Problems

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

Volume: Puzzles - total 104 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
24	Neumann's Random Generator	DE ES RU		4744	5.27
59	Bulls and Cows			2942	6.10
22	Two Printers	ES RU		3120	6.00
69	Fibonacci Divisibility			1909	6.85
62	Prime Ranges			1668	7.09
80	Duel Chances			1166	7.71
36	Code Guesser	UA		1213	7.64
54	Pythagorean Triples			1071	7.86
97	Girls and Pigs			869	8.22
51	Dungeons and Dragons Dice	UA		821	8.32
66	Caesar Cipher Cracker			726	8.53
108	Star Medals			608	8.84
71	Fibonacci Divisibility Advanced			561	8.98
89	Instrument Tuner			472	9.28
131	Four Pics One Word			394	9.59
140	Proper Bracket Sequences			256	10.34
434	A Crime on Logic Island Advanced		csfpython	11	15.66
173	Chords of Music			198	10.78
151	Word Ladders			196	10.80
427	Cheapest Bus Tickets			13	15.39
129	Enumerating Combinations			201	10.76
139	Beam Balance and Masses			188	10.87
192	Gangster Battles			140	11.38
111	Necklace Count			180	10.95
110	Lucky Tickets Advanced			170	11.04
432	Ball Bearing Collisions		csfpython	7	16.36
423	Russian Dolls		csfpython	11	15.66
179	Look and Say binary			121	11.63
372	String Minimization			33	13.85
359	Find 3 Numbers		csfpython	38	13.61
439	Power Sum of Digits		csfpython	3	17.57
157	Emirp primE			115	11.72
421	Princess and Tiger			10	15.81
420	Life on a String		csfpython	10	15.81
384	Equal Hamming Distance		csfpython	23	14.46
426	Weighted Sum of Digits 2		csfpython	7	16.36
381	Finding Squares		csfpython	22	14.53
100	Crossing the Road			116	11.70
209	Suffix Array Advanced			71	12.55
210	Ticket Puzzle			70	12.57
113	Ground Zero			94	12.07
274	Two Buckets			45	13.33
405	Three Friendly Knights		csfpython	10	15.81
409	Election Fever		csfpython	9	15.98
175	Algae Robot			67	12.65
107	Knight's Tour			82	12.30
259	Easter Bunnies		gardengnome	45	13.33
241	Village Ways			48	13.22
389	Binary Split Guessing Game		csfpython	13	15.39
204	Wandering Star			55	12.98
292	Factorial Trailing Zeroes			33	13.85
218	Rain Must Fall	DE		49	13.18
430	Cutting Paper		csfpython	3	17.57
149	Prime Chains			61	12.81
379	Dice with Infinity Sides		telebashna	13	15.39
393	Urban Planning		csfpython	10	15.81
413	Tree Painting		csfpython	6	16.60
307	The Problem of Too Many Clues		zelevin	26	14.25
417	Unfortunate Bubble Sort		gardengnome	5	16.86
180	Simple Game of Sticks			48	13.22
415	Smallest Message		gardengnome	5	16.86
398	Collecting Diamonds		csfpython	8	16.16
347	Unwanted Multiples		csfpython	17	14.96
338	Throwing Easter Eggs		gardengnome	18	14.86
255	LCM of a range			32	13.90
354	Too Many Divisors		csfpython	15	15.16
395	Growth of Micro-Organisms		csfpython	8	16.16
382	Die Throw Sequences		csfpython	10	15.81
247	Towers of Hanoi			31	13.96
402	Game of Stones		csfpython	6	16.60
287	Palindrome Frog		csfpython	23	14.46
340	Zeckendorf Lite		csfpython	15	15.16
346	Long Decimal Fractions		csfpython	14	15.27
339	Parking Lot			15	15.16
217	Personality Swap			31	13.96
383	E2C2S - try harder!		gardengnome	8	16.16
419	Special Digits		csfpython	3	17.57
261	Easter Bunnies 2D		gardengnome	24	14.38
271	A Knight some Trolls and a Princess		csfpython	21	14.61
424	New Towers of Hanoi		csfpython	2	18.07
422	Mabinogion Sheep		moxieman	2	18.07
410	Village Door Shuffle		csfpython	3	17.57
341	Zeckendorf Advanced		csfpython	10	15.81
262	Easter Bunnies 2D Advanced		gardengnome	16	15.05
222	Easter Eggs Advanced			19	14.77
221	XWords		quandray	19	14.77
263	Easter Bunnies 3D		gardengnome	15	15.16
365	Flower Border Arrangements		csfpython	6	16.60
266	Pancake Sorting			14	15.27
295	Vigenere Cipher Cracker			11	15.66
333	Happy Triplets			8	16.16
279	Two Buckets Advanced		csfpython	12	15.52
235	Train Merge Advanced			15	15.16
391	Scout Proficiency Badges		csfpython	3	17.57
237	Road Network Destruction			13	15.39
215	Klotski	SK		13	15.39
327	Dobbin's Long Journey		csfpython	6	16.60
264	Party Presents		csfpython	9	15.98
226	Multiplicative Persistence Backtrace			11	15.66
373	Railroad Rat		csfpython	3	17.57
251	Radio Spies			8	16.16
280	Three Buckets Re-visited		csfpython	6	16.60
240	Playfair Cipher Cracking			7	16.36
232	Shift Register Randomizer			7	16.36