## Convert by Mr Lemon

### Puzzle explanation

In clue order, the words misprinted were as shown below, the wrong letters spelling GRINGOTTS, the wizards’ bank in J. K. Rowling’s Harry Potter series. Extra letters in the wordplay to the other clues gave “Diagon Alley; Philosophers; H Potter” pointing solvers to the chapter “Diagon Alley” in Harry Potter and the Philosopher’s Stone, which describes Gringotts and reveals that 1 Galleon (1A) = 17 Sickles (17A) and 1 Sickle = 29 Knuts (29A). To convert one galleon to knuts therefore requires a factor of 493 which was to be highlighted (as CDXCIII) in the grid, together with the intermediate unit Sickle, located at the appropriate 17. Consistent with these values, clues with misprinted answers had prime numbers.

### Clue explanations

Conventions: * = anagram, < = reversal

ACROSS
1 D GALLEON GAL + LED + ON
6 I PASSED ASS in PIED
12 A ANTEING A + (TINE* in NAG)
13 grill/drill G TRAINED AT DINER*
14 G CARL CAR before LG; ref Carl Jung
15 O CEDRELA LEO* in CEDAR*
17 N SICKLE SNICK + (ow)LE(ts)
18 A AEROSHELL A(ck-ack) + HEROES* + ALL
22 L ALEC ALE + CL
23 Indra/India R ISIS I + ’S + (hib)IS(cus)
25 L TEAMSTERS TELA + MASTERS – A
27 E STRIKE TIKE in SE, all around R(emorse)
30 Y DESALTS DEY + SALTS
31 bin/bun I HAIR Hidden
32 P DAIRIES DAI + PRIES; reference Dunlop cheese
33 H JUNIPER UNRIPE* in J(edda)H
34 I ANGSTS A + N + G + SITS
35 L SCREENS CLEANERS* – A
Down
1 O GOTCHA (Graham) GOOCH about T(ests) + A
3 Grail/Drail G LAIRD DRAIL*
4 S ENNEADS NEA(R) in ENDS + S; reference Brian Close
5 Tod/Ted O NED END*
6 O PISSOIR POIS + SOIR
7 TT/NT T ANTI A + NT + I
8 P SNAKES ALIVE EVAN SPEAKS* about LI
9 H EARL HEAR + L
10 E DELE EEL in (D + E)
11 Tart/Part T TREBLE BELTER*
16 R ARCED C(ut) in RARE + D
19 nest/next S EXTERNS NEXT* + S about ER
20 S SISSIER SIRS about S(ix) S(ensual) I(ndian) E(unuchs)
21 H LISTED LIST + HE’D
24 P SOSSES S + POSSES
26 O BARRE BAR + ORE
27 T SHEA HATES*
28 T TARN TAR in TN
29 E KNUT KE(e)N + UT
32 R DIS IS after DR