RTK1&3 Edition numbers compared
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ABCDEFGHIJK
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RTK notes
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1. RTK1 (6th Edition) contains 2,200 kanji: the 2,136 Joyo kanji plus 64 added by the author for various reasons, e.g. their value as building blocks.
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2. For the 2,136 joyo kanji I included their official joyo readings only, i.e. those taken from the government list.
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3. For the other 64 kanji I chose readings which seemed the most useful to me. I haven't added readings for RTK3 kanji.
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4. "r" after a reading indicates rare or special. This information is also taken from the official joyo kanji document.
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5. The 23 new joyo kanji that weren't in the old RTK1&3 weren't assigned numbers in those books of course. The "Reviewing the Kanji" website numbered them from 3008 to 3030 so I used those numbers in the spreadsheet.
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6. Nine non-joyo Kanji added to the new RTK1&3 books that weren't in the old ones are all assigned the number 9998 (in the "older editions" number column).
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7. Kanji that were in the old RTK1&3 books but dropped from the new ones are all assigned the number 9999 (in the new editions number column).
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Joyo kanji notes
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The joyo kanji is the official government list of kanji that is taught in schools. It gets updated every thirty years or so.
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The most recent update was in 2010 when 196 kanji were added to the previous list and 5 deleted. As a result the total changed from 1,945 to 2,136 characters.
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The author of "Remembering the Kanji" updated his books to reflect the new lists and the spreadsheet here is intended to clarify those changes.
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