Skip to main content

Kakuro Puzzle

Kakuro is second popular puzzle in Japan after sudoku.The kakuro puzzle is played on 16X16 grid of cells which are filled with Black and White respectively.Apart from top row and leftmost column grid is divided into "entries" lines of white cell by the black cells. The black cells contain a diagonal slash from upper-left to lower-right and a number in one or both halves, such that each horizontal entry has a number in the black half-cell to its immediate left and each vertical entry has a number in the black half-cell immediately above it. These numbers are commonly called "clues".




As you can see we have we have horizontal (3) and vertical clue (4).The main objective of Kakuro puzzle is to fill numbers from 1 to 9 in the white cells such that the sum of each horizontal block should be equal to the number on left horizontal clue and sum of each vertical blocks should be equal to the number on top Vertical clue.You cannot use a number more than once in one block for example for the sum to be 3.You cannot use same digits in addition of 3.

The solution of above puzzle 


Karuko puzzles are NP-complete problem.

Labels:

Comments

Post a Comment

Popular posts from this blog

Tricky Questions or Puzzles in C ( Updated for 2026)

Updated for 2026 This article was originally written when C/C++ puzzles were commonly asked in interviews. While such language-specific puzzles are less frequent today, the problem-solving and logical reasoning skills tested here remain highly relevant for modern Software Engineering, Data Engineering, SQL, and system design interviews . Why These Puzzles Still Matter in 2026 Although most Software &   Data Engineering interviews today focus on Programming, SQL, data pipelines, cloud platforms, and system design , interviewers still care deeply about how you think . These puzzles test: Logical reasoning Edge-case handling Understanding of execution flow Ability to reason under pressure The language may change , but the thinking patterns do not . How These Skills Apply to Data Engineering Interviews The same skills tested by C/C++ puzzles appear in modern interviews as: SQL edge cases and NULL handling Data pipeline failure scenarios Incremental vs ...
23 comments
Read more

Program to uncompress a string ie a2b3c4 to aabbbcccc

Below is the program to uncompress a string #include<stdio.h> #include<conio.h> #include<stdlib.h> int main() { char str[100]="a2b3c4d8u7"; for(int i=0;str[i]!='\0';i++) { if(i%2!=0) { for(int j=0;j<atoi(&str[i]);j++) { printf("%c",str[i-1]); } } } getch(); } Want to become a Data Engineer? Check out below blog posts  1.  5 Key Skills Every Data Engineer needs in 2023 2.  How to prepare for Data Engineering Interviews 3.  Top 25 Data Engineer Questions
2 comments
Read more

Programs and Puzzles in technical interviews i faced

I have attended interview of nearly 10 companies in my campus placements and sharing their experiences with you,though i did not got selected in any of the companies but i had great experience facing their interviews and it might help you as well in preparation of interviews.Here are some of the puzzles and programs asked to me in interview in some of the good companies. 1) SAP Labs I attended sap lab online test in my college through campus placements.It had 3 sections,the first one is usual aptitude questions which i would say were little tricky to solve.The second section was Programming test in which you were provided snippet of code and you have to complete the code (See Tricky Code Snippets  ).The code are from different data structures like Binary Tree, AVL Tree etc.Then the third section had questions from Database,OS and Networks.After 2-3 hours we got the result and i was shortlisted for the nest round of interviews scheduled next day.Then the next day we had PPT of t...
4 comments
Read more