USACO
- nuggets: Beef McNuggets 29 Jan 2019
- rockers: Raucous Rockers 29 Jan 2019
- fence9: Electric Fence 23 Jan 2019
- heritage: American Heritage 17 Jan 2019
- game1: A Game 15 Jan 2019
- camelot: Camelot 13 Jan 2019
- range: Home on the Range 21 Dec 2018
- shopping: Shopping Offers 21 Dec 2018
- fence: Riding the Fences 13 Dec 2018
- msquare: Magic Squares 12 Dec 2018
- butter: Magic Squares 12 Dec 2018
- spin: Spinning Wheels 16 Nov 2018
- ratios: Feed Ratios 15 Nov 2018
- kimbits: Stringsobits 08 Nov 2018
- fact4: Factorials 08 Nov 2018
- inflate: Score Inflation 07 Nov 2018
- contact: Contact 06 Nov 2018
- humble: Humble Numbers 06 Nov 2018
- stamps: Stamps 04 Nov 2018
- agrinet: Agri-Net 02 Nov 2018
- fracdec: Fractions to Decimals 01 Nov 2018
- cowtour: Cow Tours 01 Nov 2018
- comehome: Bessie Come Home 28 Oct 2018
- maze1: Overfencing 23 Oct 2018
- ttwo: The Tamworth Two 23 Oct 2018
- concom: Controlling Companies 18 Oct 2018
- money: Money Systems 18 Oct 2018
- zerosum: Zero Sum 16 Oct 2018
- nocows: Cow Pedigrees 16 Oct 2018
- prefix: Longest Prefix 16 Oct 2018
- lamps: Party Lamps 13 Oct 2018
- runround: Runaround Numbers 13 Oct 2018
- subset: Subset Sums 12 Oct 2018
- preface: Preface Numbering 11 Oct 2018
- holstein: Healthy Holsteins 11 Oct 2018
- hamming: Hamming Codes 10 Oct 2018
- sort3: Sorting a Three-Valued Sequence 09 Oct 2018
- castle: The Castle 09 Oct 2018
- frac1: Ordered Fractions 06 Oct 2018
- pprime: Prime Palindromes 05 Oct 2018
- sprime: Superprime Rib 04 Oct 2018
- numtri: Number Triangles 04 Oct 2018
- milk3: Mother's Milk 03 Oct 2018
- ariprog: Arithmetic Progressions 02 Oct 2018
- skidesign: Ski Course Design 01 Oct 2018
- wormhole: Wormholes 30 Sep 2018
- combo: Combination Lock 30 Sep 2018
- crypt1: Prime Cryptarithm 30 Sep 2018
- dualpal: Dual Palindromes 29 Sep 2018
- palsquare: Palindromic Squares 29 Sep 2018
- milk: Mixing Milk 29 Sep 2018
- barn1: Barn Repair 29 Sep 2018
- namenum: Name That Number 29 Sep 2018
- transform: Transformations 29 Sep 2018
- milk2: Milking Cows 28 Sep 2018
- beads: Broken Necklace 27 Sep 2018
- friday: Friday the 13th 26 Sep 2018
- gift1: Greedy Gift Givers 26 Sep 2018
- ride: Your Ride Is Here 26 Sep 2018