Problems

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

Volume: Puzzles - total 87 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
24	Neumann's Random Generator	DE ES RU		4628	5.26
59	Bulls and Cows			2871	6.09
22	Two Printers	ES RU		3028	6.00
409	Election Fever		csfpython	6	16.55
69	Fibonacci Divisibility			1862	6.85
62	Prime Ranges			1633	7.07
80	Duel Chances			1138	7.70
36	Code Guesser	UA		1170	7.65
54	Pythagorean Triples			1038	7.86
97	Girls and Pigs			847	8.21
51	Dungeons and Dragons Dice	UA		800	8.31
66	Caesar Cipher Cracker			709	8.52
108	Star Medals			599	8.81
405	Three Friendly Knights		csfpython	8	16.11
71	Fibonacci Divisibility Advanced			547	8.97
89	Instrument Tuner			458	9.28
131	Four Pics One Word			386	9.58
140	Proper Bracket Sequences			243	10.38
384	Equal Hamming Distance		csfpython	21	14.56
173	Chords of Music			192	10.78
381	Finding Squares		csfpython	21	14.56
151	Word Ladders			190	10.80
372	String Minimization			27	14.14
129	Enumerating Combinations			197	10.74
139	Beam Balance and Masses			182	10.88
389	Binary Split Guessing Game		csfpython	13	15.34
192	Gangster Battles			136	11.38
359	Find 3 Numbers		csfpython	31	13.91
402	Game of Stones		csfpython	4	17.13
111	Necklace Count			177	10.92
393	Urban Planning		csfpython	9	15.93
398	Collecting Diamonds		csfpython	6	16.55
110	Lucky Tickets Advanced			166	11.04
179	Look and Say binary			120	11.60
157	Emirp primE			114	11.68
379	Dice with Infinity Sides		telebashna	12	15.47
395	Growth of Micro-Organisms		csfpython	5	16.81
100	Crossing the Road			116	11.65
210	Ticket Puzzle			69	12.55
209	Suffix Array Advanced			69	12.55
383	E2C2S - try harder!		gardengnome	8	16.11
382	Die Throw Sequences		csfpython	8	16.11
113	Ground Zero			89	12.11
274	Two Buckets			40	13.48
175	Algae Robot			66	12.62
259	Easter Bunnies		gardengnome	42	13.39
107	Knight's Tour			82	12.25
354	Too Many Divisors		csfpython	14	15.22
204	Wandering Star			53	13.00
241	Village Ways			42	13.39
292	Factorial Trailing Zeroes			29	14.02
347	Unwanted Multiples		csfpython	15	15.11
218	Rain Must Fall	DE		45	13.28
346	Long Decimal Fractions		csfpython	14	15.22
149	Prime Chains			60	12.79
307	The Problem of Too Many Clues		zelevin	23	14.41
338	Throwing Easter Eggs		gardengnome	15	15.11
391	Scout Proficiency Badges		csfpython	3	17.52
180	Simple Game of Sticks			46	13.24
255	LCM of a range			29	14.02
287	Palindrome Frog		csfpython	22	14.48
340	Zeckendorf Lite		csfpython	12	15.47
247	Towers of Hanoi			29	14.02
339	Parking Lot			12	15.47
261	Easter Bunnies 2D		gardengnome	23	14.41
341	Zeckendorf Advanced		csfpython	10	15.76
217	Personality Swap			29	14.02
271	A Knight some Trolls and a Princess		csfpython	17	14.91
333	Happy Triplets			8	16.11
365	Flower Border Arrangements		csfpython	4	17.13
263	Easter Bunnies 3D		gardengnome	15	15.11
373	Railroad Rat		csfpython	3	17.52
262	Easter Bunnies 2D Advanced		gardengnome	15	15.11
266	Pancake Sorting			14	15.22
279	Two Buckets Advanced		csfpython	12	15.47
221	XWords		quandray	17	14.91
222	Easter Eggs Advanced			16	15.00
235	Train Merge Advanced			14	15.22
237	Road Network Destruction			12	15.47
327	Dobbin's Long Journey		csfpython	5	16.81
215	Klotski	SK		13	15.34
264	Party Presents		csfpython	9	15.93
226	Multiplicative Persistence Backtrace			11	15.61
251	Radio Spies			7	16.31
232	Shift Register Randomizer			7	16.31
240	Playfair Cipher Cracking			6	16.55
280	Three Buckets Re-visited		csfpython	4	17.13