Problems

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

Volume: Puzzles - total 112 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
24	Neumann's Random Generator	DE ES RU		5074	5.28
59	Bulls and Cows			3184	6.08
22	Two Printers	ES RU		3386	5.98
69	Fibonacci Divisibility			2061	6.84
62	Prime Ranges			1814	7.06
80	Duel Chances			1266	7.69
36	Code Guesser	UA		1354	7.57
54	Pythagorean Triples			1178	7.81
97	Girls and Pigs			947	8.19
51	Dungeons and Dragons Dice	UA		903	8.27
66	Caesar Cipher Cracker			788	8.51
108	Star Medals			644	8.86
71	Fibonacci Divisibility Advanced			624	8.91
89	Instrument Tuner			515	9.25
131	Four Pics One Word			411	9.64
476	Prime Vowel Count		csfpython	22	14.65
140	Proper Bracket Sequences			275	10.33
173	Chords of Music			221	10.71
472	Unreachable Amounts		csfpython	18	14.98
129	Enumerating Combinations			223	10.70
151	Word Ladders			202	10.87
139	Beam Balance and Masses			206	10.83
111	Necklace Count			202	10.87
496	Minimum Journey Cost		csfpython	1	18.89
110	Lucky Tickets Advanced			192	10.95
192	Gangster Battles			150	11.38
179	Look and Say binary			130	11.63
359	Find 3 Numbers		csfpython	50	13.27
157	Emirp primE			123	11.72
459	Number String Multiples of Thirteen		csfpython	13	15.51
372	String Minimization			42	13.56
100	Crossing the Road			130	11.63
463	Crossing Towns		csfpython	11	15.78
384	Equal Hamming Distance		csfpython	35	13.87
427	Cheapest Bus Tickets			20	14.81
458	Mountain Panorama		csfpython	11	15.78
210	Ticket Puzzle			81	12.44
209	Suffix Array Advanced			79	12.48
434	A Crime on Logic Island Advanced		csfpython	17	15.08
113	Ground Zero			104	12.01
274	Two Buckets			57	13.04
107	Knight's Tour			97	12.13
259	Easter Bunnies		gardengnome	58	13.01
241	Village Ways			61	12.93
381	Finding Squares		csfpython	27	14.31
175	Algae Robot			74	12.60
218	Rain Must Fall	DE		58	13.01
255	LCM of a range			50	13.27
292	Factorial Trailing Zeroes			42	13.56
204	Wandering Star			60	12.96
421	Princess and Tiger			15	15.28
149	Prime Chains			67	12.77
423	Russian Dolls		csfpython	13	15.51
307	The Problem of Too Many Clues		zelevin	34	13.92
450	Bead Games		csfpython	8	16.28
180	Simple Game of Sticks			55	13.10
247	Towers of Hanoi			43	13.52
379	Dice with Infinity Sides		telebashna	20	14.81
439	Power Sum of Digits		csfpython	9	16.10
451	Maximize Toy Production		csfpython	7	16.48
420	Life on a String		csfpython	12	15.64
426	Weighted Sum of Digits 2		csfpython	11	15.78
347	Unwanted Multiples		csfpython	22	14.65
338	Throwing Easter Eggs		gardengnome	23	14.58
389	Binary Split Guessing Game		csfpython	15	15.28
354	Too Many Divisors		csfpython	20	14.81
409	Election Fever		csfpython	12	15.64
405	Three Friendly Knights		csfpython	12	15.64
339	Parking Lot			20	14.81
346	Long Decimal Fractions		csfpython	19	14.89
415	Smallest Message		gardengnome	10	15.93
287	Palindrome Frog		csfpython	26	14.37
340	Zeckendorf Lite		csfpython	19	14.89
217	Personality Swap			34	13.92
393	Urban Planning		csfpython	12	15.64
261	Easter Bunnies 2D		gardengnome	28	14.25
417	Unfortunate Bubble Sort		gardengnome	9	16.10
432	Ball Bearing Collisions		csfpython	7	16.48
395	Growth of Micro-Organisms		csfpython	11	15.78
295	Vigenere Cipher Cracker			22	14.65
382	Die Throw Sequences		csfpython	12	15.64
398	Collecting Diamonds		csfpython	10	15.93
462	Rota Boards		csfpython	3	17.69
271	A Knight some Trolls and a Princess		csfpython	23	14.58
383	E2C2S - try harder!		gardengnome	11	15.78
419	Special Digits		csfpython	7	16.48
341	Zeckendorf Advanced		csfpython	14	15.39
424	New Towers of Hanoi		csfpython	6	16.72
413	Tree Painting		csfpython	7	16.48
402	Game of Stones		csfpython	8	16.28
222	Easter Eggs Advanced			23	14.58
266	Pancake Sorting			19	14.89
263	Easter Bunnies 3D		gardengnome	18	14.98
262	Easter Bunnies 2D Advanced		gardengnome	18	14.98
221	XWords		quandray	21	14.73
410	Village Door Shuffle		csfpython	6	16.72
422	Mabinogion Sheep		moxieman	5	16.98
235	Train Merge Advanced			19	14.89
391	Scout Proficiency Badges		csfpython	7	16.48
279	Two Buckets Advanced		csfpython	15	15.28
333	Happy Triplets			11	15.78
430	Cutting Paper		csfpython	4	17.30
264	Party Presents		csfpython	15	15.28
365	Flower Border Arrangements		csfpython	8	16.28
237	Road Network Destruction			16	15.18
327	Dobbin's Long Journey		csfpython	9	16.10
373	Railroad Rat		csfpython	6	16.72
215	Klotski	SK		13	15.51
280	Three Buckets Re-visited		csfpython	9	16.10
226	Multiplicative Persistence Backtrace			11	15.78
232	Shift Register Randomizer			10	15.93
240	Playfair Cipher Cracking			9	16.10