Classic number placement with flexible modes.

Build expressions and discover independent solutions.

Restore the board one careful move at a time.

Merge equal tiles across three board modes.

Connect matching numbers without crossing paths.

Shade selected numbers without adjacent shaded cells while keeping every white cell connected.

Join every island into one bridge network.

Complete intersecting sums with unique digits.

Separate numbered islands with a continuous wall.

Place heights using visibility clues.

Draw one closed loop using number, shaded-cell, circle, or midpoint clues.

Locate the fleet through row and column logic.

Balance ○ and × without triples or duplicate lines.

Control light and dark with two distinct logic modes.

Divide the board into rectangles whose areas match the clues.

Fill connected regions whose size matches their number.

Use white-count, black-count, or room-count clues to find the shaded cells.

Fill numbered rooms under spacing or arrow rules.

Fit every listed number into the crossing slots exactly once.

Shade domino pairs or L/I/T/S tetrominoes inside divided regions.

Color whole tiles to satisfy every directional count.

Draw borders to divide the board into connected five-cell regions.

经典数字填入，支持不同模式与难度。

组合四则表达式，寻找不同独立解。

通过谨慎移动逐步恢复数字顺序。

在三种棋盘模式中合并相同数字。

连接相同数字，路径不能交叉。

涂黑部分数字，让行列无重复并保持白格连通。

用桥梁将所有岛屿连接成整体。

用不重复数字完成交叉求和。

用连续墙壁分隔指定大小的岛屿。

根据可见数量放置不同高度楼宇。

根据数字、黑块、圆圈或中点提示绘制一条完整回路。

通过行列线索推断整支舰队的位置。

平衡 ○ 与 ×，不可三连，行列也不能重复。

在开灯与关灯两种规则中，用逻辑控制光与暗。

将棋盘划分为面积与数字一致的矩形。

填写数字，让相连区块的格数与数字一致。

根据数白、数黑或房间提示，推理并涂出正确黑块。

在无箭头与有箭头两种规则中，为房间填写连续数字。

将数字列表逐一填入长度相同且相互交叉的空位。

在区域内涂出二连骨牌或L、I、T、S四连块。

整块涂黑或留白，使每个方向数字成立。

绘制边界，将棋盘划分为若干个五格连通区域。