Zhou Zhang and Kevin Curry present a monumental riddle in their Sunday puzzle debut.

SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “John Kugelman, of Gainesville, Va., is a software engineer specializing in cybersecurity.

SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “Sam Brody, of Brooklyn, is a research scientist and software engineer specializing in natural language processing.

SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “Dylan Schiff is a middle school science teacher in Millsboro, Del. This is his fourth crossword for The Times.

SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “Garrett Chalfin is a second-year student at the University of Chicago, studying philosophy and economics.

SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “Brendan Emmett Quigley is a full-time crossword constructor in Brookline, Mass.

SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “Brandon Koppy, of Dripping Springs, Texas, is a performance director for an ad agency.

SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “Jacob Reed is a director, writer and visual artist in Pasadena, Calif.

SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “John Kugelman, of Gainesville, Va., is a software engineer and musician. This is his ninth Sunday Times crossword.

Kareem Ayas’s Sunday puzzle is major fun. By Caitlin Lovinger Jump to: Tricky Clues | Today’s Theme SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “Kareem ...

SUNDAY PUZZLE — Will Shortz, in his print introduction to this grid, writes: “Simeon Seigel, of Brooklyn, is a partner at the Turett Collaborative, an architecture and design firm in New York ...

Paul Coulter’s puzzle will have you looking up, down and all around. By Caitlin Lovinger Jump to: Tricky Clues | Today’s Theme SUNDAY PUZZLE — Will Shortz, in his print introduction to this ...