Mine Field Unblocked

A mine-finding grid that punishes risky clicks but never makes you flip a coin.

Mine Field unblocked is a grid puzzle about finding hidden mines with pure logic. Numbers on opened squares tell you how many mines touch them, and you use those clues to uncover every safe square. The twist is that the mines do not exist until you need them, so the game can never beat you with bad luck, only with a missed clue.

How Mine Field Works

A number counts the mines in the eight squares around it, diagonals included. A square with no number has zero mines nearby, and opening one also opens the empty area around it. Open all the safe squares to win. Your opening move can never hit a mine.

The unusual part is a logic solver that decides where mines go only when you click. Here is how it treats you:

  • If the clues prove a square is empty, opening it is always fine.
  • If you gamble on an unproven square while a provable one is available, your gamble becomes a mine.
  • If the border offers nothing provable at all, gambling is allowed, and any border square that could be empty is empty.

So every turn comes down to one question: is there a square I can prove is safe? If the answer is yes, your job is to find it before clicking anything else.

Your First Minute on the Board

The page loads straight into a 10 by 10 board with 20 mines. Click any square near the middle. Because the first click is safe, you will usually open a patch of blank squares ringed by numbers.

Now read the edge of that patch. Look for a 1 that touches only one hidden square. That square must be a mine, so right-click it to plant a flag. Next, find a number whose mines are all flagged. Every other hidden square around it is safe, and you can open them all at once by double-clicking or middle-clicking that number. Repeat this loop of flag, then clear, and the board opens up fast.

The line under the grid shows “Mines” with your flag count over the total, so you always know how many are left to find.

Board Sizes and Presets

Four buttons set up a game quickly:

  • Easy: 8 by 8 with 8 mines, a good warm-up.
  • Medium: 10 by 10 with 20 mines, the default board.
  • Hard: 15 by 15 with 50 mines, a longer session.
  • Expert: 50 mines packed into a 10 by 10 grid, where half the board is dangerous.

You can also type your own width and height, each from 1 to 30, plus a mine total up to one less than the number of squares. Press New game to build it.

Options Below the Board

A few switches change how you play:

  1. Give me a hint flashes a short message. It tells you if a safe square exists, if you are forced to guess, if a flag sits on a square that could be empty, or if every border square is deadly and you must play somewhere else.
  2. Undo wakes up after a loss and takes back the move that ended the round, so you can keep solving the same board.
  3. Countdown mode makes each number show only the mines you have not flagged yet around it. Busy areas get much easier to read.
  4. Safe mode needs a double-click before a hidden square opens, which stops slips from a twitchy trackpad.
  5. Allow guessing anywhere extends guess protection to squares far from the open area.

There is also a Debug mode box that shows the solver’s markings while you play. It is fun to peek at once, but it gives away the answers.

Mine Field Tips and Strategy

  • Flag mines the moment you are sure. Clearing around a fully flagged number is the fastest move in the game.
  • Scan the whole border before you guess. A provable safe square is often hiding on a side you have not checked.
  • Learn the common pairs. Two numbers side by side often share hidden neighbors, and subtracting one from the other tells you which squares are clear.
  • Use the hint button as a yes or no check, not a crutch. If it says safe cells exist, keep looking until you find them.
  • After a loss, study the dots, exclamation marks and question marks. They point right at the deduction you missed.

Mistakes New Players Make

The biggest one is treating a guess like a coin flip. In most mine games a 50/50 is just bad luck, but here a guess made while a safe move exists always loses. Slow down instead.

Another is clicking far away from the open area when stuck. Unless Allow guessing anywhere is ticked, the protection for forced guesses only covers squares that touch the numbers. Finally, a wrong flag can trick you into clearing a real mine. The hint button will warn you if one of your flags could actually be empty.

Playing on a Chromebook or Phone

A mouse gives you the most control: left-click to open, right-click to cycle a flag, a question mark, then blank again, and double-click or middle-click a number to clear its neighbors. On a Chromebook trackpad, a two-finger tap works as the right-click.

On a touch screen, tap to open a square and press and hold for half a second to cycle the flag marks. Fat-finger taps are the main risk on a phone, so turn on Safe mode there. The board resizes when the window changes, and portrait works fine for small grids.

Similar Games to Try Next

Mine Field suits a quiet ten-minute break where you want to think rather than react. If you like it, browse more puzzle games or try one of these:

  • Sudoku uses number logic too, but every clue is given at the start and nothing is hidden.
  • Light Flip is a grid of switches where each press affects its neighbors.
  • Tower of Hanoi swaps deduction for planning a fixed sequence of disk moves.

Quick facts

Category
Puzzle Games
Devices
Phone, tablet & computer
Controls
Mouse, Touch
Players
1 player
Price
Free, no sign-up
  • logic
  • puzzle
  • grid
  • mines
  • deduction

How to control Mine Field

ActionMouseTouch
Reveal a squareLeft-clickTap
Cycle flag, question mark, blankRight-clickPress and hold for half a second
Open all neighbors of a number whose mines are flaggedDouble-click or middle-click the number—
Reveal a square in safe modeDouble-click—
Start a new boardClick "New game"Tap "New game"

Made by

Paweł Marczewski

Code license
MIT
Art & sound
MIT (the author's own SVG sprites; Bootstrap 4.3.1 and long-press-event, both MIT)

Mine Field questions

Where are the mines hidden at the start?

Nowhere yet. The board has no hidden layout. A solver fills in mines during play, and a risky click lands on one whenever you skipped a square the clues had already cleared.

When is it okay to guess?

Only when the clues leave you stuck, with no provable safe square touching the revealed region. Then a border pick that might be empty is guaranteed empty. Far-off picks only get that protection with the Allow guessing anywhere box ticked.

Can I play Mine Field on a Chromebook or phone?

Yes. It runs in the browser with a mouse, trackpad or touch screen. On touch, press and hold a hidden square for half a second to place a flag instead of right-clicking.

How do you win Mine Field?

Open every square that is not a mine. The status line under the board switches from the mine counter to "You win!" once only mines are left covered.

What are the small symbols after I lose?

When a round is lost, border squares get labeled. A dot marks one you could have proven empty, an exclamation mark marks a sure mine, and a question mark means the clues allowed both.

Does Mine Field save my game?

No. Each board lives only in the open tab, so reloading or pressing New game starts fresh. The size and option boxes reset too, so set them again after a reload.

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