multi: only show "too few" error for multi2 puzzles.
multi: only show "too few" error for multi2 puzzles.

rvarshney/code-dot-org,pickettd/code-dot-org,dillia23/code-dot-org,dillia23/code-dot-org,rvarshney/code-dot-org,rvarshney/code-dot-org,pickettd/code-dot-org,pickettd/code-dot-org,dillia23/code-dot-org,pickettd/code-dot-org,rvarshney/code-dot-org,ty-po/code-dot-org,ty-po/code-dot-org,rvarshney/code-dot-org,pickettd/code-dot-org,ty-po/code-dot-org,ty-po/code-dot-org,ty-po/code-dot-org,rvarshney/code-dot-org,dillia23/code-dot-org,dillia23/code-dot-org,ty-po/code-dot-org,dillia23/code-dot-org,rvarshney/code-dot-org,ty-po/code-dot-org,rvarshney/code-dot-org,dillia23/code-dot-org,ty-po/code-dot-org,pickettd/code-dot-org,pickettd/code-dot-org,pickettd/code-dot-org,dillia23/code-dot-org