Incidentally, 1103 is another prime, the 185th of an infinite series.
Across
1 Classmate, maybe, officially (8)
FORMALLY – FORM (class) and ALLY (mate)
5 On reflection, it’s a sparkling wine (4)
ASTI – IT’S A reversed (on reflection). Incidentally, a question to conjure with. Why does a mirror reverse left and right, but not top and bottom?
9 Energy old politician displayed in backing House (5)
OOMPH – O{ld} followed by MP (politician) inside (displayed in) HO{use} reversed (backing). This word of obscure origin can mean vitality, enthusiasm, sex-appeal or personal magnetism, so using energy as a definition is not too much of a stretch.
10 Cat seen by water in French country house (7)
CHATEAU – CHAT and EAU (French for cat and water respectively). This doesn’t imply that the said country house is necessarily in France, but it could be.
11 Doctor finds a clue is not secret (12)
UNCLASSIFIED – Clever anagram where the anagrind (anagram indicator) is ‘doctor’ and the anagrist (the set of letters to be doctored) is [FINDS A CLUE IS]
13 Term the Spanish put about for glossy coating (6)
ENAMEL – EL (Spanish for ‘the’) surrounding (put about) NAME (term)
15 Impression made by English females at European Court (6)
EFFECT – E{nglish} FF (F{emales}) and E{uropean} C{our}T
17 Missing from CD, not intended for disclosure? (3,3,6)
OFF THE RECORD – Double definition
20 The Italian head accepting learner’s complaint (7)
ILLNESS – I{talian} and NESS (head) accepting LL (learners)
21 National flag Hibernians originally used? (6)
IRISH – IRIS (flag) and H{ibernian} (originally). Iris equals flag is common fare in Crosswordland, from the FLAG IRISES (several species of Iris including the Yellow Flag Iris and the larger Blue Flag Iris (Iris Pseudacorus and Iris Versicolor respectively)). Here, Hibernian does double duty, providing its initial letter and providing a further clue to the answer
22 Seize hold of Greek sailor (4)
GRAB – GR{eek} and AB (A{ble} B{odied} sailor)
23 His pony’s prepared for putting under (8)
HYPNOSIS – Anagram (prepared) of [HIS PONY’S]
Down
1 Mug making fruit dessert (4)
FOOL – Double definition, the second being a puree of fruit scalded or stewed, mixed with cream or custard and sugar. Luvverly, and one of your five-a-day!
2 Italian male feeding horse (5)
ROMAN – The horse is a ROAN which contains (has been fed with) M{ale}
3 Ill in Chelsea, he developed a fatal weakness (8,4)
ACHILLES HEEL – ILL (ill) inside an anagram (developed) of [CHELSEA, HE].
4 Place and time for a stripper of vegetation (6)
LOCUST – LOCUS (place) and T{ime}. LOCUSTs are highly destructive to vegetation, especially when swarming or in a ‘plague’
6 Lacking inspiration, set out to annoy (6)
STERILE – Anagram (out) of [SET] followed by RILE (to annoy). I wondered about the definition, but my Chambers has, as its 8th definition of STERILE, lacking in creativity or inspiration
7 Flood one sister encountered on tryst (8)
INUNDATE – I (one) NUN (sister) followed by (encountered on) DATE (tryst)
8 Day one’s dissenting group finds pleasure in fulfilment (12)
SATISFACTION – SAT{urday} (day) I’S (one’s) and FACTION (dissenting group)
12 Growing attractive (8)
BECOMING – Double definition, as two-word clues invariably are
14 Chap repeatedly treading on a leguminous plant (7)
ALFALFA – ALF (chap) twice (repeatedly) treading on A (a) to give another name for Lucerne, the leguminous fodder plant
16 Reliable, but ultimately out of practice (6)
TRUSTY – {bu}T (ultimately) and RUSTY(out of practice)
18 One moves quickly outside decayed buildings (5)
RUINS – I (one) with RUNS (moves quickly) around (outside) it
19 The present, or part of ancient history (4)
THIS – Hidden in (part of) {ancient}T HIS{tory}
Edited at 2018-05-31 05:07 am (UTC)
Also found hard: ruins, enamel, and the unknown and weirdly named alfalfa.
Put blooming at first for 12d which didn’t help with enamel.
Wasn’t quite sure what was going on for chateau, I had cat + eau = French house and shrugged off the extra h.
Thanks Orpheus and Rotter.
COD ruins or Achilles heel.
Thanks for the blog
As what you might call a ‘more advanced’ solver, I find it very difficult to judge the right level of difficulty for QCs. This took me around 10 minutes, however, so I didn’t exactly trudge through. I’m off to the daily now!
MM
Only 9 minutes until those last two but a lot more than that to finally unravel things. David
When you turn to look in a mirror, you rotate around the vertical axis. What was to the left, in front of you, becomes the right behind you, regardless of the mirror.
If instead the mirror was on the floor, and you rotated around the lateral axis (ie bent forward), what was top becomes bottom and vice versa.
So it’s all a question of perspective. Or orientation. Or rotation. Or something.
If you haven’t been, visit the Camera Obscura in Edinburgh, which explores many similar themes in a quite dramatic way. Or the Maison de la Magie in Blois, which is slightly less impressive but much closer to nice chateaux and vinyards.