Sudoku Conquest

Sudoku Conquest is a free online sudoku platform where your mission is to fill a 9x9 grid with digits so that each row, column, and 3x3 box contains the numbers 1 through 9 exactly once.

Each puzzle starts with a partially filled grid. Click a cell, type a number, and work through the logic. Every puzzle has exactly one solution, and you can solve it through deduction alone, no guessing required.

• Choose from seven difficulty levels: easy, intermediate, hard, challenging, expert, extreme, and einstein.
• Fill the 9x9 grid so every row, column, and 3x3 box contains 1 through 9 with no repeats.
• Click any empty cell and enter a number.
• You can start over anytime or jump to a new puzzle at the same difficulty.
• Available in 20 languages for global accessibility.
• Also offers kakuro and hitori puzzles if you want a break from sudoku.

Why we like it:

• ✅Seven difficulty tiers mean you can ease in or jump straight to brain-melting challenges.
• ✅Clean interface with no clutter, just you and the grid.
• ✅Unlimited puzzles at every level, so you can play as much as you want.

Hint: Start by scanning for rows, columns, or boxes that already have the most numbers filled in. The fewer blanks, the faster you'll spot what's missing.