- Story code
- I DFUN 3-3
- Origin
- Italy
- Title
- Sfida di cervelli
- Pages
- 1
- Layout
- 3 rows per page
- Appearances
- Christopher, Martin Tubbs, Irma [show character portraits]
- Writing
- Giulia Conti
- Pencils
- Federico Bertolucci
- Ink
- Marina Baggio
- Date of first publication
en | chess game |

Publications
(7 countries, 7 publications)
-
Brazil
- Mundo W.i.t.c.h. 2 p. 15 (2005) Menina X Menina
-
Finland
- W.i.t.c.h. Viiden voima 2 - Irma (2005) Älypeli
-
Greece
- Κόσμος Ντίσνεϋ 11 - Έξτρα W.I.T.C.H. Zone p. 049 (2006) Τα μεγάλα μυαλά
-
Italy
- Disney Fun 3 - WZone 2 - Irma (2004) Sfida di cervelli
-
Poland
- W.I.T.C.H. Wydanie Specjalne 2005-08 - Świat Irmy (2005) Tylko dla intelektualistów
-
Spain
- W.i.t.c.h. W Zone 2 (2005) Lucha de mentes
-
Sweden
- W.i.t.c.h. 2006-08 (2006) Hjärnornas kamp