User: CSFPython

Position: #2 (among top 0.0%)
Rank ?: beholder

Tasks solved: 397
of them for certificate: 290

Country: United Kingdom (Great Britain)

Relations   (details)
Is befriended by 8 users
and made friendship with 0 users

Registered: Nov 4 2020
Last visit: Apr 26 2024 19:34



 

I most recently worked as a part-time administrator at a local school. I am now retired, aged 70 (2021).

From an early age I have been fascinated by the solution of puzzles. I taught myself programming as an additional tool for solving puzzles. Since then this has been one of my main hobbies.

Awards, Diplomas etc (how to win them?):

Certificate of Benefactor granted on Mar 14 2021


Solutions list
(view saved unsuccessful solutions)
Note: you can not view solutions of tasks which you have not yet solved yourself!
# Title Language Solution Date
1 Sum "A+B" Python view
Nov 4 2020
2 Sum in Loop Python view
Nov 5 2020
3 Sums in Loop Python view
Nov 5 2020
4 Minimum of Two Python view
Nov 5 2020
5 Minimum of Three Python view
Nov 5 2020
6 Rounding Python view
Nov 5 2020
7 Fahrenheit to Celsius Python view
Nov 5 2020
8 Arithmetic Progression Python view
Nov 5 2020
9 Triangles Python view
Nov 5 2020
10 Linear Function Python view
Nov 5 2020
11 Sum of digits Python view
Nov 5 2020
12 Modulo and time difference Python view
Nov 5 2020
13 Weighted sum of digits Python view
Nov 5 2020
14 Modular Calculator Python view
Nov 5 2020
15 Maximum of array Python view
Nov 5 2020
16 Average of an array Python view
Nov 5 2020
17 Array Checksum Python view
Nov 5 2020
18 Square Root Python view
Nov 5 2020
19 Matching Brackets Python view
Nov 5 2020
20 Vowel Count Python view
Nov 5 2020
21 Array Counters Python view
Nov 5 2020
22 Two Printers Python view
Nov 5 2020
23 Bubble in Array Python view
Nov 5 2020
24 Neumann's Random Generator Python view
Nov 5 2020
25 Linear Congruential Generator Python view
Nov 6 2020
26 Greatest Common Divisor Python view
Nov 6 2020
27 Bubble Sort Python view
Nov 6 2020
28 Body Mass Index Python view
Nov 6 2020
29 Sort with Indexes Python view
Nov 6 2020
30 Reverse String Python view
Nov 6 2020
31 Rotate String Python view
Nov 6 2020
32 Josephus Problem Python view
Nov 6 2020
33 Parity Control Python view
Nov 6 2020
34 Binary Search Python view
Nov 6 2020
35 Savings Calculator Python view
Nov 6 2020
36 Code Guesser Python view
Nov 6 2020
37 Mortgage Calculator Python view
Nov 6 2020
38 Quadratic Equation Python view
Nov 7 2020
39 Share Price Volatility Python view
Nov 7 2020
40 Paths in the Grid Python view
Nov 7 2020
41 Median of Three Python view
Nov 7 2020
42 Blackjack Counting Python view
Nov 7 2020
43 Dice Rolling Python view
Nov 7 2020
44 Double Dice Roll Python view
Nov 7 2020
45 Cards Shuffling Python view
Nov 7 2020
46 Tic-Tac-Toe Python view
Nov 7 2020
47 Caesar Shift Cipher Python view
Nov 7 2020
48 Collatz Sequence Python view
Nov 7 2020
49 Rock Paper Scissors Python view
Nov 7 2020
50 Palindromes Python view
Nov 7 2020
51 Dungeons and Dragons Dice Python view
Nov 7 2020
52 Pythagorean Theorem Python view
Nov 8 2020
53 King and Queen Python view
Nov 8 2020
54 Pythagorean Triples Python view
Nov 8 2020
55 Matching Words Python view
Nov 8 2020
56 Life is Simple Python view
Nov 8 2020
57 Smoothing the Weather Python view
Nov 8 2020
58 Card Names Python view
Nov 8 2020
59 Bulls and Cows Python view
Nov 8 2020
60 Sweet Harvest Python view
Nov 8 2020
61 Prime Numbers Generation Python view
Nov 8 2020
62 Prime Ranges Python view
Nov 8 2020
63 Integer Factorization Python view
Nov 8 2020
64 Maze Pathfinder Python view
Nov 8 2020
65 Transitive Closure on Candy States Python view
Nov 8 2020
66 Caesar Cipher Cracker Python view
Nov 8 2020
67 Fibonacci Sequence Python view
Nov 8 2020
68 Bicycle Race Python view
Nov 8 2020
69 Fibonacci Divisibility Python view
Nov 8 2020
70 Most Frequent Word Python view
Nov 8 2020
71 Fibonacci Divisibility Advanced Python view
Nov 8 2020
72 Funny Words Generator Python view
Nov 8 2020
73 Hexagonal Grid Python view
Nov 8 2020
74 Clock Hands Python view
Nov 9 2020
75 Yacht or Dice Poker Python view
Nov 9 2020
76 Pawn Move Validator Python view
Nov 9 2020
77 Point to Segment Distance Python view
Nov 9 2020
78 Bezier Curves Python view
Nov 9 2020
79 Cycles Detection Python view
Nov 9 2020
80 Duel Chances Python view
Nov 9 2020
81 Bit Count Python view
Nov 9 2020
82 Levenshtein Distance Python view
Nov 9 2020
83 Graph Generator Python view
Nov 9 2020
84 Dijkstra in the Network Python view
Nov 10 2020
85 Rotation in 2D Space Python view
Nov 10 2020
86 Brainfuck Interpreter Python view
Nov 10 2020
87 Tree Builder Python view
Nov 10 2020
88 Pitch and Notes Python view
Nov 10 2020
89 Instrument Tuner Python view
Nov 10 2020
90 Lexicographic Permutations Python view
Nov 10 2020
91 Game of 2048 Python view
Nov 10 2020
92 Binary Heap Python view
Nov 10 2020
93 Starving Priority Queue Python view
Nov 10 2020
94 Fool's Day 2014 Python view
Nov 10 2020
95 Simple Linear Regression Python view
Nov 10 2020
96 Snake Arcade Python view
Nov 11 2020
97 Girls and Pigs Python view
Nov 11 2020
98 Azimuth at Treasure Island Python view
Nov 11 2020
99 Uphill Shooting Python view
Nov 11 2020
100 Crossing the Road Python view
Nov 11 2020
101 Gradient Calculation Python view
Nov 11 2020
102 Travelling Salesman Python view
Nov 11 2020
103 Easter Eggs Python view
Nov 11 2020
104 Triangle Area Python view
Nov 11 2020
105 Convex Polygon Area Python view
Nov 11 2020
106 Random Search Optimization Python view
Nov 11 2020
107 Knight's Tour Python view
Nov 13 2020
108 Star Medals Python view
Nov 13 2020
109 Lucky Tickets Python view
Nov 13 2020
110 Lucky Tickets Advanced Python view
Nov 13 2020
111 Necklace Count Python view
Nov 13 2020
112 Travelling Salesman Inverted Python view
Nov 13 2020
113 Ground Zero Python view
Nov 14 2020
114 Tricky Printing Brainfuck view
Nov 17 2020
115 Gradient Descent for SLE Python view
Nov 18 2020
116 Summing Up Brainfuck view
Nov 18 2020
117 Divide by Two Brainfuck view
Nov 18 2020
119 Brain Fibo Brainfuck view
Nov 20 2020
118 Maxit Single-Player Python view
Nov 21 2020
128 Combinations Counting Python view
Nov 21 2020
120 Selection Sort Python view
Nov 21 2020
121 Insertion Sort Python view
Nov 21 2020
171 Tree Height Measurement Python view
Nov 21 2020
127 Anagrams Python view
Nov 21 2020
134 Flying Text Screensaver Python view
Nov 21 2020
156 Luhn Algorithm Python view
Nov 21 2020
172 Cloud Altitude Measurement Python view
Nov 21 2020
135 Variable Length Code Python view
Nov 21 2020
122 QuickSort Python view
Nov 21 2020
145 Modular Exponentiation Python view
Nov 21 2020
181 Reverse Polish Notation Python view
Nov 21 2020
143 Extended Euclidean Algorithm Python view
Nov 23 2020
131 Four Pics One Word Python view
Nov 23 2020
126 Sequence of Squares Brainfuck view
Nov 23 2020
207 Suffix Array Python view
Nov 23 2020
136 Variable Length Code Unpack Python view
Nov 23 2020
211 Information Entropy Python view
Nov 23 2020
191 Spaceship Weight Fraud Python view
Nov 23 2020
167 Copy Line Brainfuck view
Nov 23 2020
168 Caesar meets BF Brainfuck view
Nov 25 2020
206 Base-32 Encoding Python view
Nov 25 2020
170 Binary Search in Array Python view
Nov 25 2020
154 Breadth First Search Python view
Nov 25 2020
133 Billiard Ball Python view
Nov 25 2020
155 Depth First Search Python view
Nov 25 2020
144 Modular Inverse Python view
Nov 25 2020
161 Topological Sorting Python view
Nov 25 2020
165 Safe Landing Python view
Nov 25 2020
210 Ticket Puzzle Python view
Nov 26 2020
174 Calculation of Pi Python view
Nov 26 2020
125 Bogosort Python view
Nov 26 2020
123 Knapsack of Integers Python view
Nov 27 2020
130 Combinations with Repetitions Python view
Nov 27 2020
140 Proper Bracket Sequences Python view
Nov 27 2020
129 Enumerating Combinations Python view
Nov 27 2020
146 Color Cubes Python view
Nov 27 2020
138 Huffman Coding Python view
Nov 27 2020
151 Word Ladders Python view
Nov 27 2020
173 Chords of Music Python view
Nov 27 2020
139 Beam Balance and Masses Python view
Nov 28 2020
164 Page Rank Python view
Nov 28 2020
152 RSA Cryptography Python view
Nov 28 2020
137 Shannon-Fano Coding Python view
Nov 28 2020
184 Matches Picking Python view
Nov 28 2020
194 Convex Hull and Farmers Python view
Nov 28 2020
148 Public Key Cryptography Intro Python view
Nov 29 2020
124 Knapsack Backtracking Python view
Nov 29 2020
162 Rubik's Cube Python view
Nov 29 2020
201 Point in Polygon Python view
Nov 29 2020
192 Gangster Battles Python view
Nov 29 2020
208 Neighborhood of a String Python view
Nov 30 2020
158 Hamming Codes Python view
Nov 30 2020
179 Look and Say binary Python view
Nov 30 2020
202 Dancing Pairs Python view
Nov 30 2020
157 Emirp primE Python view
Nov 30 2020
159 Hard Life Python view
Nov 30 2020
182 Frodo and Black Riders Python view
Nov 30 2020
153 Fermat goes hacking RSA Python view
Dec 1 2020
185 Simple 3D Scene Python view
Dec 1 2020
186 Simple 3D Scene (cont) Python view
Dec 1 2020
141 Sliding Window Search Python view
Dec 2 2020
142 LZ77 decompression Python view
Dec 2 2020
214 Sick Travellers Python view
Dec 2 2020
132 Stream Cipher Breaking Python view
Dec 2 2020
166 Page Rank as Eigenvector Python view
Dec 2 2020
193 Maximum Flow Python view
Dec 3 2020
175 Algae Robot Python view
Dec 3 2020
209 Suffix Array Advanced Python view
Dec 3 2020
203 Tic-Tac-Toe Minimax Algorithm Python view
Dec 4 2020
163 Colliding Balls Python view
Dec 4 2020
149 Prime Chains Python view
Dec 5 2020
205 Clustering the Stars Python view
Dec 5 2020
204 Wandering Star Python view
Dec 5 2020
180 Simple Game of Sticks Python view
Dec 6 2020
169 Automated Landing Python view
Dec 7 2020
216 Cracking Linear Congruential Generator Python view
Dec 7 2020
219 Neural Network Calculation Python view
Dec 7 2020
218 Rain Must Fall Python view
Dec 7 2020
215 Klotski Python view
Dec 9 2020
217 Personality Swap Python view
Dec 10 2020
220 Neural Network Training Python view
Dec 11 2020
150 Introducing Regexps RegExp view
Dec 11 2020
176 Say 100 Python view
Dec 11 2020
177 Nim Game Python view
Dec 12 2020
178 Maze of the Wumpus Python view
Dec 14 2020
183 Connect Four Python view
Dec 16 2020
147 Color Cubes Advanced Python view
Dec 24 2020
195 Mul Two Asm4004 view
Dec 27 2020
197 Loops in Assembly Asm4004 view
Dec 28 2020
198 Prn Hex Str Asm4004 view
Dec 29 2020
196 Fibonacci Randomizer Asm4004 view
Dec 29 2020
200 Fizz Buzz in Asm Asm4004 view
Dec 30 2020
212 BCD to Hex Asm4004 view
Jan 1 2021
213 Micro-Life Asm4004 view
Jan 4 2021
160 Social Web Scraper Python view
Jan 5 2021
187 Static Web Page Python view
Jan 5 2021
188 Basics of HTML Python view
Jan 6 2021
189 Dynamic Web Page Python view
Jan 6 2021
199 Employees Web App Python view
Jan 6 2021
190 Query String Parameters Python view
Jan 7 2021
221 XWords Python view
Jan 8 2021
222 Easter Eggs Advanced Python view
Jan 26 2021
226 Multiplicative Persistence Backtrace Python view
Mar 13 2021
223 Introducing Scheme Scheme view
Mar 13 2021
225 Hamurabi Scheme view
Mar 13 2021
227 Hashtable Implementation Scheme view
Mar 15 2021
224 Transposing List of Lists Scheme view
Mar 16 2021
228 Maze Mapping Robot Scheme view
Mar 24 2021
230 Move-To-Front Transform Python view
Mar 29 2021
229 Burrows-Wheeler Transform Python view
Mar 29 2021
231 Dice Black Jack Scheme view
Apr 15 2021
232 Shift Register Randomizer Python view
Apr 28 2021
233 Language Study Python view
Jul 5 2021
236 Is the Earth Flat Python view
Sep 13 2021
237 Road Network Destruction Python view
Oct 2 2021
238 Bear Hunt Python view
Oct 6 2021
239 Foxes and Geese Python view
Oct 13 2021
235 Train Merge Advanced Python view
Oct 16 2021
240 Playfair Cipher Cracking Python view
Nov 9 2021
234 Train Merge Python view
Nov 9 2021
242 Comment Stripper Python view
Nov 27 2021
241 Village Ways Python view
Nov 27 2021
243 Grille Encryption Python view
Nov 28 2021
244 Introducing SQL SQL view
Dec 4 2021
245 Aggregations in SQL SQL view
Dec 4 2021
246 Joins in SQL SQL view
Dec 14 2021
248 Christmas Puzzle Brainfuck view
Dec 25 2021
247 Towers of Hanoi Python view
Dec 25 2021
249 Turing Increment Turing Machine view
Dec 28 2021
250 Turing Clone Turing Machine view
Dec 28 2021
251 Radio Spies Python view
Dec 31 2021
252 Shadok and Gibis Python view
Jan 6 2022
253 Beautiful Line Chart Python view
Jan 6 2022
254 Rule 30 by Turing Turing Machine view
Jan 6 2022
256 Rook Jump Maze Python view
Jan 10 2022
257 Missing Records in SQL SQL view
Jan 16 2022
258 Text Justification Python view
Jan 20 2022
259 Easter Bunnies Python view
Jan 29 2022
261 Easter Bunnies 2D Python view
Jan 31 2022
262 Easter Bunnies 2D Advanced Python view
Jan 31 2022
263 Easter Bunnies 3D Python view
Feb 3 2022
255 LCM of a range Python view
Feb 10 2022
260 Low Cost Road Network Python view
Feb 10 2022
265 Update in SQL SQL view
Feb 18 2022
266 Pancake Sorting Python view
Feb 28 2022
267 Turing Maze Turing Machine view
Mar 7 2022
268 Logic Transformation Python view
Mar 14 2022
269 Fibonacci coding Python view
Mar 15 2022
270 Hexlife Python view
Mar 19 2022
264 Party Presents Python view
Mar 20 2022
272 Hexplore Python view
Mar 29 2022
273 Logic Glitches Python view
Apr 2 2022
275 Three Buckets Python view
Apr 12 2022
274 Two Buckets Python view
Apr 12 2022
276 Lucky Pairs C# view
Apr 19 2022
277 The Adventure of Morse Code Python view
Apr 23 2022
278 Polyomino Generation Python view
May 3 2022
281 Basic Tokenizer Python view
May 13 2022
271 A Knight some Trolls and a Princess Python view
May 13 2022
279 Two Buckets Advanced Python view
May 20 2022
284 Rotate Array In-Place BASIC view
Jun 2 2022
285 Rotate Matrix In Place BASIC view
Jun 2 2022
286 Self-Printing Program BASIC view
Jun 2 2022
289 The Case of the Desperate Mastermind C# view
Jul 20 2022
282 Predictable Board Game Python view
Jul 20 2022
290 Every Leaf on Every Tree Python view
Aug 1 2022
291 Squirrels vs. Acorns Python view
Aug 9 2022
292 Factorial Trailing Zeroes Python view
Aug 10 2022
293 Sums of Triplets Python view
Aug 10 2022
294 Vigenere Cipher Python view
Aug 11 2022
295 Vigenere Cipher Cracker Python view
Aug 11 2022
297 Collatz in the Range Python view
Aug 15 2022
296 Tree Value Python view
Aug 15 2022
298 Revoltle Python view
Aug 16 2022
299 Tree Visualizer Python view
Aug 19 2022
300 Run-Length Encoding Python view
Aug 20 2022
301 Skyscraper Price Python view
Aug 21 2022
302 Sound-Controlled Robot Python view
Aug 21 2022
303 Towers Under Cover Python view
Aug 23 2022
306 Line Drawing Algorithm BASIC view
Sep 7 2022
305 The Catacombs of Chronos Python view
Sep 7 2022
307 The Problem of Too Many Clues Python view
Sep 7 2022
287 Palindrome Frog Python view
Sep 7 2022
308 Circle Drawing Algorithm BASIC view
Sep 9 2022
311 The Mirror Maze Python view
Sep 26 2022
312 The Shredder Conundrum Python view
Oct 2 2022
313 Seven Segment Decoder Other view
Oct 10 2022
314 The Sorites Solution Python view
Oct 16 2022
288 Langton's Ant Python view
Oct 16 2022
316 Apogee Python view
Oct 29 2022
317 Launch to Orbit BASIC view
Nov 4 2022
318 Launch to Orbit automated BASIC view
Nov 15 2022
315 Count the Common Factors Python view
Nov 15 2022
320 Accordion Python view
Nov 23 2022
322 Gray Decoder Other view
Dec 10 2022
324 Merge Sort Python view
Dec 27 2022
325 Ultimate Sort Trial BASIC view
Dec 28 2022
326 Sum Them Forth Forth view
Jan 3 2023
323 Next Palindrome Python view
Jan 3 2023
328 Beep Beep Beep BASIC view
Jan 14 2023
329 Roman Arithmetic Python view
Feb 18 2023
330 Easter Bunnies Are Back Python view
Feb 19 2023
332 Easter Bunnies 2D Are Back Python view
Feb 19 2023
333 Happy Triplets Python view
Mar 6 2023
335 Venus Visible Python view
Mar 12 2023
309 Board Game Sequences Python view
Mar 12 2023
336 Currency Arbitrage C# view
Mar 22 2023
334 Find all of the SETs Python view
Mar 31 2023
338 Throwing Easter Eggs Python view
Apr 1 2023
339 Parking Lot Python view
Apr 3 2023
331 Rotating Toy Display Python view
Apr 3 2023
337 Introducing Zeckendorf Python view
Apr 14 2023
342 Adaptive Arithmetic Coding Python view
Apr 30 2023
343 Village of Ticks Python view
Apr 30 2023
344 Throwing Easter Eggs Part 2 Python view
May 2 2023
345 Elliptic Curves Basics Python view
May 11 2023
340 Zeckendorf Lite Python view
May 30 2023
349 Burrows Python view
Jun 2 2023
348 Trick-Taking Game Python view
Jun 5 2023
350 Colourful Egg Sequences Python view
Jun 8 2023
351 Nicomachus Python view
Jun 9 2023
352 Hurkle Lua view
Jun 14 2023
353 Hurkle Hunter Lua view
Jun 14 2023
319 Tower of Hanoi Rules Python view
Jun 14 2023
310 Board Game Sequences Advanced Python view
Jun 15 2023
346 Long Decimal Fractions Python view
Jun 16 2023
354 Too Many Divisors Python view
Jun 22 2023
355 Robots Game Lua view
Jun 22 2023
356 Robots Game Autoplay Lua view
Jun 24 2023
357 Ulam's Prime Spiral Python view
Jun 27 2023
358 Mandelbrot Set Lua view
Jun 28 2023
359 Find 3 Numbers Python view
Jul 18 2023
361 Rogue Mazes Python view
Jul 24 2023
360 Whisky Blending Python view
Jul 24 2023
362 Euclid, Manhattan and Chebyshev Python view
Jul 27 2023
363 Language Detector Lua view
Aug 2 2023
341 Zeckendorf Advanced Python view
Aug 2 2023
364 Arthur Engel's Randomizer Python view
Aug 4 2023
366 Image Cutting Python view
Aug 13 2023
368 Number Base Palindrome Python view
Aug 27 2023
367 Roguelike 1d C# view
Sep 4 2023
283 Predictable Board Game on 10 Boards Python view
Sep 4 2023
369 Flappy Bird Python view
Sep 9 2023
347 Unwanted Multiples Python view
Sep 9 2023
371 Pages to Print Python view
Sep 21 2023
372 String Minimization Python view
Sep 22 2023
370 Jewels Lua view
Sep 23 2023
374 Longest Common Subsequence Python view
Sep 27 2023
375 Space Invaders Lua view
Oct 2 2023
377 Sum of Digits Divisibility Python view
Oct 5 2023
376 Cartesian Tree Visualization Python view
Oct 6 2023
379 Dice with Infinity Sides Python view
Oct 13 2023
380 Treap Study Python view
Oct 16 2023
378 Space Invaders Automation Lua view
Oct 18 2023
381 Finding Squares Python view
Oct 26 2023
383 E2C2S - try harder! Python view
Oct 26 2023
385 Number of steps in Euclidean Algorithm Python view
Nov 12 2023
304 Ordered Brackets Python view
Nov 12 2023
386 Advent Calendar Chocolate Python view
Nov 19 2023
384 Equal Hamming Distance Python view
Nov 19 2023
388 Fibonacci Guessing Game Python view
Dec 13 2023
390 Card Pairing Solitaire Python view
Dec 23 2023
389 Binary Split Guessing Game Python view
Jan 1 2024
392 Fixing an Anagram Python view
Jan 8 2024
393 Urban Planning Python view
Feb 15 2024
396 Chocolate Triangles and BF Brainfuck view
Feb 22 2024
397 Trading Bot Python view
Feb 28 2024
399 Methane Identification Python view
Mar 10 2024
382 Die Throw Sequences Python view
Mar 10 2024
400 Memory Check Python view
Mar 13 2024
401 Methane Rotation C# view
Mar 21 2024
403 Hi-Lo dice game Python view
Mar 28 2024
404 Methane Normalization C# view
Apr 3 2024
406 Wormholes of Cygnus Python view
Apr 18 2024
405 Three Friendly Knights Python view
Apr 18 2024
407 River Labyrinth Python view
Apr 23 2024
408 Mad Beaver in River Labyrinth Python view
Apr 26 2024