YOU SAID:

when you have eliminated the impossible whatever remains however improbable must be the truth

INTO JAPANESE

あなたが不可能を排除したとき、たとえありそうもない残りが真実であるに違いない

BACK INTO ENGLISH

When you eliminate the impossible, even the unlikely rest must be true

INTO JAPANESE

あなたが不可能を排除するとき、ありそうもない残りでさえも真実でなければなりません

BACK INTO ENGLISH

When you eliminate the impossible, even the unlikely rest must be true