Reversi - Free Online | FunToolX
Use Reversi online for free, no download required. FunToolX offers hundreds of fun online tools.
About this tool
Reversi is a free online game. Classic Othello with AI or two-player mode. Play instantly — no install, no waiting. It runs entirely in your browser — no download or sign-up needed.
On the 8×8 chessboard, the black and white sides take turns to place the pieces. You must be able to flip at least one opponent's chess piece each time you place a piece-all opponent's chess pieces sandwiched between your chess piece and the newly dropped chess piece turn to your color. If a step cannot flip any pieces, skip it.
The game ends when the board is full or when both sides are unable to place pieces. Whoever has the most pieces wins. Strategically, the corner is the most valuable position (will not be flipped), the edge is next, and the middle is the worst (easily flipped). Seize the corner at the beginning, control the edge in the middle game, and calculate the number of endgames.
AI uses a minimax algorithm, and the evaluation function considers factors such as the number of pieces, position weight (the corner is the highest, the edge is the second, and the middle is the lowest), and action power. The deeper the search depth, the stronger the AI but the slower the calculation.
Black-and-white chess (flip chess) online game. After placing a piece, flip the clamped opponent's pieces. In the end, the party with more pieces wins, supporting AI matchups.