In order to fit answers into the grid, a number of cells had to accommodate two letters, in keeping with the theme of SPACE INVADERS at 40ac. The affected cells had to be highlighted to show the form of a Space Invader from the original arcade game, invented 30 years ago.
Conventions: * = anagram, < = reversal
| No | Answer | Explanation |
|---|---|---|
| Across | ||
| 1 | PITHECANTHROPUS | THE RANCH * in (PIT + OPUS) |
| 10 | TALL | THRALL – HR |
| 12 | BAUSOND | (US + O(rchestra)) in BAND |
| 13 | NEMESES | (Ae)NE(as) + SEEMS * |
| 14 | ON A PLATE | ONE about A PLAT |
| 15 | ÉTUDE | E + DUET * |
| 17 | CZAR | CZ + AR |
| 18 | EXCERPT | R in EXCEPT |
| 20 | STATEROOM | TATE in MOORS < |
| 23 | CLINAMEN | CL + IN + MEN about (te)A |
| 24 | VEERED | D after (VEE + RE) |
| 25 | GALOCHES | (GAE + S) about LOCH |
| 27 | LAP DANCERS | (AP + D) in LANCERS |
| 29 | INSOLATE | N in ISOLATE |
| 31 | EVIL | Hidden |
| 33 | STREET | STET about RE |
| 34 | PINK | Three definitions |
| 36 | CHELATE | Suggested telegram: CHE (Guevara) LATE |
| 38 | PAVILION | P + A VIOLIN * |
| 39 | ENTIA | RODENTIA – ROD |
| Down | ||
| 1 | PENCILS | SLIP < about EN < |
| 2 | INEZ | (maga)ZINE * |
| 3 | TAMARIND | TAMARIN + D |
| 4 | HETES | THESE * |
| 5 | CALESCENCE | COALESCENCE – O |
| 6 | NEAP | P(rotozoan) after (N + EA) |
| 7 | HAUTE | U in HATE |
| 8 | ROSETTE | ROSE + (lo)TTE(ry) |
| 9 | UNDOES | UN + DOVES – V |
| 11 | LONER | L + ONER |
| 12 | BLASTED | B + LASTED |
| 16 | EMBLEMS | ME < + PROBLEMS – PRO |
| 18 | EXAM | AXE < + M |
| 19 | PTERIN | Composite anagram: PTERIN + A → PAINTER |
| 21 | AGALACTIA | AG()LA()IA about A and C(a)T |
| 22 | ROCHELLE | HELL in CORE *; adjective relating to La Rochelle |
| 23 | CLAPTRAP | PAL < in CT + RAP |
| 24 | VERSION | AVERSION – A |
| 26 | LOTE | LO + TE |
| 28 | ANETIC | E in ANTIC |
| 30 | SOKEN | SN about OKE |
| 32 | VIATOR | AVIATOR – A |
| 34 | PLIÉ | PIE about L |
| 35 | NUN | Two definitions, one a Hebrew letter |
| 37 | HEAD | A in (H(igher) + ED) |