Problems by Ulf Lundström

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A1 Paper 6232 1875 30% 0.00 1847 1476 80% 3.5
Alphabet Animals 3190 941 29% 0.00 879 721 82% 3.2
Black Friday 8519 3243 38% 0.00 3222 2830 88% 2.0
Card Hand Sorting 745 286 38% 0.00 235 196 83% 4.1
Car Game 2409 675 28% 0.10 452 290 64% 5.9
Coast Length 7147 2634 37% 0.01 1867 1589 85% 3.5
Erase Securely 5743 2986 52% 0.00 2769 2590 94% 1.7
Exhaustive Experiment 85 18 21% 0.08 28 16 57% 7.7
Falling Mugs 3626 945 26% 0.00 813 697 86% 3.6
Flag Quiz 931 319 34% 0.00 292 247 85% 3.9
Galactic Warlords 515 122 24% 0.00 145 106 73% 6.6
Kayaking Trip 1304 404 31% 0.01 339 268 79% 5.2
Kindergarten Excursion 2104 686 33% 0.00 590 485 82% 4.1
Lifting Walls 3901 918 24% 0.00 740 628 85% 4.0
Luggage 328 56 17% 0.06 48 37 77% 7.1
Number Trick 1721 294 17% 0.00 344 201 58% 7.1
Proteins 200 58 29% 0.01 60 47 78% 6.4
Restaurant Orders 7847 1592 20% 0.01 1104 842 76% 5.0
Tomography 1632 431 26% 0.00 337 275 82% 4.0
Tomosynthesis 94 32 34% 0.00 26 23 88% 4.9
Vacuum Tubes 279 79 28% 0.01 76 58 76% 6.5
Virus Replication 5562 1283 23% 0.00 1112 919 83% 3.6
X-ray spectrum 194 46 24% 0.00 49 41 84% 5.8