Topic: backtracking-problem / Level: intermediate

• 1002. Solve the N-Queens problem for an 8x8 chessboard, ensuring no two queens threaten each other in any solution.
• 1003. Generate all possible permutations of a string of length n, including duplicates in the input characters.
• 1004. Find all combinations of k elements from a given array of n elements without repetition.
• 1005. Generate all valid combinations of parentheses for n pairs of parentheses, ensuring each combination is balanced.
• 1006. Solve the Sudoku problem for a 9x9 grid by finding all valid arrangements of numbers from 1 to 9.
• 1007. Print all unique subsets of an array that may contain duplicate elements, ensuring no duplicate subsets are returned.
• 1008. Find all unique palindromic substrings in a given string, with each substring counted only once.
• 1009. Solve the "Word Search II" problem by finding all words in a grid that are present in a given dictionary.
• 1010. Generate all possible ways to color a graph with k colors such that no two adjacent vertices share the same color.
• 1011. Solve the "Combination Sum" problem by finding all unique combinations of numbers that sum to a target value.
• 1012. Print all valid configurations of a binary tree based on specific node values given in a level-order format.
• 1013. Find all ways to partition a string into substrings where each substring is a palindrome.
• 1014. Generate all distinct combinations of coins that sum to a specific target value, allowing for each coin to be reused.
• 1015. Solve the "Knights Tour" problem on an 8x8 chessboard, finding all valid sequences of moves for the knight.
• 1016. Find all unique combinations of integers that can be combined to form a target number, ensuring no duplicates are present.
• 1017. Print all valid sequences of operations that can be performed on an array of numbers to reach a target value.
• 1018. Generate all unique combinations of k items from a list of n items, allowing for duplicate selections.
• 1019. Solve the "Subset Sum" problem for a given set of integers, finding all subsets that sum up to a specific target.
• 1020. Find all valid arrangements of 8 rooks on a chessboard such that no two rooks can attack each other.
• 1021. Generate all possible combinations of tasks that can be scheduled given their start and end times.
• 1022. Solve the "Hamiltonian Cycle" problem for a graph, determining all valid cycles that visit each vertex exactly once.
• 1023. Find all unique ways to arrange k items from a set of n items, allowing for some items to be repeated.
• 1024. Print all valid sequences of moves for a pawn in chess based on given starting and ending positions.
• 1025. Generate all distinct arrangements of a list of words that can be formed into valid sentences.
• 1026. Solve the "Tug of War" problem by finding valid partitions of a set that minimize the difference in sums.
• 1027. Find all possible combinations of items from a menu that can be selected to reach a specific budget.
• 1028. Print all valid configurations for a magic square of order n, ensuring all rows, columns, and diagonals sum to the same value.
• 1029. Generate all valid sequences of moves for a knight on a chessboard with specified restrictions.
• 1030. Solve the "Crossword Puzzle" problem by filling in a grid based on given words and conditions.
• 1031. Find all unique ways to allocate tasks among workers based on their skills and preferences.
• 1032. Print all valid paths from the top-left corner to the bottom-right corner of a grid, avoiding blocked cells.
• 1033. Generate all possible combinations of items that can be packed into a knapsack given weight constraints.
• 1034. Solve the "Maximum Subarray" problem by finding the contiguous subarray with the largest sum in an array.
• 1035. Find all unique arrangements of elements in a multiset based on their counts in the input.
• 1036. Print all valid arrangements of people in a circle based on friendship constraints.
• 1037. Generate all valid configurations of a team lineup based on player availability and performance.
• 1038. Solve the "Subset Sum" problem where you must find all subsets of numbers that equal a target sum.
• 1039. Find all possible sequences of moves in a board game while adhering to specific rules and restrictions.
• 1040. Print all valid configurations of a puzzle board based on given constraints.
• 1041. Generate all distinct ways to arrange n different colors in a pattern based on provided rules.
• 1042. Solve the "Meeting Rooms II" problem by finding the minimum number of meeting rooms required.
• 1043. Find all unique paths in a directed acyclic graph (DAG) from a given start node to an end node.
• 1044. Print all valid combinations of digits that can be formed from a number while maintaining uniqueness.
• 1045. Generate all possible ways to arrange k books on a shelf from a collection of n books.
• 1046. Solve the "Edit Distance" problem by finding the minimum number of operations required to convert one string into another.
• 1047. Find all valid configurations of a board game where players must adhere to specific movement rules.
• 1048. Print all unique combinations of scores that can be achieved in a game based on different scenarios.
• 1049. Generate all valid sequences of moves in a chess game where players alternate turns and follow specific rules.
• 1050. Solve the "Combination Lock" problem by determining all valid combinations to unlock a device.
• 1051. Find all unique arrangements of fruit in a basket where some fruits are identical and others are distinct.

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