6.50 Gibbon: the Ruins of Rome

7.15 Technology: More than Meets the Eye

7.40 Nuclear Weapons Systems

8.5 Living with Cracks

8.30 Design: Assembly of Lorries

8.55 Sociology: Life History Interviews

9.20 Balzac and the Visual Arts

9.45 The Romantic Poets in the Alps

10.10 Chemistry: Caffeine Project

10.35 Michelangelo: The Last Judgement

11.0 Ethnic Minorities: the Promised Land

11.25 A Telescope in Space

11.50 Marking Time

12.15 Statistics: Lines, Before and After

12.40 Words to that Effect

1.5 Changing Countryside: the Coast

1.30 Modern Art: Kirchner

Kasparov v Portisch
Reeling from his defeat last week by Nigel Short , World Champion Garry Kasparov today tackles Hungary's
Lajos Portisch. It's a critical match as Kasparov, Portisch and Short are joint leaders in the OHRA Tournament.
Jeremy James introduces the game, with comments by Bill Hartston.
Videotape editor JOHN PAROUSSI Producer WENDY STURGESS
(The moves are on Ceefax page 268)

Starring Ann Sheridan, Steve Cochran
Eight years after deserting his wife Bess and two children, Matt Ballot returns home. Working on Bess's farm as a hired hand he finds he has to win back the respect of the town as well as the love of his wife.
Films: page 20

The World Professional Snooker Championship Round Two
The two afternoon matches should see Tony Knowles (seeded 5) finish his match against Silvino Francisco
(12), while on the other table Alex Higgins (7) should be finishing his match against Terry Griffiths (10). DAVID VINE introduces coverage from the Crucible Theatre in Sheffield.
Commentators TED LOWE
JACK KARNEHM , CLJVE EVERTON Summarisers:
JIM MEADOWCROFT
JOHN VIRGO , JOHN SPENCER Television presentation KEITH PHILUPS
MIKE ADLEY. PETER HAYWARD Producer KEITH MACKENZIE
Executive producer NICK HUNTER

The second of five programmes with Andrew Sachs and his guide from Barcelona, Manuel

Andrew goes for a boat-ride, enjoys a sardine fiesta on the beach, does a bit of Spanish homework, encounters an old friend, discovers the difference between Cataluna and Spain, explores the Dali museum in Figueras and ends up dancing Sach's sardana in the town square at Tossa.
(e)
(Complementary radio programme tomorrow Radio 4 VHF/FM, 5.30pm)

Debbie Thrower with today's latest news and sport. Moira Stuart reviews a week of news in pictures - with subtitles.
Followed by Weather

On the eve of BBC2's Sunday evening opera season, which will be broadcast simultaneously on Radio 3 in stereo, Jane Glover , the conductor, and Julian Budden , a leading authority on 19th-century Italian opera, discuss Verdi's astonishing creative development which spanned more than 40 years.
This Verdi series will feature several of the most important international opera productions of 1986. Tomorrow's Nabucco, Verdi's first success, marked the debut of RICCARDO MUTI as La Scala 's musical director. On 3 May LUCIANO PAVAROTTI stars as the assassinated Swedish King Gustavus HI in Un ballo in maschera, in which
CLAUDIO ABBADO inaugurated his new post as musical director of the Vienna State
Opera. And on 10 May comes PETER STEIN 'S magnificent production of Otello from the Welsh National Opera. ' Director JANE WALKER
(Verdi's Nabucco, tomorrow 7.45pm)
0 FEATURE: page 16

The World Professional Snooker Championship Round Two
All second-round matches are over the best of 25 frames as the championship goes into the second week of this Diamond Jubilee year.
Tonight should see
Kirk Stevens (seeded 9) and Willie Thorne (8) or Stephen Hendry finishing, while on the other table if it's all going to form Tony Meo (11) will be up against a very tough opponent in Jimmy White (6). Introduced by DAVID VINE

Dramatised in four parts by ROSEMARY ANNE SISSON starring with Richard Morant
Rowena Cooper and Ray Armstrong
2: The corpse on the rock - suicide or murder?
Harriet Vane and Lord Peter Wimsey believe the evidence points to murder.
Music composed and arranged by JOSEPH HOROVITZ
Producer MICHAEL CHAPMAN
Director CHRISTOPHER HODSON
* CEEFAX SUBTITLES

Ludovic Kennedy presents his selection of the week's television and, with his studio guests, reviews: Q.E.D. (BBC1)
Secret Society (BBC2) Cheers (Channel Four) And in a special report
Ray Snoody asks whether the plans of the BBC and ITV to commission more plays from independent producers will bring fresh ideas to television, or just cost more. Producer CHARLES MILLER

starring with Billy Dee Williams Richard Pryor
The remarkable - and ultimately tragic - life of Billie Holiday , the anniversary of whose birth fell earlier this month, is vividly captured in this screen biography of the singer who emerged from a brothel during the 1930s to become one of the most acclaimed entertainers of the century. Ill-fated love affairs, racial prejudice, drugs and violence all feature in Billie Holiday's tempestuous and tragically brief life.
Screenplay by TERENCE MCCLOY CHRIS CLARK. SUZANNE DE PASSE Based on the book by BILLIE HOLIDAY with WILLIAM DUFTY Produced by JAY WESTON. JAMES S. WHITE Directed by SIDNEY J FURIE
0 FILMS: page 20