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Problem Category Points AC % Users
ECOO '12 R3 P3 - Steam Arithmetic ECOO 7p 39.0% 148
ECOO '12 R3 P4 - Splitsville ECOO 10p 69.2% 6
ECOO '13 R1 P1 - Take a Number ECOO 5p 27.0% 1584
ECOO '13 R1 P2 - The Luhn Algorithm ECOO 5p 46.2% 389
ECOO '13 R1 P3 - Hexudoku ECOO 7p 48.7% 99
ECOO '13 R1 P4 - Coupon Day ECOO 10p 33.3% 26
ECOO '13 R2 P1 - Upsetris ECOO 5p 41.5% 37
ECOO '13 R2 P2 - The Walking Dead ECOO 7p 36.4% 13
ECOO '13 R2 P3 - Last Robot Standing ECOO 7p 37.9% 9
ECOO '13 R2 P4 - Breaking Rocks ECOO 10p 62.5% 15
ECOO '13 R3 P1 - Irregular Expressions ECOO 5p 22.0% 18
ECOO '13 R3 P2 - Mutant Children ECOO 10p 35.6% 14
ECOO '13 R3 P3 - Go With the Flow ECOO 10p 28.3% 11
ECOO '13 R3 P4 - Tour de Force ECOO 12p 48.8% 79
ECOO '14 R1 P1 - Martian Time ECOO 5p 26.1% 78
ECOO '14 R1 P2 - Orphan Black ECOO 5p 66.7% 40
ECOO '14 R1 P3 - Word Search ECOO 7p 39.8% 100
ECOO '14 R1 P4 - Fischer Random Chess ECOO 5p 37.9% 38
ECOO '14 R2 P1 - Scratch and Win ECOO 5p 9.5% 41
ECOO '14 R2 P2 - Black and Grey ECOO 5p 43.2% 30
ECOO '14 R2 P3 - EasySweeper ECOO 10p 36.9% 17
ECOO '14 R2 P4 - What Lies Ahead ECOO 10p 24.0% 23
ECOO '14 R3 P1 - Substitute Teacher ECOO 5p 51.0% 26
ECOO '14 R3 P2 - Mothers and Daughters ECOO 7p 58.8% 93
ECOO '14 R3 P3 - Future City ECOO 10p 21.4% 28
ECOO '14 R3 P4 - Baby Talk ECOO 10p 57.7% 34
ECOO '15 R1 P1 - When You Eat Your Smarties ECOO 5p 24.1% 1393
ECOO '15 R1 P2 - Word Wrap ECOO 10p 24.2% 155
ECOO '15 R1 P3 - Ten Pin Trig ECOO 10p 36.8% 44
ECOO '15 R1 P4 - Neanderthal Numbers ECOO 10p 34.2% 212
ECOO '15 R2 P1 - The Interlace Cypher ECOO 7p 45.9% 79
ECOO '15 R2 P2 - So So ECOO 12p 18.7% 11
ECOO '15 R2 P3 - Lucas' Other Tower ECOO 10p 45.8% 337
ECOO '15 R2 P4 - Rectangle Roundup ECOO 12p 34.1% 18
ECOO '15 R3 P1 - Just the Factoradics, Ma'am ECOO 7p 45.0% 41
ECOO '15 R3 P2 - Tiling Trouble ECOO 15p 20.0% 2
ECOO '15 R3 P3 - Roadie Cross ECOO 10p 11.9% 7
ECOO '15 R3 P4 - Under the Rug ECOO 12p 6.9% 3
ECOO '16 R1 P1 - Pass or Fail ECOO 5p 25.9% 312
ECOO '16 R1 P2 - Spindie ECOO 7p 24.2% 221
ECOO '16 R1 P3 - Railway Sort ECOO 7p 39.0% 344
ECOO '16 R1 P4 - Kayenne ECOO 7p 28.5% 45
ECOO '16 R2 P1 - Palindrome Panic ECOO 12p 15.2% 97
ECOO '16 R2 P2 - CC+ ECOO 7p 30.9% 52
ECOO '16 R2 P3 - BattleShip ECOO 7p 34.6% 35
ECOO '16 R2 P4 - Hop, Skip and Jump ECOO 12p 24.3% 19
ECOO '16 R3 P1 - Nerd Poker ECOO 7p 14.8% 14
ECOO '16 R3 P2 - Target Practice ECOO 10p 23.5% 17
ECOO '16 R3 P3 - CamelCase ECOO 10p 25.0% 184
ECOO '16 R3 P4 - Cuthbert's Calculator ECOO 15p 64.6% 6