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		4726	5.27
59	Bulls and Cows			2933	6.10
22	Two Printers	ES RU		3102	6.00
69	Fibonacci Divisibility			1898	6.86
62	Prime Ranges			1661	7.09
80	Duel Chances			1162	7.71
36	Code Guesser	UA		1208	7.64
54	Pythagorean Triples			1065	7.86
97	Girls and Pigs			863	8.22
51	Dungeons and Dragons Dice	UA		817	8.32
66	Caesar Cipher Cracker			722	8.53
108	Star Medals			606	8.84
71	Fibonacci Divisibility Advanced			557	8.98
89	Instrument Tuner			467	9.29
131	Four Pics One Word			392	9.59
434	A Crime on Logic Island Advanced		csfpython	11	15.65
140	Proper Bracket Sequences			254	10.34
427	Cheapest Bus Tickets			13	15.38
439	Power Sum of Digits		csfpython	3	17.56
173	Chords of Music			197	10.78
151	Word Ladders			195	10.80
129	Enumerating Combinations			200	10.76
139	Beam Balance and Masses			186	10.88
432	Ball Bearing Collisions		csfpython	6	16.59
423	Russian Dolls		csfpython	11	15.65
192	Gangster Battles			140	11.37
111	Necklace Count			178	10.96
110	Lucky Tickets Advanced			168	11.06
421	Princess and Tiger			10	15.80
372	String Minimization			33	13.84
179	Look and Say binary			121	11.62
359	Find 3 Numbers		csfpython	38	13.61
420	Life on a String		csfpython	10	15.80
157	Emirp primE			115	11.71
384	Equal Hamming Distance		csfpython	23	14.45
426	Weighted Sum of Digits 2		csfpython	6	16.59
381	Finding Squares		csfpython	22	14.52
100	Crossing the Road			116	11.70
209	Suffix Array Advanced			71	12.54
210	Ticket Puzzle			70	12.56
409	Election Fever		csfpython	9	15.97
430	Cutting Paper		csfpython	3	17.56
113	Ground Zero			93	12.08
405	Three Friendly Knights		csfpython	10	15.80
274	Two Buckets			45	13.32
389	Binary Split Guessing Game		csfpython	13	15.38
175	Algae Robot			67	12.64
259	Easter Bunnies		gardengnome	45	13.32
107	Knight's Tour			82	12.29
204	Wandering Star			55	12.98
241	Village Ways			46	13.28
413	Tree Painting		csfpython	6	16.59
292	Factorial Trailing Zeroes			32	13.90
218	Rain Must Fall	DE		48	13.21
393	Urban Planning		csfpython	10	15.80
149	Prime Chains			61	12.80
379	Dice with Infinity Sides		telebashna	12	15.51
307	The Problem of Too Many Clues		zelevin	26	14.24
398	Collecting Diamonds		csfpython	8	16.15
180	Simple Game of Sticks			48	13.21
417	Unfortunate Bubble Sort		gardengnome	4	17.17
395	Growth of Micro-Organisms		csfpython	8	16.15
347	Unwanted Multiples		csfpython	16	15.05
415	Smallest Message		gardengnome	4	17.17
338	Throwing Easter Eggs		gardengnome	17	14.95
255	LCM of a range			31	13.95
354	Too Many Divisors		csfpython	14	15.26
247	Towers of Hanoi			31	13.95
382	Die Throw Sequences		csfpython	9	15.97
419	Special Digits		csfpython	3	17.56
346	Long Decimal Fractions		csfpython	14	15.26
287	Palindrome Frog		csfpython	23	14.45
424	New Towers of Hanoi		csfpython	2	18.06
383	E2C2S - try harder!		gardengnome	8	16.15
340	Zeckendorf Lite		csfpython	14	15.26
339	Parking Lot			14	15.26
217	Personality Swap			31	13.95
261	Easter Bunnies 2D		gardengnome	24	14.38
422	Mabinogion Sheep		moxieman	2	18.06
402	Game of Stones		csfpython	4	17.17
410	Village Door Shuffle		csfpython	3	17.56
271	A Knight some Trolls and a Princess		csfpython	18	14.85
341	Zeckendorf Advanced		csfpython	10	15.80
262	Easter Bunnies 2D Advanced		gardengnome	16	15.05
221	XWords		quandray	19	14.77
365	Flower Border Arrangements		csfpython	6	16.59
263	Easter Bunnies 3D		gardengnome	15	15.15
222	Easter Eggs Advanced			18	14.85
266	Pancake Sorting			14	15.26
333	Happy Triplets			8	16.15
295	Vigenere Cipher Cracker			11	15.65
279	Two Buckets Advanced		csfpython	12	15.51
235	Train Merge Advanced			15	15.15
391	Scout Proficiency Badges		csfpython	3	17.56
237	Road Network Destruction			13	15.38
215	Klotski	SK		13	15.38
327	Dobbin's Long Journey		csfpython	6	16.59
373	Railroad Rat		csfpython	3	17.56
264	Party Presents		csfpython	9	15.97
226	Multiplicative Persistence Backtrace			11	15.65
251	Radio Spies			8	16.15
280	Three Buckets Re-visited		csfpython	6	16.59
240	Playfair Cipher Cracking			7	16.36
232	Shift Register Randomizer			7	16.36