■■Shelby Lyman*On chessBEGINNER S CORNER — Hint and explanation: Black has a surprising queensacrifice!BEGINNER’S CORNERao no 80 o x ex nx axBLACK MATESLast week I reported on the surprise victory by the Burlington, VT high school chess team in the hational high school championships.A key to the team's successful performance was the enthusiastic endorsement of a school chess program by junior high school principal Don Brown in 1972. Noting the interest in chess in his school, Brown suggested (to Bill McGrath): “Why not set up a chess program?”As Bill tells it: “We found that chess improved the academic work, especially thereading of our players. Chess has been aterrific motivation for kids to get into books. That is the biggest advantage of chess Books become immediately useful.Chess also improves general study habits.Kids learn to correct sloppy preparation. A chess game gives some feedback on how well one is studying. A fatal flaw will become apparent during play. You get murdered if youdon’t prepare well.”*+++In SOLVE !T is a game by Walter Brownefrom the recent international tournament in Orense, Spain. lt;That tournament, curiously is sponsored each year by the local gynecologist!) The American Champion, whofinished only a half point behind first-place winner Orestes Rodriquez of Peru, played 27 . . . B-N3 in the diagrammed position Nowif white moves his own threatened knightSOLVE-ITAFTER 27. Q-K2. BROWNEBO NO 90 O X 8X NX BXSANZ• LACK'S KNIGHT IS ATTACKED. WHAT'S HIS SEST MOVE?at Q5, Browne will simply play 28 ... NxBP with a large advantage Sanz chose a sequence instead beginning with 28 Q-N4 which lost the exchange immediately and the game shortly thereafter.SanzBrow nrISK R2Q Kl1. ?PQB4P K419QR KlR-.Nl2NQB3N-QB320P K4NPxP3P-KN3P K.N321NPxPN-R54B-N2B N222B-RlN-R45P Q3PQ3• 23.N Q5R-B26K-QN1P B424PxBPBxP7.P K3N-B325BQB3QQ2*P QN4P VJR326N-KN1PB39KN K20-027Q-K2B N316.0-0KRl2SVI-N4QxQ11P-QR4P KN429PxQBxQPI12P N5PxPWPxNBxR13PxPN-K231.N-K3BQ614P B4P R332R QlP K5If*B 02N-.N333BxBchKxB16.q B2R Kl34RRlN-B417.P R3R K2ResignsSolution to BEGINNER’S CORNER: 1 . . . Q-R8ch!!2 KxQ B Btk h; 3 K-Nl R Q8ch; 4 R Kl RxR mate.Copyright 1977 b Shelby Lyman