[Event "Rio de Janeiro"]
[Site "Rio de Janeiro BRA"]
[Date "1900.02.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Joao Caldas Vianna"]
[Black "Augusto Silvestre Paes de Barros"]
[ECO "C52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "65"]

1.e4 {Notes by Roberto Grau} e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4
5.c3 Ba5 6.d4 exd4 7.O-O d6 8.Qb3 Qf6 9.e5 dxe5 10.Re1 Bd7
11.Bg5 Qf5 12.Nxe5 Nxe5 13.f4 f6 14.Qxb7 Rd8 15.fxe5 fxg5
16.Rf1 Qxe5 17.Nd2 Ne7 18.Rae1 Qc5 19.Bf7+ Kf8 20.Bg6+ Bf5
21.Bxf5 Nxf5 22.Ne4 Qb6 23.Rxf5+ Kg8 {Right now, Caldas Vianna
finds a notable move, of problem, which creates many
difficulties for Silvestre; study the position, before
continuing with the reading, to see if you find the idea of
the master; white pieces must take advantage of the defective
position of the black King; the first check can be fatal for
the black pieces; and this allows Caldas Vianna do the
following beautiful move} 24.Nd6 {Protects the Q, who cannot
be captured, because after 24...Qxb7 25.Nxb7, the white gains
a piece; black cannot do 24...Rxd6 because 25.Re8# ; black
cannot take the P because 25.Qd5 or 25.Qf7#; black Q cannot
take the white N: 25.Qb3+ Qd4 26.Qxd4 Rxd4 27.Re8# ; thus,
there is a perfect spiral of mates born of the unpleasant
situation of the black King. But, in fact, white pieces want
to give a check with the Q in d5, and, therefore, pose a
barrier to the Knight.} 24...dxc3+ 25.Kh1 h6 26.Qd5+ Kh7
27.Qe4 {Threatening an exposed check} 27...Kg8 28.Qe6+ Kh7
29.Rf6 {Threatening 30.Rxh6+ and 31.Qf7#} 29...Rhf8 30.Qf5+
Kg8 31.Rxf8+ Rxf8 32.Qxf8+ Kxf8 33.Re8# 1-0