These are the four remaining uncleared levels according to www.issmmbeatenyet.com

If, at any point prior to the Super Mario Maker server shutdown on April 8th, three of these levels have been beaten and one has not, this question will resolve to the remaining level.

If two or more of these levels remain at server shutdown this question will resolve N/A.

This market only concerns these four levels. If another "uncleared" level is identified* it will not affect the resolution of this market.

*This is unlikely but possible if, for example, the Team 0% community determines a previous "clear" was hacked/illegitimate.