Sudoku is a fascinating brain game often called as Rubik's cube of 21st century. From a 3 year old child to an 80 year old person can enjoy Sudoku in her own way.
Very little is available in the area of "How to solve Sudoku of various difficulty levels". To address this vacuum, we have created Sudoku solutions of,
Use the resources to become a Sudoku expert from a Sudoku beginner.
Very Hard Sudoku Level 4 Game 29 Solved by X wing diagonal test. One pair of locked digits placed diagonally opposite are tested invalid for breakthrough.
The Sudoku hard level 4 game 28 is solved by identifying and exploiting an enhanced Swordfish pattern of digits formed by four pairs of locked digits.
Level 4 Game 27 Sudoku hard X wing breakthrough achieved after getting other breakthroughs by double digit parallel digit scan and single digit lock.
Sudoku level 4 game 26 solved by Sudoku hard solution techniques of single digit lock and double digit scan among others. Each technique explained.
The Sudoku Hard level 4 Game 25 is solved by identifying first an X Wing digit formation and then discovering a valid digit by X wing digit reduction.
Very hard Sudoku level 4 game 24 solved by test of linked pairs of locked digit chains resulting in conflict of same digit in two cells of same column.
Very hard Sudoku level 4 game 23 solved by test of linked pairs of locked digit chains resulting in conflict of same digit in two cells of same column.
Very hard Sudoku level 4 game 22 solved by analysis of linked pairs of locked digit resulting in conflict of same digit in two cells of same column.
Very hard Sudoku level 4 game 21 is solved step by step using valid diagonal test of an asymmetric X wing digit formation for easy understanding.
Very hard Sudoku level 4 game 20 is solved step by step using advanced Sudoku techniques and strategy so that it is easy to follow how to solve hard Sudoku.
