Star Battle 完全可以不靠滑鼠遊玩，因為每個觸控與指標操作都有對應的鍵盤按鍵。方向鍵移動選取範圍，S 或 Space 放置一顆星，X 將格子標記為空，Delete 或 Backspace 將格子清除回未知狀態，Enter 則會觸發與螢幕上按鈕相同的 Check Battle 動作。5 by 5 的棋盤會容納在一個狹窄的行動裝置容器內，選取外框會跟隨鍵盤游標移動，而控制項符合共用最低觸控高度，因此擺在桌上的平板、資訊服務站模式的觸控螢幕，或沒有可用指標的無障礙設置，都能從頭到尾完成這道謎題。原生按鈕會將每個格子的列、欄、區域與目前狀態開放給輔助技術使用，整個實作完全在瀏覽器內執行，不使用任何套件相依、無需帳號、無需權限，也無需上傳。
How to Play Star Battle Without a Mouse
介面的鍵盤鏡像意味著沒有任何步驟需要指標裝置。每個鍵盤動作都對應到一個明確的螢幕控制項，因此下面的工作流程可在 Star Battle puzzle page 上重現一個完全不需滑鼠的操作過程。
- Open the game and let the first cell load as selected. Press the arrow keys to move the highlighted outline to any cell on the 5 by 5 board.
- Press S or Space to place a star in the selected cell when your deduction says a star belongs there.
- Press X to mark the selected cell empty when no star can fit because of row, column, region, or no-touch rules.
- Press Delete or Backspace to clear the selected cell back to its original unknown state if you change your mind about a star or an X.
- Repeat the previous steps until every one of the 25 cells is decided as either a star or an empty cell.
- Press Enter to trigger the Check Battle action, the same check the on-screen button runs, and read whether the placement is the unique 1,000-point solution.
- If the board is incomplete, the game tells you that cells are still unknown and lets you keep editing without spending a mistake.
- If the board is complete but wrong, the game consumes one mistake and leaves the board editable so a single deduction can be repaired.
- If you press Check Battle a second time on a fully decided but still invalid board, the run deadlocks and only Restart clears it.
- On a correct, fully decided board, the game freezes all controls, awards exactly 1,000 points, and stops accepting input.
The double-Escape boss key also works entirely from the keyboard. Press Escape twice quickly to cover the puzzle with a spreadsheet-style screen, then press it twice again to return. Restart returns to the same original region map with all 25 cells unknown, zero mistakes, zero score, and the first cell selected, so a mouse-free session can be reset, retried, or rehearsed indefinitely without a pointer.
Keyboard Controls Reference
The mapping below reflects the exact controls shipped with the game. The values come directly from the product contract that defines how the browser runs every interaction, not from category assumptions.
| Action | Keyboard Key | Touch or Mouse Equivalent |
|---|---|---|
| Move selection | Arrow keys | Tap or click an adjacent cell |
| Place a star | S or Space | Tap the Place Star button or cycle to the star state |
| Mark cell empty | X | Tap the Mark Empty button or cycle to the empty state |
| Clear cell | Delete or Backspace | Tap the Clear button or cycle back to the unknown state |
| Check battle | Enter | Tap or click Check Battle |
| Boss key cover | Double-Escape | Not exposed on the touch surface |
| Restart puzzle | Not bound | Tap or click Restart |
Clicking or tapping a cell also cycles through the three states, so a mixed session is possible. The three explicit buttons for Place Star, Mark Empty, and Clear exist so a player who already knows the desired state can apply it without cycling, which helps when repeated presses would otherwise toggle through unwanted states.
Understanding the 5 by 5 Board Layout
The board is a fixed 5 by 5 grid divided by heavy borders into five irregular connected regions labeled A through E in the corner of every cell. The unequal region sizes create the deductions: A has two cells, B has eight, C has two, D has five, and E has eight. Region size does not change the requirement of exactly one star, so the two-cell regions are not easier in any structural sense; they simply constrain where a star can sit. Every cell belongs to one and only one region, every region is connected through shared sides rather than isolated pieces, and the region map was authored for this specific game rather than imported from a published booklet or another site.
The five regions form the central clue. With one star per row, one per column, one per region, and a no-touch rule that forbids sharing a side or a corner between any two stars, the search space is small enough for the row-by-row bounded backtracking solver to audit in one pass. The solver visits one row at a time, rejects a column or region already used, rejects a column adjacent to the previous row's star to satisfy the no-touch rule, and stops the moment a second complete placement appears. For this board the search returns exactly one legal answer, which the game accepts and the deterministic 1,000-point reward then unlocks.
How the Unique Solution Is Verified
Uniqueness is not asserted from a stored answer. The implementation includes an independent bounded backtracking solver that searches for any other placement meeting the same row, column, region, and no-touch rules. The search caps at two answers and requires a final count of one before the puzzle is approved. When the check completes, the puzzle's five-star answer is unique, the board is accepted, and the 1,000-point reward is unlocked once on a correct complete submission. A fully decided but invalid board keeps the game editable so that one mistake can be repaired, while a second such check deadlocks the run and forces a Restart rather than silently corrupting the score.
Privacy, Storage, and Local Scoring
All moves, checks, uniqueness logic, and best-score storage run in the browser. The game uploads nothing, requires no account, requests no device permission, calls no paid service, and adds no package dependency. Best score is kept locally so the keyboard-only session finished today is the same number that reappears the next time the page loads. The shared game shell supplies score display, locally stored best score, Restart, and the double-Escape boss key. Pressing Escape twice quickly covers the puzzle with a spreadsheet-style screen, and pressing it twice again reveals the board, so even the privacy flow has a keyboard path that needs no pointer.
This workflow does not depend on a touch screen, a working mouse, a persistent internet connection, or any device permission. The accessibility-friendly design means a screen reader can read each cell's row, column, region, and current state through the native button labels, and the keyboard cursor is always visible through the selection outline. A mouse-free playthrough is therefore the expected interaction path, not a fallback, and every action that exists on the touch surface has at least one keyboard equivalent.
This puzzle is recreational and uses the familiar one-star ruleset documented in the 30th World Puzzle Championship instruction booklet, with an independent cross-check against the standard rules. The 1,000-point reward only means the board matched its deterministic rules before the second invalid complete attempt; the score does not measure intelligence, attention, memory, or any other personal trait, and it should not be used to compare, rank, diagnose, or label people.
For a deeper look, see Grid Battle Strategy Game: Plan Ten Actions, Score 1,000.
For a deeper look, see Dinosaur Game: Play a Free Browser Runner.