All players know that in the opening the f7-square is the weakest
point in black’s camp and catastrophes on that square can happen. Catastrophes on f7 aren’t limited to the opening though; they can happen in the middlegame. And, and they don;t just happen to amateurs; even masters can fall victim as Tan did in this game when the Brazilian Grandmaster pulled off a stunning coup starting with a Bishop sacrifice on f7 and then following it up with a Rook sacrifice on c7. The game was played in the Interzonal at Petropolis, Brazil in 1972.
Henrique Mecking (b. 1952) was born in Santa Cruz do Sul, a city of about 130,000 in southern Brazil.
He learned chess at the age of 6 at by age 11 he won his state championship at the age of 11. The in 1965, at the age of 13, he was the Brazilian champion. A long series of successes followed until 1979, when he was attempting his third consecutive Interzonal victory...he was forced to withdraw having been stricken with myasthenia gravis.
Myasthenia gravis is a chronic autoimmune disorder that causes muscle weakness, particularly affecting the muscles responsible for eye movement, facial expression and swallowing. Over the long term, the symptoms usually progress, reaching maximum or near-maximum severity within one to three years. Most people, when properly treated, find they can remain physically active.
It tool years, but he was eventually able to return to chess, but, naturally, not at the top levels. Mecking authored a bool telling his story and how Jesus Christ saved his life.
His opponent was Tan Lian Ann (b. 1947) from Singapore who was awarded the IM title in 1963.bHe was six times champion of Singapore.
Henrique Mecking–Lian-Ann Tan1–0A29Petropolis Interzonal1973Stickfisg 17.1
A29: English Opening: Four Knights Variation 1.c4 e5 2.c3 f6 3.f3 c6 3...e4 is, of course, premature... 4.g5 e7 5.c2 and the e-Pawn is
lost, 4.g3 b4 5.g2 0-0 6.0-0 e4 Black usually plays 6...h6 or 6...Re7.
The advance of the e-Pawn doesn't accomplish much. 7.g5 xc3 8.bxc3 e8 9.d3 exd3 10.exd3 d6 11.b1 Hindering the develoipment of black's B. h6 12.e4 The N goes here and not f3 because it invites the exchange of Ns. xe4 13.xe4 Black is in no danger yet, but note that he has no pieces defending
his K. e5 Black has tried 13...Qf6 a few time, but the text is perfectly
satisfactory. 14.f4 Sharp play! The safe 14.Bd4 is not for Mecking. Black
should play 14...Bg4 with a good game. xc4 15.f5 d5 16.g2 e3 17.xe3! xe3 18.f6 Technically this position is equal, but white obviously has the
initiative which is a dangerous thing in Mecking's hands. g6 19.d2 e6 20.xh6 xf6 21.xf6 xf6 22.xd5 Black is facing some difficulty here oner
how to defend against an attack on f7. Tan mkaes the bold, and correct
decision) to offer up his b-Pawn and shield f7 and at the same timeget his R
on a8 into play. f5 23.xb7 Mecjing has reached a tricky position! How
does black defend? d8 23...xd3 Threarening mate on f1 24.f4 e7 25.xc7 e1+ 26.g2 f1+ 27.xf1 d2+ 28.g1 xd5 and it;s doubtful white can
win even with the extra P 23...e5 is the correct defense because after 24.xf7+ 24.c4 e1+ 25.g2 e8 26.b2 e2+ 27.xe2 xe2+ 28.g1
Black draws e1+ 28...xd3 leads to a lost B+P ending 29.xg6+ xg6 30.xe2 29.g2 e2+ 24...xf7 25.xc7+ e6 26.h7 Black can draw with 26...
Qe1+ or he can try e3+ 27.g2 e2+ 28.g1 but he still has to take the
draw. 24.c4 xc3 This loses outright. After 24...Bxd3 the
chances would be equal. 24...xd3 keeps the upper hand. 25.xd3 f3 26.xc7 xd3 25.xf7+ An excellent example of a B sacrifice the
point of which appears next move. xf7 26.xc7+ This second
sacrifice is a decoy. xc7 27.h7+ e6 28.xc7 xd3 29.xa7 d1+ 30.f2 d2+ 31.f3 d3+ 32.f4 f6 33.a6+ Black resigned. 1–0
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