No 13352, Wednesday 15 Sep 2021, Dr. X

Solution to 3D has been deliberately left unsolved and is to be answered only by a non-regular / novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.

ACROSS

1   Hard young rogue accepting reckless dare is unsophisticated (5-3-5) ROUGH-AND-READY {HARD+YOUNG}* over {DARE}*

8   Mobs, excited about a Russian martial art (5) SAMBO {S{A}MBO*}

9   Desperate chap cuddling sweetheart on vacation with desire (4-5) LAST-DITCH {LA{Sw...rT}D}{ITCH}

11 Old tramp outside hotel lounge, close to insensate (10) THREADBARE {T{H}READ}{BAR}{i...tE}

12 On the contrary, castigate false witness (4) LIAR <=

14 Group avoiding carbs essentially to stay slim - it's the latest fad (2-5) IN-THING {rIN{THIN}G}

16 Revise problem involving new mathematical function (7) INVERSE {I{N}VERSE*} 

17 Farmhouses with good fields (7) GRANGES  {G}{RANGES}

19 Petrol about to explode in service stations (7) GARAGES {GA{RAGE}S}

21 Master released wall painting showing mountain range (4) URAL mURAL

22 Complain about terrible heat in stately residence (5, 5) GREAT HOUSE {GR{HEAT*}OUSE}

25 Something fishy - breaking and entering, he carries one away (9) KIDNAPPER {KI{AND*}PPER}

26 Senorita in town concealing dishonour (5) TAINT [T]

27 Where pitcher might be fairly accurate (2, 3, 8) IN THE BALL PARK [DD]

DOWN

2   Dynamic mentor accepts novices essentially according to excellence (2, 5) ON MERIT {MENTOR}* over {novIces}

3   What silly person being a drunk might do? (2, 2, 1, 5) G? O? A ?I?G? (Addendum - GO ON A BINGE {GOON}{BEING+A}* Semi& lit- See comments)

4   A revolting attempt to arrest liberal impulsively (2-3) AD-LIB {A}{BI{L}D<=}

5   Ratting on fashion designer ensnaring model (9) DESERTING {DESER{T}ING*} 

6   Refurbished dynamo conducting current (4) EDDY [T]

7   Organiser welcoming teetotaller with drink at Centre is weirder (7) DOTTIER {DO{TT}{drInk}ER}

8   Cheat possesses sex appeal - avoid becoming an easy target (7, 4) SITTING DUCK {S{IT}TING}{DUCK}

10 Damaged stern breaks open causing hazardous situation (7, 4) HORNETS NEST {HO{STERN*}NEST}

13 Open rave featuring electronic rhythms essentially is outrageous (4-3-3) OVER-THE-TOP {OVERT}{H{E}{rhyThms}OP}

15 Brats go wild, excited about entering bar serving good food (9) GASTROPUB {BRATS+GO}* over {UP<=}

18 Scrap with a Mafia boss outside bar (7) ABANDON {A}{DON} over {BAN}

20 Grand gold sink close to counter, more showy (7) GAUDIER {G}{AU}{DIE}{c...eR}

23 Amateur on edge about mastering recipe in a month (5) APRIL {A}{LI{R}P<=}

24 Distressed about husband's fling (4) DASH {SAD<=}{H}

Reference List

Hotel = H, New = N, Good = G, Master = M, Liberal = L, Model = T, Teetotaller = TT, Sex appeal = IT, Electronic = E, Grand = G, Amateur = A, Recipe = R, Husband = H