Problems

Note that you can solve most task in any order!
Already solved ones are at the bottom of the table.

Volume: Puzzles - total 111 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
24	Neumann's Random Generator	DE ES RU		5053	5.28
59	Bulls and Cows			3162	6.09
22	Two Printers	ES RU		3366	5.99
69	Fibonacci Divisibility			2041	6.85
62	Prime Ranges			1795	7.08
80	Duel Chances			1248	7.71
36	Code Guesser	UA		1341	7.58
54	Pythagorean Triples			1160	7.84
97	Girls and Pigs			935	8.21
51	Dungeons and Dragons Dice	UA		891	8.29
66	Caesar Cipher Cracker			778	8.53
108	Star Medals			634	8.88
71	Fibonacci Divisibility Advanced			610	8.95
89	Instrument Tuner			508	9.27
131	Four Pics One Word			406	9.66
476	Prime Vowel Count		csfpython	21	14.72
140	Proper Bracket Sequences			271	10.36
173	Chords of Music			220	10.72
472	Unreachable Amounts		csfpython	15	15.28
129	Enumerating Combinations			221	10.71
151	Word Ladders			201	10.87
139	Beam Balance and Masses			204	10.85
111	Necklace Count			197	10.91
192	Gangster Battles			148	11.40
110	Lucky Tickets Advanced			186	11.01
179	Look and Say binary			129	11.64
157	Emirp primE			122	11.73
359	Find 3 Numbers		csfpython	48	13.33
459	Number String Multiples of Thirteen		csfpython	12	15.64
463	Crossing Towns		csfpython	10	15.93
372	String Minimization			40	13.64
100	Crossing the Road			127	11.67
384	Equal Hamming Distance		csfpython	33	13.97
427	Cheapest Bus Tickets			19	14.89
458	Mountain Panorama		csfpython	10	15.93
210	Ticket Puzzle			80	12.46
209	Suffix Array Advanced			79	12.48
113	Ground Zero			102	12.04
434	A Crime on Logic Island Advanced		csfpython	15	15.28
274	Two Buckets			56	13.07
107	Knight's Tour			93	12.20
259	Easter Bunnies		gardengnome	55	13.10
241	Village Ways			59	12.98
381	Finding Squares		csfpython	26	14.37
175	Algae Robot			73	12.62
218	Rain Must Fall	DE		57	13.04
204	Wandering Star			59	12.98
292	Factorial Trailing Zeroes			40	13.64
149	Prime Chains			67	12.76
255	LCM of a range			46	13.41
421	Princess and Tiger			13	15.51
307	The Problem of Too Many Clues		zelevin	33	13.97
423	Russian Dolls		csfpython	12	15.64
180	Simple Game of Sticks			54	13.13
450	Bead Games		csfpython	7	16.48
379	Dice with Infinity Sides		telebashna	19	14.89
247	Towers of Hanoi			41	13.60
439	Power Sum of Digits		csfpython	8	16.28
420	Life on a String		csfpython	11	15.78
426	Weighted Sum of Digits 2		csfpython	10	15.93
451	Maximize Toy Production		csfpython	6	16.71
347	Unwanted Multiples		csfpython	21	14.72
338	Throwing Easter Eggs		gardengnome	22	14.65
354	Too Many Divisors		csfpython	19	14.89
409	Election Fever		csfpython	11	15.78
405	Three Friendly Knights		csfpython	11	15.78
389	Binary Split Guessing Game		csfpython	13	15.51
346	Long Decimal Fractions		csfpython	18	14.98
432	Ball Bearing Collisions		csfpython	7	16.48
287	Palindrome Frog		csfpython	25	14.43
217	Personality Swap			33	13.97
340	Zeckendorf Lite		csfpython	18	14.98
339	Parking Lot			18	14.98
261	Easter Bunnies 2D		gardengnome	27	14.31
462	Rota Boards		csfpython	3	17.69
393	Urban Planning		csfpython	11	15.78
417	Unfortunate Bubble Sort		gardengnome	8	16.28
415	Smallest Message		gardengnome	8	16.28
295	Vigenere Cipher Cracker			21	14.72
395	Growth of Micro-Organisms		csfpython	10	15.93
271	A Knight some Trolls and a Princess		csfpython	23	14.57
382	Die Throw Sequences		csfpython	11	15.78
398	Collecting Diamonds		csfpython	9	16.09
383	E2C2S - try harder!		gardengnome	10	15.93
424	New Towers of Hanoi		csfpython	6	16.71
419	Special Digits		csfpython	6	16.71
341	Zeckendorf Advanced		csfpython	13	15.51
402	Game of Stones		csfpython	7	16.48
413	Tree Painting		csfpython	6	16.71
222	Easter Eggs Advanced			22	14.65
266	Pancake Sorting			18	14.98
263	Easter Bunnies 3D		gardengnome	18	14.98
410	Village Door Shuffle		csfpython	6	16.71
262	Easter Bunnies 2D Advanced		gardengnome	18	14.98
422	Mabinogion Sheep		moxieman	5	16.98
221	XWords		quandray	21	14.72
235	Train Merge Advanced			19	14.89
391	Scout Proficiency Badges		csfpython	7	16.48
430	Cutting Paper		csfpython	4	17.30
279	Two Buckets Advanced		csfpython	15	15.28
365	Flower Border Arrangements		csfpython	8	16.28
333	Happy Triplets			10	15.93
237	Road Network Destruction			16	15.17
264	Party Presents		csfpython	14	15.39
327	Dobbin's Long Journey		csfpython	9	16.09
373	Railroad Rat		csfpython	6	16.71
215	Klotski	SK		13	15.51
280	Three Buckets Re-visited		csfpython	9	16.09
226	Multiplicative Persistence Backtrace			11	15.78
232	Shift Register Randomizer			10	15.93
240	Playfair Cipher Cracking			9	16.09