AdvanceLeetcode Backtracking Practice QuestionsBacktracking Problems on LeetCode 46. Permutations 47. Permutations II 39. Combination Sum 40. Combination Sum II 78. Subsets 90. Subsets II 77. Combinations 216. Combination Sum III 22. Generate Parentheses 51. N-Queens 52. N-Queens II 79. Word Search 212. Word Search II 131. Palindrome Partitioning 93. Restore IP Addresses 17. Letter Combinations of a Phone Number 282. Expression Add Operators 491. Increasing Subsequences 526. Beautiful Arrangement 254. Factor Combinations