Solved by koosaga

#	Title	# Solved	Avg. Tries
6458	Circle Through Three Points	17	2.18
6460	Pizza Anyone?	10	2.00
6463	Just the Facts	355	2.13
6487	Intersecting Lines	274	2.22
6491	Perfection	376	2.59
6493	Slurpys	98	1.79
6497	Dark roads	5,605	2.87
6500	Generate random numbers	327	1.51
6501	Hotel booking	13	4.23
6502	Alfredo's Pizza Restaurant	1,819	1.93
6504	Convert Kilometers to Miles	255	1.37
6506	El Dorado	112	2.05
6515	Frequent values	361	3.68
6526	Ambiguous permutations	55	1.15
6534	All Discs Considered	9	1.89
6536	Code	13	2.54
6543	The Bottom of a Graph	632	1.87
6549	Largest Rectangle in a Histogram	10,967	3.64
6550	All in All	2,375	2.54
6565	Hard to Believe, but True!	163	1.37
6569	Mondriaan's Dream	225	2.15
6571	How many Fibs?	650	3.54
6587	France '98	19	1.68
6588	Goldbach's Conjecture	12,360	4.57
6591	Binomial Showdown	1,574	3.76
6593	Dungeon Master	7,571	2.56
6597	Tree Recovery	410	1.89
6600	The Circumference of the Circle	284	1.78
6603	Lotto	25,919	1.79
6605	Humble Numbers	64	3.02
6607	Gregory the Grasshopper	36	2.31
6609	Mosquito Multiplication	488	1.94
6612	Andrew the Ant	79	1.86
6615	Collatz Conjecture	226	3.10
6616	Text Encryption	191	2.86
6619	Intergalactic Mortgage	25	5.40
6620	Simple Polygon	16	1.63
6626	Measuring Problem Difficulty	11	1.45
6627	The Easiest Problem is This One	93	1.06
6631	God Save the i-th Queen	12	2.33
6633	Clock Captcha	13	1.92
6634	Digital Display	63	2.51
6638	Peculiar Primes	11	1.27
6640	Suspicious Stocks	29	1.52
6645	Stock Exchange	54	1.22
6647	Safe Gambling	15	1.73
6648	Government Help	10	1.40
6658	Hypertheseus	5	1.40
6662	Divisors	48	2.90
6663	Emag eht htiw Em Pleh	20	1.25

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