Each of the letters represent a different digit from 0 to 9 in the following alphanumeric subtraction problem:

SPACE

__- CENT__

3651

What is the word representing 3651? How about 15631?

__Note__: Neither S nor C can be 0.

AT has the correct solution. The computerized solution shows that this is the only solution.

DM refers to a second problem, but I am not sure what that is. I interpret the request "How about 15631?" as asking for the literals values (STEPS) corresponding to the literals derived from the original subtraction solution.

If there is a second problem: SPACE - CENT = 15631, there are 13 preliminary solutions:

18326 - 2695

18427 - 2796

19236 - 3605

19438 - 3807

20347 - 4716

20549 - 4918

23579 - 7948

23680 - 8049

23781 - 8150

24387 - 8756

24791 - 9160

25094 - 9463

25498 - 9867

All except the first and the third lack one or two of the digits in 15631. The first gives STEAS and the third gives STECS, which DM suggests are probably not "words" in the usual sense although they are strings of letters. KS will have to give his verdict on his intention for the final part of his puzzle.