`{"id":"759ff01f-f69d-4549-b687-5c1d342e63fa","name":"Queens Combinations - 2d As 2d - Queen Chooses","description":"1. You are given a number n, representing the size of a n * n chess board.\r\n2. You are required to calculate and print the combinations in which n queens can be placed on the \r\n n * n chess-board. \r\n\r\nNote -> Use the code snippet and follow the algorithm discussed in question video. The judge can't \r\n force you but the intention is to teach a concept. Play in spirit of the question.","inputFormat":"A number n","outputFormat":"Check the sample output and question video","constraints":"1 &lt;= n &lt;= 5","sampleCode":{"cpp":{"code":""},"java":{"code":"import java.io.*;\r\nimport java.util.*;\r\n\r\npublic class Main {\r\n\r\n public static void queensCombinations(int qpsf, int tq, boolean[][] chess, int i, int j){\r\n // write your code here\r\n }\r\n public static void main(String[] args) throws Exception {\r\n BufferedReader br = new BufferedReader(new InputStreamReader(System.in));\r\n int n = Integer.parseInt(br.readLine());\r\n boolean[][] chess = new boolean[n][n];\r\n \r\n queensCombinations(0, n, chess, 0, -1);\r\n }\r\n}"},"python":{"code":""}},"points":10,"difficulty":"medium","sampleInput":"2","sampleOutput":"q\tq\t\r\n-\t-\t\r\n\r\nq\t-\t\r\nq\t-\t\r\n\r\nq\t-\t\r\n-\tq\t\r\n\r\n-\tq\t\r\nq\t-\t\r\n\r\n-\tq\t\r\n-\tq\t\r\n\r\n-\t-\t\r\nq\tq\t\r\n\r\n","questionVideo":"https://www.youtube.com/embed/zOmrEPnrrJQ?end=369","hints":[],"associated":[],"solutionSeen":false,"tags":[],"meta":{"path":[{"id":0,"name":"home"},{"id":"0c54b191-7b99-4f2c-acb3-e7f2ec748b2a","name":"Data Structures and Algorithms","slug":"data-structures-and-algorithms","type":0},{"id":"082986ae-d618-4a59-9ab3-6d79056679a4","name":"Recursion and Backtracking For Intermediate","slug":"recursion-and-backtracking-for-intermediate-330","type":0},{"id":"4903ae27-9bed-4ea2-9024-b5126619a1b8","name":"Queens Combinations - 2d As 2d - Queen Chooses","slug":"queens-combinations-2d-as-2d-queen-chooses","type":1}],"next":{"id":"58c854fb-72ed-4419-af18-a8f7663ed069","name":"Queens Combinations - 2d As 2d - Queens Chooses MCQ","type":0,"slug":"queens-combinations-2d-as-2d-queens-chooses-mcq"},"prev":{"id":"af526979-c20a-4e27-9908-f0443236d71e","name":"Queens Permutations - 2d As 2d - Box Chooses MCQ","type":0,"slug":"queens-permutations-2d-as-2d-box-chooses-mcq"}}}`

# Queens Combinations - 2d As 2d - Queen Chooses

1. You are given a number n, representing the size of a n * n chess board. 2. You are required to calculate and print the combinations in which n queens can be placed on the n * n chess-board. Note -> Use the code snippet and follow the algorithm discussed in question video. The judge can't force you but the intention is to teach a concept. Play in spirit of the question.

`{"id":"759ff01f-f69d-4549-b687-5c1d342e63fa","name":"Queens Combinations - 2d As 2d - Queen Chooses","description":"1. You are given a number n, representing the size of a n * n chess board.\r\n2. You are required to calculate and print the combinations in which n queens can be placed on the \r\n n * n chess-board. \r\n\r\nNote -> Use the code snippet and follow the algorithm discussed in question video. The judge can't \r\n force you but the intention is to teach a concept. Play in spirit of the question.","inputFormat":"A number n","outputFormat":"Check the sample output and question video","constraints":"1 &lt;= n &lt;= 5","sampleCode":{"cpp":{"code":""},"java":{"code":"import java.io.*;\r\nimport java.util.*;\r\n\r\npublic class Main {\r\n\r\n public static void queensCombinations(int qpsf, int tq, boolean[][] chess, int i, int j){\r\n // write your code here\r\n }\r\n public static void main(String[] args) throws Exception {\r\n BufferedReader br = new BufferedReader(new InputStreamReader(System.in));\r\n int n = Integer.parseInt(br.readLine());\r\n boolean[][] chess = new boolean[n][n];\r\n \r\n queensCombinations(0, n, chess, 0, -1);\r\n }\r\n}"},"python":{"code":""}},"points":10,"difficulty":"medium","sampleInput":"2","sampleOutput":"q\tq\t\r\n-\t-\t\r\n\r\nq\t-\t\r\nq\t-\t\r\n\r\nq\t-\t\r\n-\tq\t\r\n\r\n-\tq\t\r\nq\t-\t\r\n\r\n-\tq\t\r\n-\tq\t\r\n\r\n-\t-\t\r\nq\tq\t\r\n\r\n","questionVideo":"https://www.youtube.com/embed/zOmrEPnrrJQ?end=369","hints":[],"associated":[],"solutionSeen":false,"tags":[],"meta":{"path":[{"id":0,"name":"home"},{"id":"0c54b191-7b99-4f2c-acb3-e7f2ec748b2a","name":"Data Structures and Algorithms","slug":"data-structures-and-algorithms","type":0},{"id":"082986ae-d618-4a59-9ab3-6d79056679a4","name":"Recursion and Backtracking For Intermediate","slug":"recursion-and-backtracking-for-intermediate-330","type":0},{"id":"4903ae27-9bed-4ea2-9024-b5126619a1b8","name":"Queens Combinations - 2d As 2d - Queen Chooses","slug":"queens-combinations-2d-as-2d-queen-chooses","type":1}],"next":{"id":"58c854fb-72ed-4419-af18-a8f7663ed069","name":"Queens Combinations - 2d As 2d - Queens Chooses MCQ","type":0,"slug":"queens-combinations-2d-as-2d-queens-chooses-mcq"},"prev":{"id":"af526979-c20a-4e27-9908-f0443236d71e","name":"Queens Permutations - 2d As 2d - Box Chooses MCQ","type":0,"slug":"queens-permutations-2d-as-2d-box-chooses-mcq"}}}`

Editor

# Queens Combinations - 2d As 2d - Queen Chooses

medium

1. You are given a number n, representing the size of a n * n chess board. 2. You are required to calculate and print the combinations in which n queens can be placed on the n * n chess-board. Note -> Use the code snippet and follow the algorithm discussed in question video. The judge can't force you but the intention is to teach a concept. Play in spirit of the question.

1 <= n <= 5

## Format

A number n

### Output

Check the sample output and question video

## Example

Sample Input

`.css-23h8hz{color:inherit;font-size:0.875rem;line-height:1.125rem;letter-spacing:0.016rem;font-weight:var(--chakra-fontWeights-normal);white-space:pre-wrap;}2`

### Sample Output

```.css-3oaykw{color:var(--chakra-colors-active-primary);font-size:0.875rem;line-height:1.125rem;letter-spacing:0.016rem;font-weight:var(--chakra-fontWeights-normal);white-space:pre-wrap;font-family:Monospace;}q q - - q - q - q - - q - q q - - q - q - - q q ```

Question Video

Discussions

Show Discussion

Related Resources