alphametic
plural of Whitsunday
(US, rail transport) A railroad employee responsible for a train's brakes, couplings etc.
A puzzle that presents an arithmetic problem with letters in place of the digits, the reader challenged to deduce which digit corresponds to each letter.
plural of internal angle
文字を数字の代わりに使う算術パズルを解くことは驚くほど充実感があり、各文字が徐々に数字の正体を明らかにしていく。
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DiQt
Free
★★★★★★★★★★
