Problems by Ulf Lundström

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A1 Paper 3354 976 29% 0.00 957 752 79% 3.6
Black Friday 4698 1871 40% 0.00 1868 1616 87% 2.5
Card Hand Sorting 559 216 39% 0.00 175 147 84% 3.9
Car Game 1990 524 26% 0.10 363 218 60% 6.0
Coast Length 4633 1695 37% 0.02 1169 998 85% 3.0
Erase Securely 3157 1709 54% 0.00 1600 1492 93% 1.7
Falling Mugs 2045 507 25% 0.00 466 401 86% 3.4
Flag Quiz 336 107 32% 0.00 121 95 79% 4.5
Galactic Warlords 434 99 23% 0.00 120 88 73% 5.8
Kayaking Trip 664 243 37% 0.01 202 163 81% 5.1
Kindergarten Excursion 780 255 33% 0.00 248 198 80% 4.8
Lifting Walls 1742 458 26% 0.00 407 345 85% 3.8
Luggage 280 46 16% 0.07 38 29 76% 7.3
Number Trick 1089 190 17% 0.00 242 136 56% 7.0
Proteins 148 48 32% 0.01 47 37 79% 5.9
Restaurant Orders 3089 517 17% 0.01 480 353 74% 5.4
Tomography 1002 259 26% 0.00 168 132 79% 3.8
Tomosynthesis 46 20 43% 0.00 20 17 85% 5.9
Vacuum Tubes 254 71 28% 0.01 67 51 76% 5.5
Virus Replication 2661 643 24% 0.00 599 480 80% 4.0
X-ray spectrum 68 22 32% 0.00 23 20 87% 5.4