Last chance to view the final rounds of the U.S. Championship and U.S. Women's title events in St. Louis. As of Thursday, both were still up for grabs, with the top men's score, 5-2 (only two players had won three games) in that 11-round event ending Tuesday. Other than live games, we found superb coverage at www.chessbase.com.

The 2,212-player National Elementary in Dallas last weekend had a few Massachusetts stars among winners. Eric Feng of Sudbury tied for 34th in the Grade K-6 group. Jason Tang of Belmont tied for second and finished 10th on tiebreak in the Grade K-5 group, and Derek Zhao of Westford tied for 12th in Grade K-1 of the nine-section event. Full crosstables are at www.uschess.org, under clubs and tournaments by state, and there are photos from news reports.

What's new? World Rapid/Blitz ratings by www.fide.com, the World Chess Federation. America's Hikaru Nakamura is on top by one rating point, and other Americans are in the top 100.

The 83rd Massachusetts Open and side events will be May 24-26 in Marlboro. Details of the three-day Open (4 sections) and daily scholastic side events are at www.masschess.org.

Somerville Boylston Chess Foundation's Spring Open drew 31, with Chris Chase rolling in at 4-0, and Carissa Yip, 10, of Chelmsford in a massive tie for second at 2.5, as well as reaching 2157, just 43 points from master status.

Calvin Hori topped the May Vortex Club event in Framingham. Billerica's Club Championship was shared by John Vaughan and Tim Bromley at 5-1, during Friday rated games.

May Chess Life has the 2013-14 Yearbook highlights winners of national events, merit awards and tons of games and puzzles.

Lou Mercuri's 13th Summer All Star (age 8 to 16) Chess Training School at Brigham Community House in Newton, has two sessions, June 23-27 and Aug. 4-8. Dr. Danny Kopec's Chess Camp (age 7 to adult) will be July 6-11 at the New Hampton, N.H., school (www.kopecchess.com).

Answer to quiz: White overloads black's queen with 1. Qd3 and black has no heroic replies. See many more at www.tacticstime.com, where most positions are from real amateur games.