Problems by Ulf Lundström

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A1 Paper 5180 1502 29% 0.00 1504 1188 79% 3.9
Alphabet Animals 1888 587 31% 0.00 583 466 80% 3.4
Black Friday 7194 2713 38% 0.00 2721 2370 87% 2.2
Card Hand Sorting 635 255 40% 0.00 205 169 82% 4.2
Car Game 2336 644 28% 0.10 424 266 63% 6.0
Coast Length 5954 2183 37% 0.01 1552 1326 85% 3.1
Erase Securely 4662 2452 53% 0.00 2290 2138 93% 1.7
Falling Mugs 2770 731 26% 0.00 662 578 87% 3.2
Flag Quiz 533 188 35% 0.00 192 161 84% 3.7
Galactic Warlords 497 115 23% 0.00 138 100 72% 6.5
Kayaking Trip 924 322 35% 0.01 256 212 83% 5.1
Kindergarten Excursion 1647 565 34% 0.00 455 376 83% 4.3
Lifting Walls 2957 733 25% 0.00 592 500 84% 4.0
Luggage 296 50 17% 0.06 43 33 77% 7.5
Number Trick 1532 258 17% 0.00 308 178 58% 7.2
Proteins 185 57 31% 0.01 57 46 81% 5.8
Restaurant Orders 6223 1303 21% 0.01 913 696 76% 4.2
Tomography 1448 375 26% 0.00 277 226 82% 3.8
Tomosynthesis 94 31 33% 0.00 25 22 88% 5.1
Vacuum Tubes 271 76 28% 0.01 73 56 77% 6.2
Virus Replication 4609 1029 22% 0.00 917 746 81% 3.6
X-ray spectrum 172 41 24% 0.00 41 36 88% 4.5