NYTimes 17th March Sudoku is very hard, but you can have quick elegant solution with super powered Sudoku techniques such as triple digit scan.
In solving the NYTimes very hard Sudoku 28 Feb 2021, critical last major breakthrough reached only after a few new fresh unique valid digits.
NYTimes 29th Apr Very hard Sudoku is sure very hard, but the much sought for rare X wing advanced Sudoku digit pattern formed for critical breakthrough.
The NYTimes 28th Apr Very hard Sudoku needs repeated breakthroughs based on fundamental rules, as powerful Sudoku patterns are not readily available.
NYTimes Super Hard Sudoku 27 Apr 2024 needed repeated major breakthroughs to reach the critical one after which the puzzle was broken wide open.
The low count of 21 filled cell NYTimes 26th Apr Very hard Sudoku needs expertise to break through the well-hidden clues. Chip away patiently.
Search for well-hidden clues keenly to solve NYTimes 25th April Very hard Sudoku. Look for a single digit appearing in possible digits in a row or column.
Expert Sudoku solution used Triple digit, Double digit and Parallel digit scans for the critical breakthrough in NYTimes very hard Sudoku 20 Feb 2021.
NYTimes Very Hard Sudoku 22 Apr 2024 could be broken open quite late in the solution process with identification of the critical breakthrough.
NYTimes Very Hard Sudoku 21 Apr 2024 has as many as 26 filled cells, many for a hard Sudoku. But don't be fooled, this one is a real very hard Sudoku.
