Shelby Lyman on Chess ___mr arRobertlooks like a serious U.S. challengerflow thechessmenmovePAWN moves only forwardone space, with the exception of itsfirst move when it has the option ofspaces forwardforwardiiTHE KNIGHT moves and capturesformtwospaces in either a horizontal or vertical direction and one space to theoverTHE QUEEN, the most powerfulpiece on the board, mlt; tures diagonally, andhorizontallyfiles.erticallyTHE ROOK (occasionally calledandzontally and vertically, along theranks and files.THE BISHOP moves and capturesdiagonally.THE KING moves and captures one square at a time in any direction.Today is Friday, July 20, the 201st dayof 1973 with 164 to follow’.ter.The morning stars are Mars, Jupiterand Saturn.Venus.Those born on this date are under thesign of Cancer.Sir Edmund Hillary, New Zealand explorer who was the first man to conquerrNo one has doubted that Bobby Fischer’s ascendancy to the world championship would initiate some kind of renaissance in American chess. But few(Diagram 1)BLACK.Taimaiiot*6 Nfi 8 6 X 8X NX XX(Diagram 2)BLACKB\riicX N 8 6 X 8X NX XXexpected that the lone American participant, 45-year-old Robert Byrne, wouldqualify for next year’s challenge matches by taking one of the top three placesin the 18-n.^n Leningrad Interzonal.Pressing the leaders, Karpov and Korchnoi, all the way, Byrne played the bestchess of his career.He will join Karpov, Korchnoi, Petrosian, Spassky and three others selectedin a second interzonal tournament (heldnext month in Brazil) in a series ofmatches to determine the challenger to Fischer.QR QN QB Q K KB KN KRllunfWHITKQR QN QB Q K KB KN KRkorrimniWHITLIn keeping with the elan of his play atLeningrad, Byrne said after the tourna-Whot it Byrne’s winning move?What is Korchnoi's winning sacrifice?pe*»- j ment that he would like to play Spassky, pawn and regain the sacrificed piece in a possibilities as you can in the positionsBoris, who recently announced himself complicated variation. Play continued to that occurred after 21. NxP check. Nextthat he wished to play a rematch with move 28, when Byrne resigned. He was week we’ll present several of those vari-Fischer in 1975, may be wondering, at two pawns behind and faced unstoppable ations in detail as well as the completethis point, w’hether 63-year-old Sammy threatsReshevsky, who will be representing theagainst his king, moves were as follows: 22The game score of the game.• • •B-Q2; 23.United States in Brazil, will also qualify Q-R6, Q-K2; 24. B-B5, Q-N2; 25. QxB4LYMANISMand add another American obstacle to check, K-Rl; 26. N-B7 check, K-Nl; 27.Peculiar placement of piecesthe ex-champion’s hoped-for match with NxP check, K-Rl; 28. BxB, Resigns.surprise combinationsFischer.Work out as many of the alternativeCopyright 1973 by Shelby LymanFrom among Byrne’s many fine effortsin the Interzonal, I have selected crucialpositions from two games: one in whichhe beat the Russian Mark Taimanov, andanother in which he lost to Taimanov’scountryman, Victor Korchnoi. The lattergame was the only loss by Byrne in Leningrad. It demonstrates the superb playneeded by Korchnoi to beat him.Diagram 1following position occurredTaimanov (black) grabbed Byrnepawn with his rook and then retreatedhis knightByrne chased it with P-QB3. Byrnesurprisemovedwould have lost the QRP and rook (atNl) for the white knight. Taimanovplayed insteadPxN and was thenforced• •The moon is approaching its last quar- 27.QxR after Byrne’swhich threatenedQxP check) as well as the queenadvantage of queenByrne was able to winThe evening stars are Mercury and gatneDiagram 2next position, Korchnoisurprising breakthroughAfter NxN(21) bv Bvrne22. N-N5 iswin anotherH ftIf as 8.8(1 to 9.90Checks or solids in assorted fabricsanrl r*nlnrc 7_Q_ 1 1 _ 1 Q Vnf oil