Problems

 RSS feed for new problems
Submissions Users
Name Total Acc. Ratio Fastest Total   Acc. Ratio Difficulty
Bona Fide 15 2 13% 0.88 3 1 33% 7.4
Ball Tricks 63 3 5% 0.30 3 2 67% 7.9
Tantrix 5 5 100% 0.01 4 4 100% 5.3
Lines Of Action 27 2 7% 0.01 4 2 50% 6.9
Symmetric Polynomials 43 2 5% 0.00 5 2 40% 7.9
Swish 21 6 29% 0.34 5 4 80% 6.3
Pseudo-random Numbers 12 2 17% 0.07 5 2 40% 6.5
MC Part Deux 19 3 16% 0.00 5 2 40% 7.4
Maze 28 3 11% 0.28 5 3 60% 7.5
Manhattan Shopping 23 6 26% 0.20 5 4 80% 6.3
Justice for Ants 33 6 18% 2.19 5 4 80% 6.7
Grid Speed 15 3 20% 0.04 5 3 60% 6.6
A Royal Problem 23 6 26% 0.73 5 3 60% 7.1
JezzBall 19 3 16% 0.28 6 3 50% 7.4
Holiday Stars 52 12 23% 0.00 6 6 100% 6.3
Fog Catchers 31 11 35% 0.14 6 6 100% 4.6
Flight Safety 21 3 14% 0.12 6 3 50% 7.9
Dance Reconstruction (Hard) 12 5 42% 0.00 6 5 83% 6.4
Cellular Merging 42 7 17% 0.01 6 3 50% 7.5
Bats! 7 3 43% 0.03 6 2 33% 6.7
Walk 27 5 19% 0.02 7 5 71% 7.1
Structural Equivalence 15 5 33% 0.00 7 5 71% 5.7
Kattis' Little Helpers 14 1 7% 0.98 7 1 14% 8.0
Jus Accrescendi 22 6 27% 0.02 7 5 71% 6.9
Ice Cream 53 3 6% 0.21 7 3 43% 7.6
How Big Are the Pockets? 25 5 20% 0.01 7 5 71% 7.0
Histogrami 99 1 1% 0.10 7 1 14% 8.6
Habeas Corpus 19 7 37% 0.00 7 6 86% 5.9
Entertaining Excursion 63 5 8% 0.01 7 5 71% 7.0
Enjoying Elderberries 27 6 22% 0.25 7 4 57% 6.9
Chuck 16 6 38% 0.01 7 6 86% 6.2
Bar Code 73 7 10% 3.81 7 5 71% 6.4
Banana Problem 9 6 67% 0.36 7 6 86% 5.6
Tournament 27 4 15% 0.04 8 4 50% 7.7
The Brick Stops Here 40 5 12% 0.55 8 4 50% 7.9
Stickers 21 4 19% 0.12 8 4 50% 7.7
Solar Energy 38 8 21% 0.29 8 3 38% 8.2
Police 51 5 10% 0.19 8 4 50% 6.6
Physiognomy 11 4 36% 0.94 8 4 50% 7.9
Periodic Points 27 9 33% 0.22 8 7 88% 6.2
Odometer Analysis 34 2 6% 0.00 8 2 25% 8.9
Kamioni 19 7 37% 0.27 8 7 88% 5.6
Holmes 107 30 28% 0.09 8 5 62% 7.3
Climbing 27 3 11% 0.04 8 3 38% 7.8
Catmas Gifts 28 6 21% 0.00 8 5 62% 7.7
Brownie Points II 30 6 20% 0.11 8 4 50% 7.2
Bridge Builders 12 3 25% 0.12 8 3 38% 7.7
Visitors Train 34 5 15% 0.00 9 4 44% 8.7
Train Delays 22 9 41% 0.01 9 8 89% 5.6
Ticket to Ride 21 5 24% 0.00 9 5 56% 6.5
Sightseeing Tour 20 6 30% 0.01 9 6 67% 7.1
Routing 12 8 67% 0.02 9 8 89% 5.7
Return of the Jedi 20 8 40% 0.00 9 6 67% 6.6
Ranklist Sorting 30 2 7% 0.01 9 2 22% 8.2
Pegs 17 6 35% 0.16 9 5 56% 7.2
Ideas 50 6 12% 0.18 9 5 56% 7.3
Flatland Fidget Spinner 41 4 10% 0.26 9 4 44% 7.4
Fishing Contest 46 2 4% 0.81 9 2 22% 7.8
Equinumerous 32 5 16% 0.41 9 5 56% 6.2
Drive Safely 80 5 6% 0.01 9 5 56% 8.6
Unequalled Consumption 44 14 32% 0.01 10 10 100% 5.1
Triplet-Free Queens 28 8 29% 1.09 10 6 60% 8.3
Stack Machine 43 13 30% 0.02 10 6 60% 6.9
San 25 8 32% 0.85 10 6 60% 7.2
Prison Rearrangement 26 7 27% 0.08 10 7 70% 6.9
Polyomino Powers 15 10 67% 0.01 10 8 80% 5.4
Plankton Food 35 7 20% 0.66 10 6 60% 7.2
Mountainous Landscape 23 6 26% 0.60 10 6 60% 6.4
Debellatio 36 10 28% 0.00 10 8 80% 6.2
Coupons 40 5 12% 0.14 10 5 50% 8.1
Charlie the Cockchafer 44 9 20% 0.02 10 8 80% 6.6
Train Tickets 35 6 17% 0.24 11 5 45% 8.1
Shares 58 11 19% 0.15 11 9 82% 5.9
Palačinke 40 10 25% 0.05 11 8 73% 6.5
Out of Context 29 9 31% 0.07 11 6 55% 7.9
Old School Days 59 3 5% 0.07 11 3 27% 8.5
New Maths 17 9 53% 0.00 11 8 73% 7.0
Kabobs 36 8 22% 1.73 11 5 45% 8.3
Institute of Advanced Category Manipulation 24 9 38% 0.00 11 9 82% 6.6
Ink Blots 21 8 38% 0.00 11 7 64% 7.1
Hearthbreakers 143 24 17% 0.03 11 9 82% 6.9
Green Eggs and Ham 55 5 9% 0.01 11 5 45% 8.2
Great Circle 45 10 22% 0.00 11 9 82% 6.1
Dungeon Dawdler 141 22 16% 0.05 11 8 73% 7.3
Attendance 21 8 38% 0.21 11 8 73% 6.6
Žabe 62 6 10% 0.00 12 5 42% 8.8
Trezor 44 10 23% 0.00 12 10 83% 6.2
The Worm in the Apple 35 18 51% 0.12 12 11 92% 4.9
Tenkici 31 14 45% 0.01 12 11 92% 5.6
Striker-Count 89 39 44% 0.07 12 8 67% 7.1
Staza 30 10 33% 0.01 12 9 75% 6.6
Ski Resort 115 10 9% 0.25 12 8 67% 5.9
Sculpture 19 10 53% 0.05 12 10 83% 7.1
Rubik's Rectangle 43 10 23% 0.33 12 8 67% 7.8
Polygraph 50 10 20% 0.01 12 10 83% 6.6
Planete 68 7 10% 0.04 12 7 58% 6.0
Pipes 23 13 57% 0.00 12 11 92% 5.1
PermRLE 29 7 24% 0.50 12 7 58% 6.6
Odašiljači 30 9 30% 0.04 12 8 67% 7.0
Hogwarts 25 12 48% 0.00 12 9 75% 5.8