| 1994 | [USACO 2023 February Contest Gold] Problem 2. Fertilizing Pastures | 1/1 | |
| 1995 | [USACO 2023 February Contest Gold] Problem 3. Piling Papers | 1/1 | |
| 1996 | [USACO 2023 US Open Contest Bronze] Problem 1. FEB | 1/2 | |
| 2000 | [USACO 2023 US Open Contest Silver] Problem 2. Field Day | 1/1 | |
| 2001 | [USACO 2023 US Open Contest Silver] Problem 3. Pareidolia | 1/1 | |
| 2002 | [USACO 2023 US Open Contest Gold] Problem 1. Custodial Cleanup | 1/1 | |
| 2003 | [USACO 2023 US Open Contest Gold] Problem 2. Pareidolia | 1/1 | |
| 2005 | [USACO 2023 December Contest Bronze] Problem 1. Candy Cane Feast | 1/3 | |
| 2006 | [USACO 2023 December Contest Bronze] Problem 2. Cowntact Tracing 2 | 1/1 | |
| 2007 | [USACO 2023 December Contest Bronze] Problem 3. Farmer John Actually Farms | 1/1 | |
| 2008 | [USACO 2023 December Contest Silver] Problem 1. Bovine Acrobatics | 1/1 | |
| 2009 | [USACO 2023 December Contest Silver] Problem 2. Cycle Correspondence | 1/1 | |
| 2010 | [USACO 2023 December Contest Silver] Problem 3. Target Practice | 1/1 | |
| 2011 | [USACO 2023 December Contest Gold] Problem 1. Flight Routes | 1/1 | |
| 2012 | [USACO 2023 December Contest Gold] Problem 2. Minimum Longest Trip | 1/1 | |
| 2013 | [USACO 2023 December Contest Gold] Problem 3. Haybale Distribution | 1/2 | |
| 2014 | [USACO 2024 January Contest Bronze] Problem 1. Majority Opinion | 1/2 | |
| 2015 | [USACO 2024 January Contest Bronze] Problem 2. Cannonball | 1/1 | |
| 2016 | [USACO 2024 January Contest Bronze] Problem 3. Balancing Bacteria | 1/1 | |
| 2017 | [USACO 2024 January Contest Silver] Problem 1. Cowmpetency | 1/1 | |
| 2018 | [USACO 2024 January Contest Silver] Problem 2. Potion Farming | 1/1 | |
| 2019 | [USACO 2024 January Contest Silver] Problem 3. Cowlendar | 1/3 | |
| 2021 | [USACO 2024 January Contest Gold] Problem 2. Cowmpetency | 1/1 | |
| 2022 | [USACO 2024 January Contest Gold] Problem 3. Nap Sort | 1/1 | |
| 2023 | [USACO 2024 February Contest Bronze] Problem 1. Palindrome Game | 1/1 | |
| 2024 | [USACO 2024 February Contest Bronze] Problem 2. Milk Exchange | 1/1 | |
| 2025 | [USACO 2024 February Contest Bronze] Problem 3. Maximizing Productivity | 1/2 | |
| 2026 | [USACO 2024 February Contest Silver] Problem 1. Target Practice II | 1/1 | |
| 2028 | [USACO 2024 February Contest Silver] Problem 3. Moorbles | 1/2 | |
| 2030 | [USACO 2024 February Contest Gold] Problem 2. Milk Exchange | 1/1 | |
| 2031 | [USACO 2025 January Contest, Bronze] Problem 1. Astral Superposition | 1/1 | |
| 2032 | [USACO 2025 January Contest, Bronze] Problem 2. It's Mooin' Time II | 1/1 | |
| 2033 | [USACO 2025 January Contest, Bronze] Problem 3. Cow Checkups | 1/1 | |
| 2034 | [USACO 2025 January Contest, Silver] Problem 2. Farmer John's Favorite Operation | 1/1 | |
| 2035 | [USACO 2025 January Contest, Silver] Problem 3. Table Recovery | 1/1 | |
| 2037 | [USACO 2025 January Contest, Platinum] Problem 2. Shock Wave | 1/2 | |
| 2038 | [USACO 2024 February Contest Gold] Problem 3. Quantum Moochanics | 1/1 | |
| 2039 | [USACO 2024 US Open Contest Bronze] Problem 1. Logical Moos | 1/2 | |
| 2040 | [USACO 2024 US Open Contest Bronze] Problem 2. Walking Along a Fence | 1/1 | |
| 2041 | [USACO 2024 December Contest, Bronze] Problem 1. Roundabout Rounding | 1/2 | |
| 2043 | [USACO 2024 US Open Contest Bronze] Problem 3. Farmer John's Favorite Permutation | 1/2 | |
| 2044 | [USACO 2024 US Open Contest Silver] Problem 1. Bessie's Interview | 1/1 | |
| 2045 | [USACO 2025 February Contest, Bronze] Problem 2. Making Mexes | 1/1 | |
| 2047 | [USACO 2024 US Open Contest Silver] Problem 2. Painting Fence Posts | 1/4 | |
| 2049 | [USACO 2024 US Open Contest Gold] Problem 1. Cowreography | 1/1 | |
| 2050 | [USACO 2024 US Open Contest Gold] Problem 2. Grass Segments | 1/2 | |
| 2051 | [USACO 2024 US Open Contest Gold] Problem 3. Smaller Averages | 1/1 | |
| 2052 | [USACO 2025 February Contest, Gold] Problem 1. Bessie's Function | 1/3 | |
| 2053 | [USACO 2025 February Contest, Gold] Problem 2. The Best Subsequence | 1/3 | |