Problems by Ulf Lundström

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A1 Paper 3622 1076 30% 0.00 1052 830 79% 3.5
Black Friday 5509 2085 38% 0.00 2081 1805 87% 2.2
Card Hand Sorting 573 220 38% 0.00 179 151 84% 3.9
Car Game 2026 543 27% 0.10 375 229 61% 5.9
Coast Length 4819 1768 37% 0.02 1229 1048 85% 3.1
Erase Securely 3434 1839 54% 0.00 1726 1612 93% 1.6
Falling Mugs 2127 533 25% 0.00 492 424 86% 3.4
Flag Quiz 353 114 32% 0.00 129 102 79% 4.6
Galactic Warlords 450 104 23% 0.00 127 93 73% 6.0
Kayaking Trip 686 249 36% 0.01 209 168 80% 5.1
Kindergarten Excursion 1074 383 36% 0.00 330 266 81% 4.8
Lifting Walls 1799 472 26% 0.00 420 356 85% 3.8
Luggage 285 47 16% 0.06 39 30 77% 7.1
Number Trick 1107 194 18% 0.00 249 140 56% 7.0
Proteins 151 49 32% 0.01 48 38 79% 5.7
Restaurant Orders 3280 581 18% 0.01 529 393 74% 5.2
Tomography 1053 269 26% 0.00 179 142 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 2728 665 24% 0.00 619 499 81% 4.0
X-ray spectrum 94 25 27% 0.00 26 22 85% 5.3