The official NYT Pips service for May 15, 2026 lists three daily boards: Easy #860, Medium #882, and Hard #903. The service feed includes the board constraints, dominoes, and solution placements for each difficulty.
Source check: the official NYT Pips v1 service confirmed the May 15, 2026 boards. URLs checked: https://www.nytimes.com/svc/pips/v1/2026-05-15.json ; https://www.nytimes.com/svc/pips/v1/2026-05-14.json ; https://www.nytimes.com/svc/pips/v2/2026-05-15.json returned 404 ; https://www.nytimes.com/games/pips ; live intent search for NYT Pips May 15.