Sudoku Hard


This is a sudoku game with hard level, a challenge for puzzle and math enthusiasts, in this hard level only 25 numbers of clues are given, there is no mistakes limit and no time limit, you can focus on solving sudoku problems with this hard level.

Game Instructions:

  • Click the ‘Play Sudoku Hard’ button to generate a game in the level shown at the label of button
  • Click a number 1~9 below or simply press a key of 1~9 in keyboard to get a number in hand. then, click on the cell to put a number.
  • Select a selected number below one more time to toggle note mode on/off.
  • Press shift to toggle note mode on/off.

Clicking the left mouse button will either input a number or remove it if the same number exists in the table/hand. For the middle click or Ctrl + left click, you can use it to jot down a guessed number or remove it if it matches existing numbers in the table/hand. Finally, a right-click is used to remove a number.

We also added Print feature for this game which is the button below the PLAY button.

Can you solve this hard sudoku puzzle?






Challenge Your IQ with Engaging Brain Games

Mastermind Game
Crack the Code: Mastermind Puzzle Challenge
Tower of Hanoi Game
Can you move the whole stack to
Sudoku Hard Game
Can you solve this sudoku hard level
Pipe Dream Game
connect the pipes as far as possible
Chess Pursuit Game
Move your King and save your Queen
2048 Game
2048 – Combine number Tiles in this
Sokoban Game
Solve this sokoban puzzle problem with few
Move Box Game
Move Box – Your Goal is Move
Matchstick Puzzle Game
Improve your brain logic by solving the
2048 Taylor Swift Game
Combine Taylor Swift albums tiles in the
Spelling Bee Game
Find as many words as possible with
Tower Game
Tower Game – Drop the blocks precisely
Connect Pipes Game
Master your logical thinking by playing the
Watermelon Game
Watermelon Game – Combine matching fruits into
Fast Math Game
Improve your mental calculation and reaction time.
Sliding Puzzle Game
Exercise your logical thinking by playing sliding
Hextris Puzzle Game
This puzzle game is inspired by tetris
Couch 2048 Game
Play Couch 2048 game online for free!
Word Search Game
Playing word search is a lot of
Sudoku Insane Level Game
This is sudoku number game with easy

IQuTest.com Would you like to receive notifications on latest updates? No Yes