Problems by Piotr Rudnicki

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A Flea on a Chessboard	397	83	21%	0.01	93	68	73%	5.3
Antiarithmetic?	1272	240	19%	0.01	301	174	58%	7.1
Ants	3308	1450	44%	0.00	1172	1022	87%	2.7
Bachet's Game	1963	1059	54%	0.08	715	663	93%	2.1
Basic Remains	460	207	45%	0.01	175	156	89%	3.4
Brownie Points I	272	155	57%	0.02	138	126	91%	2.4
Brownie Points II	30	6	20%	0.11	8	4	50%	7.2
Closest Sums	3794	1419	37%	0.00	1152	1000	87%	3.1
Cutting a polygon	241	42	17%	0.00	45	29	64%	7.7
Ferry Loading IV	2818	816	29%	0.00	869	619	71%	4.1
Grid Speed	15	3	20%	0.04	5	3	60%	6.6
How many 0's?	870	379	44%	0.00	341	260	76%	4.1
Knights in Fen	1712	617	36%	0.00	315	270	86%	3.1
Magic Bitstrings	99	43	43%	0.00	38	32	84%	4.4
Marbles On A Tree	973	368	38%	0.00	263	234	89%	3.0
Persistent Numbers	518	225	43%	0.02	181	149	82%	3.8
Rectilinear Polygon	43	15	35%	0.01	17	13	76%	6.4
Three Powers	1794	880	49%	0.00	719	664	92%	2.5
Tri Tiling	1190	535	45%	0.00	436	407	93%	2.1
Watering Grass	2199	474	22%	0.02	373	278	75%	5.8