Interpreter
228. Esolang: InfiniTick
229. Esolang: Stick
230. Esoteric Language: 'Poohbear' Interpreter
231. Euclidean distance in n dimensions
232. Euler method for numerical integration
233. Euler Squares
234. Evil Autocorrect Prank
235. Exact p
236. Exception Handling (with restrictions)
237. Exclusive presentations
238. Exercise in Summing
239. Experimenting with a sequence of complex numbers
240. Express number as sum of four squares
241. Fabergé Easter Eggs crush test
242. Family Relations
243. Family Tree - Ancestors
244. Fastest Code : Equal to 24
245. Fat Fingers
246. Feed Kahumolings!
247. Fibonacci With a Broken Interpreter
248. File Path Operations
249. Fill in the gaps in my timesheet.
250. Filtering Values For an Election
251. Financing a purchase
252. Find all possible number combos that sum to a number
253. Find All The Unique Substrings
254. Find amplitude of a binary tree
255. Find Ends of Each Paths
256. Find the Biggest Triangle
257. Find the centre of a sphere
258. Find the Counterfeit
259. Find the files then read them
260. Find the lines!
261. Find the most adjacent integers of the same value in a grid
262. Find the name of the lucky variable
263. Find the Next Powers Higher than a Given Value With Given Constraints
264. Finding a Circulation
265. Finish Guess the Number Game
266. Finish NxN Array Tic-Tac-Toe Game
267. First n Prime Numbers
268. First-Class Function Factory
269. Fix arithmetic progression
270. Fix array sequence
271. Fix the base conversion function!
272. Fix the Bugs (Syntax) - My First Kata
273. Fix the pipes
274. Fix the robot and save the secret Mars base
275. Fixed-length integer partitions
276. Fizz Buzz Reloaded
277. FizzBuzz++
278. Flatten A Nested Dictionary That Contains Lists
279. Float or Integer verifier
280. Floating-point Approximation (III)
281. Folding Tiles Solver
282. Following the Paths of Numbers Through Prime Factorization
283. Football Season
284. Fractions class
285. Fractions of a currency' smallest value
286. Frogificator
287. Fuel usage reporting
288. Function Composition
289. Function iteration
290. Funnel Out A String
291. Gambling Game: Choosing Order
292. Game of Go
293. Game of Thrones : Wildlings are coming!
294. Geohashing
295. Get recursion limit
296. Get the Excel column title!
297. getting started #let's piay
298. Getting the neighbors
299. Give me data
300. Gnomes and Hats: A Horror Story
301. Golden Section Search
302. GPS coordinate conversions - DD to DMS
303. Grid index
304. Group prime numbers
305. Guess the (prime) number, digit by digit
306. Guess the float #1
307. Guess the list pattern #2
308. Guess the list pattern #3
309. Guess the list pattern #4
310. Guess Who?
311. guessing game server
312. Gymbro's Unique Gym - Weight Calculator
313. Hack the NSA
314. Hackermann
315. Hanoi Tower Array
316. Happy Numbers. Another performance edition.
317. Heartbeat Status Montor
318. Help Green Lantern with his web site
319. Help Mr. E
320. Help Suzuki pack his coal basket!
321. Helpers For a 3DGame I: Biggest Triangle in a Sphere
322. Heroes of Might & Magic II: Chain Lightning
323. Hidden pixels
324. Hide a message in a deck of playing cards
325. High score table
326. How far away is it ?
327. How good are you really?
328. How long each order will take
329. How many dots are covered
330. HTML Complementary Color
331. HTML Element Generator
332. Hungarian Cardinal Numerals
333. Hypercube Lists
334. I Liked the SQL Better...
335. I'm already Tracer
336. Image host filename generator
337. Image Processing: Gaussian Blurring
338. Imaginary Base Conversion
339. Imperfect Fibonacci Rabbits
340. Implement Classes by using Functions
341. Implementing SHA-1
342. Inertial Array
343. Infinite continued fractions
344. Insane Circular Limited Sums
345. Insane Increasing or Decreasing Numbers
346. Insane Tri-Bicolor Tiling
347. Integer factorization: CFRAC basics
348. Integer to string deciphering
349. Integer triangles
350. Integer Triangles I: Maximum Number of Integer Triangles with the Smallest Perimeter
351. Interlaced Spiral Cipher
352. Intro to Statistics - Part 1: A Five figure summary
353. Intro to Statistics - Part 2: Boxplots
354. Intro to Statistics - Part 3: Correlation Coefficients
355. IntroToArt
356. intTunes
357. IPv4 Parser
358. IRR Calculation - evaluation of profitability
359. Is it a group? (Group theory, Abstract algebra)
360. Is there a sequence re-occuring in the list
361. Is this a good batch of stout? (Student's t test)
362. Is this event within this time?
363. Isogram Cipher
364. Iterative Rotation Cipher
365. Jacob's Weight Loss Program
366. Javascript filter - 1
367. Jimmy's Journey
368. Job Matching #2
369. Jobs
370. Johnny the Poker Player - What is my equity?
371. Joyful Transpiler
372. Jumble words
373. Jungerstein's Math Training Room: 4. O Pascal tree, how green are your leaves?
374. Jungerstein's Math Training Room: 5. Cat back
375. Kata 2019: Bonus Game II
376. Kata Impossible I - The Impossible Lottery
377. KISS - Keep It Simple Stupid
378. Knapsack problem - the max value with the lists of elements
379. Krazy King Blackjack
380. Largest Numeric Palindrome
381. Largest Power that Divides a Large Factorial
382. Largest prime number containing n digit
383. Last digits of N^2 == N
384. Latin Squares
385. Lattice Paths, But...?
386. Lazily executing a function
387. Lazy Init
388. Learning Remote Control
389. Left$ and Right$
390. Length Factorial Encryption
391. Let's Play Darts: Beat The Power!
392. Letterss of Natac
393. Letterss of natac: build or buy
394. Level Up!
395. Lexographic sort with a twist
396. Linked Lists - Front Back Split
397. Linked Lists - Remove Duplicates
398. Linked Lists - Shuffle Merge
399. Linked Lists - Sorted Merge
400. Linux history and ! command. Series#3 The !-n command
401. Linux history and ! command. Series#4 The !string command
402. Linux history and ! command. Series#5 The !?string command
403. List of pairs instead of dictionary
404. Little PL/SQL parser - get text literals
405. Logic Detective
406. Longest Consecutive Sequence of Squares
407. Longest Palindromic Substring (Linear)
408. Looper
409. Loose Change (Part 2)
410. Ludic numbers
411. Magic Zeckendorf
412. Magritte - Golconda
413. Mahjong - #1 Pure Hand
414. Making Copies
415. Markings to White Triangles and How to Find Them
416. Master your primes: sieve with memoization
417. Mastermind
418. matrix expanding
419. Matrix Exponentiation
420. Max Collatz Sequence Length
421. Max number of people and year in a specific place
422. Maximum 2d subarray sum
423. Maximum Area in Histogram
424. Maximum Overkill
425. Maze Exit
426. Mean without outliers
427. Message from Alien (Easy Version)
428. Midpoint Sum
429. Minesweeper
430. Minimal Cost Binary Search Trees
431. Minimal Squarewave PCM Synthesizer
432. Minimum exact p
433. Minimum number of taxis
434. Minimum path in squares
435. Minimum Transactions
436. Minimum unfairness of a list/array
437. Mistaking a forest for a tree
438. Molecule to atoms
439. Mongodb ObjectID
440. MONTE CARLO 3D
441. Morse Encoding
442. Most improved - Puzzles #4
443. MTV Cribs
444. Multi Poly Coordinates
445. Multicast IP Address to MAC address mapping
446. Multiply Two Numbers Without Integers
447. Multiply without asterisk
448. Multiplying Binomials
449. Multisize Nonogram Solver
450. Musical Scales and Modes
451. My smallest code interpreter (aka Brainf**k)
452. My Very Own Python's Split Function
453. Mysterious Letters
454. N Linear
455. n-Bonacci Ratio
456. N-centered Array
457. N-Dimensional Vector Magnitude
458. N00bify - English to n00b Translator
459. Nerdle - The General Version
460. New season, new league
461. Next level string padding
462. NIM the game
463. No adjacent integers sequence generator
464. No arithmetic progressions
465. No unknown variables!
466. Northwest and Southeast corners
467. nova polynomial 5. from roots
468. Now that's a crib!
469. Number Decoding
470. Numbers Having Digits Occurring Only Once
471. Numbers with Collatz Starting Patterns
472. Nut Farm
473. Nut Farm 2
474. OCR Numbers
475. Odd-squares traversal
476. Odder than the rest - 2
477. Old Mobile Display
478. One for His Nob: Scoring Cribbage Hands
479. One Line Task: Diamond Creator Pro
480. One line task: Is the King in check ?
481. One Line Task: Palindrome String
482. Only-Readable-Once list
483. Operator Insertion
484. Optimal Taxi Fare
485. Optimized Pathfinding Algorithm
486. Ordinal Numbers
487. Packet Delivery -- Enforcing Constraints
488. packing rectangles
489. Palindrome integer composition
490. Palindromic Expression
491. Palindromization
492. Pandigital Sequence
493. Paperboy 2
494. Papers, Please
495. Parametric to Rectangular Equation
496. Parentheses are loud !
497. Parse python terminal output
498. Parse the log
499. Password generator
500. Password validator
501. Path Finder #4: where are you?
502. Perimeter Sum
503. Permutation-free Strings
504. Physics - Mechanics - Atwood Machines in Series
505. Pi approximation fractions
506. Picking the best casino game
507. Plotting points on a grid.
508. Polydivisible Numbers
509. Polynomial Evaluation - Binomial Form
510. Posix command
511. Possibilities of throwing a coin n times
512. Possible Triangles Formed with Available Iron Rods
513. Power Laws
514. Power tower modulo m
515. Precise fractions pt. 1 - basics
516. Prefill an Array
517. Prime Ant - Crazy Version
518. Prime factorization
519. Prime number decompositions
520. Probabilities for Sums in Rolling Cubic Dice
521. Probable Prime or Composite (Much bigger primes)
522. Process Waterfowl Survey Data Results
523. Processes
524. Program hangs!
525. Progress of a challenge
526. Progressive Spiral Number Branch
527. Projectile Motion
528. Promenade Fractions (from BIO 2016)
529. Propositional SAT Problem
530. Propositional SAT Problem [Performance]
531. Python's Dynamic Classes #1
532. Python's Dynamic Classes #3
533. Quadratic Enumerator
534. Quest: Kill ten rats!
535. Queue Battle
536. Radical Simplifier
537. Radix Tree
538. Random Integers
539. Range Extractor
540. Range of Integers in an Unsorted String
541. Range Parser
542. Ranking Poker Hands
543. Rational Zeros
544. RDS (Radio Data System) Splash Text Concatenation
545. Read a UPC/Barcode
546. Read a UPC/Barcode Part 2
547. Recaman Sequence
548. Recover a secret string from random triplets
549. Recovering from a Disk Crash - Reverse Engineering Some Lost Code!
550. Rectangle Cipher Puzzle
551. Rectangular Subsets of Tiles in Square Grids (Fixed)
552. Recursion puzzle
553. Regex for a decimal number divisible by 4
554. Regex for Gregorian date validation
555. Regex to Match Significant Figures
556. Regexp basics - parsing mana cost
557. RegExp Fun #1 - When I miss few days of gym
558. Regular expression for binary numbers divisible by 5
559. Regular Expressions (groups): Splitting phone numbers into their separate parts.
560. Relatively Prime Numbers
561. Remember members decorator
562. Retirement Planning as a Service
563. Reverse a singly-linked list
564. Reverse Inside Parentheses (Inside Parentheses)
565. Reverse polish notation calculator
566. Reverse Polish Notation solver (Easy)
567. Reversi row rudiments
568. riemann sums II (trapezoidal rule)
569. Right Truncatable Harshad numbers
570. RoboScript #2 - Implement the RS1 Specification
571. RoboScript #3 - Implement the RS2 Specification
572. RoboScript #4 - RS3 Patterns to the Rescue
573. Roman numerals, Zeroes and Fractions
574. ROT13 variant cipher
575. Rotate Array (JS)
576. Rotate Corners
577. Rotated string
578. Rotational energy levels
579. Rotational state populations (the Boltzmann distribution)
580. Rotten Oranges
581. Round by 0.5 steps
582. RPG dice roller
583. RPS Knockout Tournament Winner
584. Rubiks cube CFOP algo : Cross
585. Rudimentary Pivot Table
586. Rule 30
587. Russian Peasant Multiplication
588. Sales report
589. Same Birthday Probability
590. Sat Nav directions
591. Save for retirement
592. Schedulability Test
593. School Class Arrangement
594. Searching for Bulls
595. Seat Allocation Double Dutch
596. Secret Agent Time Travel Calculations
597. Secret knock
598. Selective memory
599. Self-closing Cookie Jar
600. Semi-Thue Systems - The Word Problem [Part 1]
601. Sentence to words
602. Separate filename from extension
603. Sequence generator
604. Seventh JSON of a seventh JSON
605. Shakespearean Tug of War
606. Shallowest path across the river
607. Shelve your trophies
608. Shifted cycles
609. Shorten IPv6 Address
610. Shortest string
611. Shortest string that contains all possible bigrams from set of characters
612. Sierpinski triangle
613. Simple Barcode Scanner
614. Simple elevator
615. Simple Encryption #2 - Index-Difference
616. Simple Encryption #4 - Qwerty
617. Simple Events
618. Simple eviternity numbers
619. Simple Finite State Machine Compiler
620. Simple Fun #134: Fix Progression
621. Simple Fun #139: Black And White
622. Simple Fun #148: Exchange Sort
623. Simple Fun #149: Next Day Of Week
624. Simple Fun #153: Knight Rescue
625. Simple Fun #167: Spreadsheet
626. Simple Fun #170: Sum Groups
627. Simple Fun #178: Faulty Odometer
628. Simple Fun #188: Slogans
629. Simple Fun #201: Cards And Pero
630. Simple Fun #26: Weak Numbers
631. Simple Fun #283: Censor The Forbidden Words
632. Simple Fun #299: Look And Say And Sum
633. Simple Fun #335: Two Programmers And Gold
634. Simple Fun #342: Buy Newspaper
635. Simple Fun #387: Lonely Frog IV
636. Simple Fun #55: Cyclic String
637. Simple Fun #62: Draw Rectangle
638. Simple Fun #89: Boxes Packing
639. Simple Interactive Interpreter
640. Simple max digit sum
641. Simple maze
642. Simple non-decreasing array
643. Simple number divisibility
644. Simple palindrome game
645. Simple parenthesis removal
646. Simple Pig Latin
647. Simple repeated words
648. Simple Socket Client
649. Simple string matching
650. Simple Substitution Cipher Helper
651. Simple Sum (with restrictions)
652. Simple Web Framework #1: Create a basic router
653. Simpler Interactive Interpreter
654. Simplexer
655. Simplifying multilinear polynomials
656. Simulating Collective Behaviour with Linear Threshold Model
657. Simultaneous Equations - Three Variables
658. Single Word Pig Latin
659. Sleigh Authentication
660. So Easy: Charge time calculation
661. So many kinds of numbers!
662. Social Golfer Problem Validator
663. Social Golfer Problem Validator V2
664. Socialist distribution
665. socket guessing game client
666. Solve the Grid! Binary Toggling Puzzle
667. Some Circles
668. Some Tips For Quality Control I
669. Sophie Germain primes
670. Sort a massive list of strings (hard)
671. Sort only integers in Nested List
672. Sort the comments!
673. Sortable Poker Hands
674. Sortable Shapes
675. Sorting Poker
676. Sorting Time
677. Space Invaders Underdog
678. Spanish class help
679. Speed Control
680. Spelling Bee II
681. SPF Russia
682. Spidey Swings Across Town
683. Spinning Rings - Fidget Spinner Edition
684. Split string by multiple delimiters
685. Split Without Loss
686. Splitting the Workload (part II)
687. Sports league table - help your local team!
688. Spreadsheet Cell Name Conversions
689. Spy Agent
690. Spy games - rebuild your decoder
691. Squad number generator
692. Square sums (simple)
693. Stack Arithmetic Machine
694. Stop the loop after n seconds
695. Strange roman numbers
696. String counting
697. String Pyramid
698. String searching with wildcard
699. String Shortener (shrink)
700. String subpattern recognition III
701. String to integer conversion
702. Strip Url Params
703. Sub-array division
704. Subsequence Product Sum
705. Subset Sum Problem
706. Sudoku Solver
707. Sum and Multiply
708. Sum of certain products
709. Sum of certain products II
710. Sum of dices
711. Summing subsets in list
712. Sungka
713. Supernatural
714. Swap items in a dictionary
715. Swap Row In Certain Columns of a Matrix
716. Symbolic differentiation of prefix expressions
717. T.T.T.#2: Equal to 24
718. Task master
719. Terrible Exception Handling
720. Tetris Series #2 — Primitive Gameplay
721. Texas Hold'em Hands
722. The Chakitra's language
723. The cross-stitch Kata
724. The Enigma Machine - Part 2: A Rotor
725. The Enigma Machine - Part 3: The Reflector
726. The Enigma Machine - Part 4: A Rotor Part II
727. The most asked question on CodeWars
728. The Seven Bridges of Königsberg
729. Tic-Tac-Toe Checker
730. Time For Validation
731. Traffic lights
732. Train of dominoes
733. Triangulate a konvex polygon
734. Tug-o'-War
735. Twice Their Age
736. Two Sets of Equal Sum
737. Understanding epidemic.
738. Unicode Math
739. Vanilla Neural Network from scratch
740. Vanity Plates
741. Watchmaker problems - watch hands issue
742. Where am I again?