Anticipatory unpin

A piece makes a move to prevent a possible pin of an opponent's piece.

See also: Anticipatory self-unpin.

Alias: Pin prevention.

Doré, Marcel

Themes-64, 1957

Spec. Prize

Example: Anticipatory unpin
h#2  (3+4)

1.Bc1 Rxa7 2.Qa1 Rb8#

View in Helpmate Analyzer

FEN: 6k1/p7/8/6b1/3q4/8/8/RR5K

External links:

Chlubna, Friedrich

Schach-Echo, 1975

Comm.

Example: Anticipatory unpin
h#4 2.1... (2+6)

1.Qh6 f6 2.Bb8 f7 3.Rg3 f8=Q+ 4.Rg8 Qxh6#
1.Bc7 Kb7 2.Qe5 f6 3.Rh3 f7 4.Rh7 f8=Q#

View in Helpmate Analyzer

FEN: K6k/8/2n2q2/5P2/3p4/2r3b1/8/8

External links:

Csák, János

Mat-Pat, 1988

4th Prize

Example: Anticipatory unpin
h#2 2.1... (6+9)

1.Se5+ Kg3 2.Qf5 Sd5#
1.Sf6+ Kf3 2.Qe6 Sg6#

View in Helpmate Analyzer

FEN: R1qN1r2/1pbnk3/7p/2P5/B1r2NK1/2p5/8/8

External links:

Shorokhov, Boris

Orbit, 2011

Example: Anticipatory unpin
h#2 2.1... (6+12)

1.Sa3 S4c3 2.Rxc3 Sxb4#
1.Ba5 S2c3 2.Sxc3 Sc5#

View in Helpmate Analyzer

FEN: 5r2/Kp6/1P6/3b4/Nbp1n3/1r1kP3/Npn1p3/q1B5