Problems by Ulf Lundström

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A1 Paper 4949 1463 30% 0.00 1446 1152 80% 3.6
Alphabet Animals 1707 543 32% 0.00 549 443 81% 3.3
Black Friday 6909 2638 38% 0.00 2649 2303 87% 2.2
Card Hand Sorting 630 253 40% 0.00 200 167 84% 4.1
Car Game 2277 635 28% 0.10 413 260 63% 5.9
Coast Length 5819 2126 37% 0.01 1515 1296 86% 3.0
Erase Securely 4498 2366 53% 0.00 2218 2067 93% 1.7
Falling Mugs 2581 672 26% 0.00 615 536 87% 3.2
Flag Quiz 464 168 36% 0.00 174 143 82% 4.0
Galactic Warlords 497 115 23% 0.00 138 100 72% 6.6
Kayaking Trip 862 298 35% 0.01 246 201 82% 5.3
Kindergarten Excursion 1593 553 35% 0.00 443 368 83% 4.4
Lifting Walls 2822 707 25% 0.00 568 481 85% 4.0
Luggage 296 50 17% 0.06 43 33 77% 7.3
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 5436 1138 21% 0.01 813 618 76% 4.3
Tomography 1289 333 26% 0.00 240 195 81% 3.9
Tomosynthesis 52 22 42% 0.00 22 19 86% 5.7
Vacuum Tubes 271 76 28% 0.01 73 56 77% 6.2
Virus Replication 4351 970 22% 0.00 862 695 81% 3.7
X-ray spectrum 168 40 24% 0.00 40 35 88% 4.6