Mines Calculator: Odds & Multiplier per Click

On a 5×5 board with m mines, the first click is safe with probability (25 − m) / 25. Every safe click removes a safe tile, so the chance of surviving k clicks in a row is C(25 − m, k) / C(25, k). With 3 mines the first click is 88% safe, but 10 clicks in a row survive only 19.8% of the time.

A fair multiplier is 1 divided by the chance of surviving all your clicks. The game then keeps its house edge: with a 99% RTP the payout is 0.99 ÷ chance. Example: 3 mines and 5 clicks survive 49.6% of the time, so the payout is about 2.00x.

No. Every number of mines and every number of clicks has the same expected return, the game's RTP. In our 1,000,000-round simulation every strategy ended close to −1% of the money wagered. Corners, patterns and "hot tiles" do not change the odds, because each board is random.

Fewer mines and fewer clicks win more often but pay less, so losses come slowly. More mines or more clicks win rarely but pay more, so results swing harder. The average cost per $1 bet is the same.