▁school ▁and ▁university ▁students . ▁ ▁History ▁Sh og ak uk an ▁intended ▁for ▁the ▁Da ij isen ▁to ▁directly ▁comp ete ▁with ▁I wan ami ' s ▁popular ▁K ō j ien ▁desktop ▁dictionary , ▁which ▁was ▁a ▁best s eller ▁through ▁three ▁ed itions ▁( 1 9 5 5 , ▁ 1 9 6 9 , ▁ 1 9 8 3 ). ▁The ▁Da ij isen ▁followed ▁upon ▁the ▁success ▁of ▁two ▁other ▁K ō j ien ▁compet itors , ▁San se ido ' s ▁Da ij ir in ▁(" Gre at ▁forest ▁of ▁words ", ▁ 1 9 8 8 , ▁ 1 9 9 5 , ▁ 2 0 0 6 ) ▁and ▁K ō d ans ha ' s ▁color - ill ustr ated ▁N ih ongo ▁Da ij iten ▁(" Gre at ▁dictionary ▁of ▁Japanese ", ▁ 1 9 8 9 , ▁ 1 9 9 5 ). ▁All ▁of ▁these ▁diction aries ▁we igh ▁around ▁one ▁kil ogram ▁and ▁have ▁about ▁ 3 0 0 0 ▁pages . ▁ ▁The ▁ 1 st ▁edition ▁Da ij isen ▁( 1 9 9 5 ) ▁included ▁over ▁ 2 2 0 , 0 0 0 ▁entries ▁and ▁ 6 0 0 0 ▁all - color ▁illustr ations ▁and ▁photograph s . ▁The ▁chief ▁editor ▁ ▁was ▁also ▁chief ▁editor ▁of ▁the ▁directly ▁compet ing ▁Da ij ir in ▁dictionary . ▁Other ▁Da ij isen ▁edit ors ▁included ▁A kih iko ▁I k eg ami ▁( 池 上 秋