In Tetris, keep the stack low, avoid covered holes, and maintain a usable well for line clears. Use previews and hold to plan piece order rather than fixing one placement at a time. T-spins, combos, and perfect clears are valuable only when the stack remains recoverable. Learn the rotation system, lock delay, and scoring rules of the version. For an input issue, include mode, board, queue, held piece, client, controls, refresh rate, frame rate, and exact action.