九九乘法箭 Kuku

标准数独基础上，沿着箭头的方向，前两格的乘积一定等于其余格按顺序组成的多位数。

Classic rules applied. Additionally, along the direction of the arrow, the first two cell's production must equal to the multi-digit numbers formed by other cells in order.

赛事频率 极低

2019年日本数独锦标赛题型。中文名称为自译，英文名称随用了赛事中的题型名称。