| 269. Alien Dictionary | | | Solve | Hard | | |
| 329. Longest Increasing Path in a Matrix | | | Solve | Hard | | |
| 332. Reconstruct Itinerary | | | Solve | Hard | | |
| 499. The Maze III | | | Solve | Hard | | |
| 631. Design Excel Sum Formula | | | Solve | Hard | | |
| 685. Redundant Connection II | | | Solve | Hard | | |
| 753. Cracking the Safe | | | Solve | Hard | | |
| 765. Couples Holding Hands | | | Solve | Hard | | |
| 834. Sum of Distances in Tree | | | Solve | Hard | | |
| 847. Shortest Path Visiting All Nodes | | | Solve | Hard | | |
| 882. Reachable Nodes In Subdivided Graph | | | Solve | Hard | - | |
| 913. Cat and Mouse | | | Solve | Hard | | |
| 924. Minimize Malware Spread | | | Solve | Hard | | |
| 928. Minimize Malware Spread II | | | Solve | Hard | | |
| 1168. Optimize Water Distribution in a Village | | | Solve | Hard | | |
| 1192. Critical Connections in a Network | | | Solve | Hard | | |
| 1203. Sort Items by Groups Respecting Dependencies | | | Solve | Hard | | |
| 1298. Maximum Candies You Can Get from Boxes | | | Solve | Hard | | |
| 1368. Minimum Cost to Make at Least One Valid Path in a Grid | | | Solve | Hard | | |
| 1377. Frog Position After T Seconds | | | Solve | Hard | | |
| 1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree | | | Solve | Hard | | |
| 1494. Parallel Courses II | | | Solve | Hard | | |
| 1548. The Most Similar Path in a Graph | | | Solve | Hard | | |
| 1579. Remove Max Number of Edges to Keep Graph Fully Traversable | | | Solve | Hard | | |
| 1591. Strange Printer II | | | Solve | Hard | | |
| 1632. Rank Transform of a Matrix | | | Solve | Hard | | |
| 1697. Checking Existence of Edge Length Limited Paths | | | Solve | Hard | | |
| 1719. Number Of Ways To Reconstruct A Tree | | | Solve | Hard | | |
| 1724. Checking Existence of Edge Length Limited Paths II | | | Solve | Hard | | |
| 1728. Cat and Mouse II | | | Solve | Hard | | |
| 1761. Minimum Degree of a Connected Trio in a Graph | | | Solve | Hard | | |
| 1782. Count Pairs Of Nodes | | | Solve | Hard | | |
| 1857. Largest Color Value in a Directed Graph | | | Solve | Hard | | |
| 1916. Count Ways to Build Rooms in an Ant Colony | | | Solve | Hard | | |
| 1928. Minimum Cost to Reach Destination in Time | | | Solve | Hard | | |
| 2045. Second Minimum Time to Reach Destination | | | Solve | Hard | - | |
| 2050. Parallel Courses III | | | Solve | Hard | | |
| 2065. Maximum Path Quality of a Graph | | | Solve | Hard | | |
| 2076. Process Restricted Friend Requests | | | Solve | Hard | | |
| 2092. Find All People With Secret | | | Solve | Hard | | |
| 2097. Valid Arrangement of Pairs | | | Solve | Hard | | |
| 2123. Minimum Operations to Remove Adjacent Ones in Matrix | | | Solve | Hard | | |
| 2127. Maximum Employees to Be Invited to a Meeting | | | Solve | Hard | | |
| 2203. Minimum Weighted Subgraph With the Required Paths | | | Solve | Hard | | |
| 2204. Distance to a Cycle in Undirected Graph | | | Solve | Hard | | |
| 2242. Maximum Score of a Node Sequence | | | Solve | Hard | | |
| 2246. Longest Path With Different Adjacent Characters | | | Solve | Hard | | |
| 2247. Maximum Cost of Trip With K Highways | | | Solve | Hard | - | |
| 2290. Minimum Obstacle Removal to Reach Corner | | | Solve | Hard | | |
| 2307. Check for Contradictions in Equations | | | Solve | Hard | | |
