Crossword clues for Puzzling problem 4 lettersAnswerClueCRUXPuzzling problemPOSERPuzzling problemENIGMAPuzzling problemPOSERSPuzzling problemsTEASERPuzzling problem.TEASERSPuzzling problems.HARDNUTTOQUACKPuzzling problem, to a duck?TUNNELWith 86-Across, fixation problem suggested by this puzzle's themeTOOTHDECAYDental problem (illustrated by this puzzle's long Across answers)SPLITENDHair problem, and what three short puzzle answers each hasSPLITENDSHairy problem? ... or a hint to this puzzle's themeFOCUSProblem-solving advice appropriate for this puzzle?CONTRACTDISPUTELabor-management problem, or an alternate title for this puzzleONCEISNOTENOUGHJacqueline Susann novel, and the problem with some of the answers in this puzzleEDGECASESProblems that occur exclusively in extreme situations, and a hint to this puzzle's bordersWRITERSBLOCKProblem for a wordsmith, and a clue to five figures hidden in this puzzle