Clearance
There is a very desirable square you would like to move a piece to, but your own piece is blocking your way. Therefore, you must find a way to 'clear' the blocking piece out of the way.
Fieberg -- Zaid
1973 1-0
1.Bxe5+!! -
to open path for dP so that it can be cleared from d5 to take
advantage of black's difficulty on a8
1...dxe5 2.d6 Bxd6 3.Bd5 Bb5
- ( 3...Rxa7 4.Qxa7 Qxa7 5.Rxa7+ )
4.Qxb5 Rxa7 5.Rxa7 Qxa7 6.Qe8 -
now the black K is a liability
6...c4+ 7.Kh2 Qc7 8.Qg8+ Kf6 9.Qe6+ Kg7 10.Qg6+ Kf8 11.Qxh6+ Ke8
12.Qg6+ Kd7 13.Qe6+ Kd8 14.Qg8+ Kd7 15.h6 c3 16.h7 Qd8
- ( 16...c2 17.Qe6+ Kd8 18.h8=Q+ Bf8 19.Qxf8# )
17.Qxd8+ Kxd8 18.h8=Q+ 1-0
Schweber -- Quinteros
1969 1-0
1.Nd5!! -
with the N off c3, white takes devastating control of the diagonal
1...exd5
- ( 1...Bxd5 2.Rh3 Qg7 3.Bc3 )
2.Rh3 Qg7 3.Bc3 d4 4.Bxd4 1-0
Mikenas -- Polugaevsky
1966 0-1
1...Rxd3!! -
tries to clear way for c4 after which Qc5+ is very dangerous
2.Bxd3
- ( 2.e5 Nd5 3.Qc1 Nxc3
( 3...Rxc3 4.Qd2 Qc7 5.Rxc3 Nxc3 6.Qxc3 Bxa4 )
4.Bxd3 Nxb1 5.Bxb1
( 5.Qxb1 c4 6.Bxh7+ Kh8 7.Ra2 g6 )
5...c4 )
2...c4 3.Qd6 Ne8 4.Qb4 Qxb4 5.cxb4 cxd3 0-1
Dimitriescu -- Nagy
1936 0-1
1...d3!! -
makes Nd4 possible
2.exd3
- ( 2.Qxd3 Qxd3 3.exd3 Nxd2 4.Rfd1 Nd4
( 4...Nf3+ 5.Kh1 Rad8 6.Nf4 Nce5 )
5.Rxd2 Nf3+ )
2...Nd4 3.Qd1 Nxd2 4.Qxd2 Nf3+ 0-1
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