This crossword No. 505 clues and answers were published on Sun 15 May 2005 and the puzzle can be visited by following The Guardian Speedy Crossword No. 505 link.
All Across Clues and Answers:
1-across – Personality disorder : SCHIZOPHRENIA
8-across – Treaty, agreement : PACT
9-across – Aristocrat : NOBLEMAN
10-across – Ascribed : ATTRIBUTED
12-across – Political grouping : CAUCUS
14-across – Duck-like walk : WADDLE
15-across – Periodical bulletin : NEWSLETTER
19-across – Part of the Freudian unconscious : SUPEREGO
20-across – Weft : WOOF
21-across – Embarrassingly reveal a secret : SPILLTHEBEANS
All Down Clues and Answers:
2-down – Empty words : CLAPTRAP
3-down – Bury : INTER
4-down – Collection of works : OMNIBUS
5-down – Custom : HABIT
6-down – Corrected : EMENDED
7-down – Islamic minister : IMAM
11-down – Indicator of rarity : BLUEMOON
13-down – Solidify : CONGEAL
14-down – Greet warmly : WELCOME
16-down – Snatch from : WREST
17-down – Leather strap : TAWSE
18-down – Witticism : QUIP
This crossword has in total 22 where 10 are across and 12 are down.