區間數獨

Lines run between two circled cells, and every digit on the line must fall strictly inside the two endpoint values. Wide-apart endpoints barely constrain; close endpoints choke the line — deducing which is which is the puzzle. Range logic, no sums, mid-tier difficulty.

如需完整規則、範例解題及解題技巧，請閱讀完整 如何遊玩 區間數獨 指南。

與所有數獨變體一樣，區間數獨建立在經典的9×9基礎上。每行、每列和每個3×3宮必須包含每個數字1到9恰好一次。變體約束是 添加在頂部 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。