Problems by Ulf Lundström

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A1 Paper 6648 2012 30% 0.00 2001 1588 79% 3.8
Alphabet Animals 3587 1049 29% 0.00 973 794 82% 3.5
Black Friday 9090 3472 38% 0.00 3436 3013 88% 2.2
Card Hand Sorting 760 296 39% 0.00 241 201 83% 4.1
Car Game 2449 683 28% 0.10 465 298 64% 5.9
Coast Length 7646 2821 37% 0.01 2012 1714 85% 3.6
Erase Securely 6199 3211 52% 0.00 2970 2781 94% 1.7
Exhaustive Experiment 233 52 22% 0.04 59 41 69% 6.0
Falling Mugs 4183 1073 26% 0.00 943 795 84% 3.8
Flag Quiz 1025 359 35% 0.00 325 276 85% 3.9
Galactic Warlords 555 134 24% 0.00 158 117 74% 6.5
Kayaking Trip 1674 522 31% 0.01 439 354 81% 4.5
Kindergarten Excursion 2447 817 33% 0.00 665 558 84% 3.7
Lifting Walls 4277 1016 24% 0.00 832 703 84% 4.2
Luggage 328 56 17% 0.06 48 37 77% 7.2
Number Trick 1849 304 16% 0.00 362 211 58% 7.1
Proteins 200 58 29% 0.01 60 47 78% 6.4
Restaurant Orders 8439 1757 21% 0.01 1212 930 77% 5.2
Tomography 1754 454 26% 0.00 357 293 82% 3.9
Tomosynthesis 105 34 32% 0.00 28 25 89% 4.7
Vacuum Tubes 285 79 28% 0.01 77 58 75% 6.7
Virus Replication 6099 1478 24% 0.00 1237 1029 83% 3.6
X-ray spectrum 197 47 24% 0.00 50 42 84% 5.7