覆面ふくめん算ざん

fukumen zan

1. Not a masked calculation.; Not a cryptarithm.

1. Was a masked calculation.; Was a riddle.

1. In a cryptarithmetic puzzle; Covered arithmetic

1. Masked arithmetic; Cryptarithmetic

1. It is not a masked calculation.; It is not a riddle.

1. It's not a masked calculation.; It's not a riddle.

1. Was a masked calculation.; Was a riddle.

1. Covered calculation; Cryptoarithmetic

1. Is not a masked calculation.; Is not a cipher.

1. Wasn't a masked calculation.; Wasn't a cover-up.

1. Probably a riddle.; Probably a masked calculation.

1. Was not a masked calculation.; Was not a riddle.

1. Wasn't a mask.; Wasn't disguised.

1. Probably a riddle.; Likely a cryptarithm.

1. Was not a masked calculation.; Was not disguised.

1. If it were a masked arithmetic problem; If it's a masked arithmetic problem

1. If it is a masked arithmetic problem; If it were a masked arithmetic problem

1. If/when masked calculation; If/when a cryptogram