No 13557, Monday 16 May 2022, Lightning

Art work by Prasanna

Solution to 21D 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   Sticking together with prisoner going around this place on time (8) COHERENT {CO{HERE}N}{T}

5   Short place for storing valuables at eastern Java perhaps (6) COFFEE {COFFEr}{E}

9   Prime concern of religious house without appeal (8) PRIORITY {PRIOR{IT}Y}

10 About to break group’s confidential information (6) SECRET {SEC{RE}T}

12 Learner moving to the end to rent art stand (5) EASEL (-l)EASE(+l)L

13 Essential substance in a radio broadcast? (9) RADIATION {subsTance} in {IN+A+RADIO}* &lit

14 Primarily feature of species seen imprinted later (6) FOSSIL Acrostic &lit

16 Six trapped in lawsuit that is meaningless (7) TRIVIAL {TRI{VI}AL}

19 Tone down a painting material (7) TEMPERA {TEMPER}{A}

21 Black coal left aside to set ablaze (6) IGNITE lIGNITE

23 Head of technology replacing carbon to give confidence to company (9) ENTOURAGE EN(-c+t)TOURAGE

25 Poetry very brief — lacking introduction (5) VERSE {V}{tERSE}

26 Ranger managed to shelter Einstein say (6) GERMAN [T]

27 Choice to go around last university — it may be simple (8) PENDULUM {P{END}{U}LUM}

28 A week in hospital emergency room for salesman (6) HAWKER {H}{A}{WK}{ER}

29 Lacking knowledge of rating on liquid (8) IGNORANT*

DOWN

1   Code of conduct is presently having errors — rectify for starters (6) CIPHER Acrostic

2   Physical injury restrains one lost at sea in heavy downpour (9) HAILSTORM {HA{1}{LOST*}RM}

3   River essentially pure, and a lake characteristic of country (5) RURAL {R}{pURe}{A}{L}

4   Ancient city in South African province is not artificial (7) NATURAL {NAT{UR}AL}

6   Speech about physical education for an activity (9) OPERATION {O{PE}RATION}

7   Scientist reshaped engineering firm (5) FERMI [E+FIRM}*

8   Net cast with inclination to snare (8) ENTANGLE {NET*}{ANGLE}

11 Correct course, turn back (4) EDIT<=

15 Please cut out risk (9) SPECULATE*

17 Break spent very intensely active at first among other things (5,4) INTER ALIA {INTERvAL}{In...y}{Ac...e}

18 Basically good talent, hard to be shaped fully (2,6) AT LENGTH {Good+TALENT+H}*

20 A container is partially open (4) AJAR {A}{JAR}

21 Half of instrument to remain and regularly drag floater (7) I?E?E?G (Addendum - ICEBERG {devICE}{BE}{dRaG} - See comments)

22 License for every American university (6) PERMIT {PER}{MIT}

24 Fling bed cover (5) THROW [DD]

25 Instruction to see old film that is recorded (5) VIDEO {VIDE}{O}

Reference List

Time = T, Eastern = E, Appeal = IT, About = RE, Learner = L, Left = L, Very = V, University = U, Hospital = H, Emergency Room = ER, River = R, Lake = L, Physical Education = PE, Engineering = E, Good = G, Hard = H, Old = O