Problems by Ulf Lundström

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A1 Paper 4881 1435 29% 0.00 1420 1131 80% 3.5
Alphabet Animals 1579 491 31% 0.00 503 401 80% 3.2
Black Friday 6838 2607 38% 0.00 2611 2272 87% 2.2
Card Hand Sorting 630 253 40% 0.00 200 167 84% 4.1
Car Game 2252 621 28% 0.10 410 257 63% 5.9
Coast Length 5717 2092 37% 0.01 1483 1267 85% 3.0
Erase Securely 4394 2307 53% 0.00 2157 2012 93% 1.7
Falling Mugs 2563 660 26% 0.00 604 526 87% 3.2
Flag Quiz 435 154 35% 0.00 164 135 82% 4.1
Galactic Warlords 483 113 23% 0.00 136 98 72% 6.6
Kayaking Trip 854 296 35% 0.01 243 199 82% 5.3
Kindergarten Excursion 1492 521 35% 0.00 416 342 82% 4.4
Lifting Walls 2783 697 25% 0.00 561 473 84% 4.0
Luggage 294 49 17% 0.06 42 32 76% 7.8
Number Trick 1531 258 17% 0.00 307 178 58% 7.2
Proteins 172 55 32% 0.01 56 44 79% 6.0
Restaurant Orders 5420 1128 21% 0.01 808 615 76% 4.3
Tomography 1244 325 26% 0.00 235 189 80% 3.9
Tomosynthesis 52 22 42% 0.00 22 19 86% 5.7
Vacuum Tubes 270 75 28% 0.01 72 55 76% 6.2
Virus Replication 4283 952 22% 0.00 844 683 81% 3.6
X-ray spectrum 166 38 23% 0.00 39 34 87% 4.6