額外區域
對角線數獨
兩條主對角線也必須包含1–9
如何 對角線數獨 運作
Both corner-to-corner lines must hold nine different digits, giving the grid two bonus houses to scan. The 17 cells they cover are the most restricted on the board, so working the diagonals first usually cracks the opening. It feels gentler than the classic game at low levels, while expert grids hide their key move on the line you forgot to check.
如需完整規則、解題範例及解題技巧，請閱讀完整 如何遊玩 對角線數獨 指南。
標準數獨規則仍然適用
與所有數獨變體一樣，對角線數獨 建立在經典的9×9基礎上。每行、每列和每個3×3宮都必須包含每個數字1到9恰好一次。變體約束是 添加在上面 這些標準規則，從不取代它們。
如果你是數獨新手，先學習 基本規則和技巧 在嘗試變體之前。