**Across**

**A**: a multiple of V across.

**H**: a multiple of R across.

**I**: third root of D down.

**J**: a prime number.

**K**: the digit sum of G down multiplied with a prime number.

**L**: half the digit sum of L down.

**M**: this multiple of T across is greater than C down.

**N**: a multiple of T across.

**O**: greater than the reverse of T down.

**P**: a multiple of R across.

**Q**: another multiple of R across.

**R**: a divisor of P across.

**S**: a multiple of J across.

**T**: the digit sum of R across.

**U**: a multiple of T across.

**V**: K across multiplied by the prime number mentioned in the clue for K across.

**Down**

**A**: the reverse of N across.

**B**: a multiple of P across.

**C**: a palindrome.

**D**: the third power of I across.

**E**: not a multiple of the digit sum of V across.

**F**: a cubic number.

**G**: the third power of K across.

**L**: Rainer Typke's year of birth.

**N**: the difference of the first two digits equals the difference of the last two digits.

**O**: a multiple of K across.

**P**: not a multiple of T down.

**T**: the reverse is less than O across.