Brain Out Level 25

Overview

A tic-tac-toe board sits in the middle of the screen with your opponent's X's already placed across several squares and two of your O's on the board. The prompt says you have to win the game. Playing one move at a time, the opponent's existing position already blocks any single two-in-a-row you could build, and a normal turn would end in a draw or a loss. The loophole is that the board accepts two simultaneous touches, so you place two O's with two fingers in one move and complete a winning line at once.

• Difficulty: Regular
• Estimated moves: 2

Step-by-Step Solution

1. Read the current board carefully before placing anything. Note which squares already hold X's and where your two O's are sitting, and trace the rows, columns, and diagonals for possible lines.
2. Check whether a single O move can finish a line. With the opponent's X's spread through the board, no one extra O completes three in a row on a normal turn, which confirms the regular rules will not win this round.
3. Identify the two empty squares that together would give you a full line of three O's. The winning move needs two O's placed in the same gesture rather than one after the other.
4. Put one finger on each of those two target squares at the same time and tap both together. The board registers the two O's simultaneously instead of letting the opponent answer between them.
5. When the two O's land, your three-O line closes across the row, column, or diagonal you chose, and the level recognizes the win.
6. If only one O appears, the second finger did not register in time. Place both fingers back on the two empty squares and tap them together again so the move counts as simultaneous.

The mechanic here is a multitouch simultaneous placement. The game deliberately sets up a board that one-move-per-turn rules cannot win, so the intended workaround is to ignore the turn order and drop two marks at once.

Strategy & Reasoning

A normal tic-tac-toe strategy asks you to build toward a line one square at a time, but the opponent's X's have already covered the straightforward responses. The level therefore breaks the turn-based assumption: the board has no rule preventing two touches at the same instant, and two simultaneous O's can complete a line before the opponent gets another move.

Playing a single O first fails because it does not finish any line, and the opponent then blocks the remaining square. Tapping one winning square and then rushing the second fails as two separate turns, which still lets the opponent respond. Looking for an already completed O line fails because the two existing O's are not yet three in a row. The only route to victory is the paired simultaneous placement.

Tips & Common Mistakes

• Do not play turns one after another against the X's. The position cannot be won with a single O per move, so standard tic-tac-toe strategy will stall or lose.
• Use two fingers at once on the two empty squares of your intended line. The two O's must register in the same gesture; spacing them out as separate taps counts as two turns.
• Re-check which line your two O's complete before tapping. The winning placement needs three O's in a straight row once the pair lands, so pick the two squares that share a line with your existing O.