, t * * •' * •••• .'. • *.«-V r ■•;* » y* * ♦ .IF* • *POru+ *• « * f ‘S? • •ItI5SS5®5»»S5®K®M*Ja• • •material, attack andMRv.’.v.»Vi,v.v,Sacrificing maintaining an pressing home the win require a strong hand. One misstep and the aggressor’s impetus may vanish. Then all that remains for his brave effort is a deficit in material.Often the main obstacle to a successful conclusion is an excess of opportunities. Distracted by tempting tries, the attacker will miss his only winning chance.It may be of some surprise tothe relative newcomer to chess that the main effort in carrying out a sacrificial attack is not finding a succession of hard blows that obliterate the opposition. Rather, the attacker tries to play a series of moves, including hard blows that maintain the strategic edge temporarily gained for the material sacrifice.R-B7, B-N2; 3. B-N6, K-K2 anddiagram two was reached. Findwhite’s winning continuation.90 NO 90 oX 9* NX a*QR QN jQB Q K KB KN KRVelimirovic played 4. BxN and after . . . RxB; 5. RxR, KxR; 6. Q-N7 check, K-Kl; and8. R-Bl, the final postion was reached. The threat of mate has no effective answer. Lazic resigned.ao no ao o x gx nx bxQR QN QB Q K KB KN KRIn our first position, black has a three-pawn advantage but he is facing withering firepower in the center. The pawn barricade in front of the king isvulnerable thanmore vulnerable man may appear, as the pawns do not defend each other. Yet if blackhad an extra move or two hemight handily hold the postion.Velimirovic (white) ca ith a fine Dlav and thecrumbledwaa 1. Q-B3! This queen movesimultaneously protects the bishop, threatens the winning B-Q5, prevents N-K4 and prepares a queenside invasion. Hard-pressed, I^azic broke the king-file pin and avoided B-Q5 with 1... K-B2. (An immediatequeen retreat, i.e., 1. . . Q-B2, allows white to penetrate the central white squares after 2. B-Q5, P-K4; 3. Q-B5, etc.)After 1. . . K-B2, Velimirovic deftly switched his attack to thefile and thebishopqueenqueenside and the game came to an abrupt end. Play continued with 2. R-QB1, Q-N5; 3.Thefeint in the center, preparing the queenside incursion, was a satisfying logical denouement to the original position.LETUlt;YOU/THE Hlt;THIS VvSAVEoverlib