Crossword 2069: Yes and no

The 36 gives 34 that, if combined, 42 and suffixed to the word defined by each of 7, 10, 12 and 22, produce a 8. The defined word appears hidden in the completed grid and must be shaded. Elsewhere, ignore an accent.

Across

1    Parties have a nap then start Olympic event (14, four words)        
9     Sultanate scholar visits continually (4)    
11    Game played later against Irish town (10, two words)
14    Laddery structures spoiling Alsace (6)    
17    Honest sect admits eccentricity (5)    
18    Peculiar character’s spoken to listeners (5)    
20    Wearing headdress circling posh island (7)    
21    Dreamy individual in defunct police force (7)    
23    Twister caused pain and trouble (7)            
24    Obama’s expert general (very boring) (5)
25    Trader leaves French waters – yo-heave-ho? (5)
27    Erk even behaves (7)    
30    Vile human race oddly free of magic (7)        
32    Hard to find naughty elves unguilty at heart (7)
37    Some risotto others relish (5)    
38    Weapon damaged hat covering nursemaid (6)
39    Stern parent aged early (4)
40    Proteins in espresso Right Reverend stirred (10)
41    Ancient myths about snake out of river (4)    

Down

1    Moonshine in moderation over China (5)    2    Old man gets a printed receipt? (5)    
3    Fat king and queen our navy shipped (6)
4    Kept by parish priest, small fish settle completely (5, two words)        
5    Warned tail-ender not in to dress up (7)        
6    Recite medical works (7)
13    See mimic start to eat leaf blades (7)        
15    Therapeutic apparatus a Brit has developed (8, hyphened)        
16    Improved Millie gets in before Neddie (11)
19    Daisy drunk with pinot stripped for orgiastic festivals (8)    
21    Gold box almost worked as part of theatre (9)
26    The Italian female’s on the far side (7)            
28    Porky Mister C exercised (7)    
29    Plaudit ratty date denied flowers (6)        
31    Very clever copper brought to trial… (6)        
33    …flower ladies disrupting British Museum (5)
35    Athlete’s first aim is winning (5)        

A first prize of £30 for the first correct solution opened on 16 July.