No 12731, Monday 16 Sep 2019, Arden

ACROSS
1   Fixed in pole, shifted to ancient city (14) CONSTANTINOPLE {CONSTANT}{IN}{POLE*} Remids me of the riddle we used to pose in school. "Constantinople is  very big word, if you can't spell it you are a very big fool"
10 Queen almost returned to the country (5) NIGER REGINa<=

11 Claims missile lost direction, but he is loaded (9) ARROGATES {ARROw}{GATES}
12 Root of English drinks originally (7) GINSENG {ENG} after {GINS}

13 Rent by day, admit it's a disappointment (7) LETDOWN {LET}{D}{OWN}
14 A dolt's back, all alone (5) ALOOF {A}{FOOL<=}
16 Return transport, remain making sandwich (9) SUBMARINE {BUS<=}{REMAIN*}

19 Transported door with key (9) ENTRANCED {ENTRANCE}{D}
20 Walk is allowed (5) LEGIT {LEG IT}
22 Come back with final words and broken toes (7) RIPOSTE {RIP}{TOES*}
25 Cutter's home is in semi-circle (7) INCISOR {IN}{CI{SO}Rcle} Is/So ? Seems to be an error in the clue (Addendum - {IN}{C{IS}ORdon} - See comments)
27 Random search goes through, but it's capital (9) BUCHAREST {BU{SEARCH*}T}
28 Correct, head out to slander (5) ALIGN mALIGN
29 Dame Fonteyn free to take to a period of penance (3,2,9) DAY OF ATONEMENT {DAME+FONTEYN}* over {TO} and {A}

DOWN
2   Red fort, taking along a Church gallery (5,4) ORGAN LOFT {FORT+ALONG}*
3   Let girl come in, OK? It will be swell! (5) SURGE {SUR{G}E}
4   A correct signal to take drug, first course will relieve pain (9) ANALGESIC {A}{NALG{E}SI*}{Co...e}
5   It's part of Alpine county, rolling hills (5) TYROL [T] Semi&lit
6   Strange thing, will come down at dusk (9) NIGHTFALL {THING}* [RA] (Addendum - {THING}*{FALL} - See comments)
7   Terrace becomes quiet at ten (5) PATIO {P}{AT}{10}
8   Soul of a city is church (7) ESSENCE {ESSEN}{CE}
9   Imagine one away breaking wartime code (6) ENIGMA iMAGINE* Semi&lit
15 Standard workers for hoisting the tricolour (9) FLAGSTAFF {FLAG}{STAFF}
17 Not good to make money on sport (9) BADMINTON {BAD}{MINT}{ON}
18 Middle finger is not used for eating (9) INGESTION {fINGEr}{{IS+NOT}*
19 Decked out, stole finally (7) ENROBED Anno pending (Addendum - {EN{ROBE}D} - See comments)
21 Train, train one to get capital (6) TIRANA {TRAIN*}{A}
23 Soft, distasteful and fussy (5) PICKY {P}{ICKY}
24 Put up before court (5) ERECT {ERE}{CT}
26 Atlantic has massive ridge in the middle (5) CHASM [T] &lit

Reference List
Day = D, Key = D, Girl = G, Drug = E, Quiet = Soft = P, Church = CE, One = A, Court = CT

GRID

Special, Sunday 15 Sep 2019, K Koteswar Rao

Each person may enter a maximum of three answers till 6 PM (Annotations compulsory)
Please submit all your answers in one comment.

ACROSS
7   You will never bat it when you are motionless! (6)
8   Trying experience of alternative arrangement (6)
10 This mammal’s hideout is in the Eastern gallery (8)
11 What is cooking with the pressman who became friendlier? (6)
12 Bird has no role on the hill (5)
14 Plugs contain small error committed by buffs (7)
15 Thenceforth Adam was conceived as illegal dealer of weapons (8,2,5)
18 Greatly pressed urn (4-3)
19 Information about mutilated tile removed (5)
20 Senseless seaman spurred occasionally (6)
21 Left work in time of party at a place of abundance (2,6)
23 Undernourished gets filled (6)
24 Setter is on a party at secluded Whitefield (6)

DOWN
1   Without toxic element, fared badly, in general (4-4)
2   Beloved reverend is dismissed by knight as head of the cathedral (4)
3   Asteroid, not so deadly, fell on broadside (6)
4   Cancel a debt immediately, I say (5-3)
5   Fed up with expert who reportedly proposed act of damaging the appearance (10)
6   Foreigners in America have right to retain senate (6)
9   The member’s high alert about death? It cannot be declined in liquidation (5,6)
13 Appropriately mix dye with flying colours (10)
16 Book is free in Times Digests (8)
17 Do this with guitar when playing in rainy city, as per spooner (4,4)
18 Extremely happy honeymooner is somewhat of mixed character (6)
19 Bumper car to move suddenly by metre (6)
22 Pedaled and paddled reportedly (4)

Across Lite version can be accessed at KKR 29

Enjoy