Self-pin/unpin

In the course of the solution, a piece is first self-pinned, then unpinned again.

See also: Bajtay theme; Pin/unpin.

Paliulionis, Viktoras

Match Latvia-Lithuania-Leningrad, 1986

1-2 Place

Example: Self-pin/unpin
h#2 b) -wSb4  (5+2)

a) 1.Qc5+ Sd5 2.Qa3 Sb6#
b) 1.Qe3+ Be4 2.Qa3 Bc6#

View in Helpmate Analyzer

FEN: 8/8/8/4K3/kN6/3B4/P7/2q1B3

External links:

Fougiaxis, Charalampos Harry

Shahmat, Israel Ring Tourney, 1985

1st Prize

Example: Self-pin/unpin
h#2 b) bPd6→b5  (10+11)

a) 1.Qxc5 Qxe4 2.Se2 Qxa4#
b) 1.Rxd5 Qxc3 2.Sd2 Qf6#

View in Helpmate Analyzer

FEN: 8/7r/PPkp4/2NNr1p1/pq2n3/bPn5/2Q2PB1/2R1Kb2

External links:

Bogdanov, Evgeny

Schach-Echo, 1983

Example: Self-pin/unpin
h#2 2.1... (6+6)

1.Bxe5+ Sd5 2.Bd4 Sf6#
1.Rxe5+ Sf5 2.Re4 Sg7#

View in Helpmate Analyzer

FEN: 8/8/3r2q1/R3P2k/3br1n1/3KN1P1/8/2B5

External links:

Piliczewski, Bogusz

The Problemist, 2013

2nd HM

Example: Self-pin/unpin
h#3 4.1... (6+9)

1.Sb1 Sxe4 2.Sc3 Sc2 3.Sexd5 Sd2#
1.Sxd5 Sd1 2.Sc3 Sc2 3.Sb3 Sde3#
1.Sb3 Sxf3 2.Sd4 Sa2 3.Sxd5 Sd2#
1.Sc2 Sxf5 2.Sd4 Sa2 3.S2b3 Se3#

View in Helpmate Analyzer

FEN: 4B2K/8/q7/3P1p2/1PkNp3/2Npnp2/3n4/b7

External links:

Kiss, Janos

(corr. Y. Bilokin, 2021)

Schach-Echo, 1975

Example: Self-pin/unpin
h#5  (3+15)

1.Bg8 Sxe5 2.Qa8+ Sc6 3.Qa1 Sxd4 4.Rb2 Sxe2 5.Rc1 Sc3#

Self-pin/unpin (4x).

View in Helpmate Analyzer

FEN: 4q3/2n4b/3p2N1/1p2b3/1r1pK1p1/3P1pp1/2p1n3/1k2r3

External links:

Abdurahmanović, Fadil

Orbit, 2006

2nd Prize

Example: Self-pin/unpin
h#4  (4+9)

1.Sd1+ Sf2 2.Sf6 Se4 3.Sf2 Sd6 4.S6e4 Sf5#

View in Helpmate Analyzer

FEN: 5K2/8/8/8/4n1p1/3pk1Pp/3pbnP1/5r1N

External links:

Meinking, Daniel E.

Wiehagen, Rolf

F. Abdurahmanovic-60 JT, StrateGems, 2000

2nd Prize

Example: Self-pin/unpin
h#4.5 2.1... (4+9)

1...Re2 2.Kc4 Rxa2+ 3.Kb3 Rf2 4.Bb1 Be2 5.Ka2 Bc4#
1...Be2 2.Ke4 Bxg4+ 3.Kf4 Bd1 4.g5 Re2 5.Kg4 Re4#

View in Helpmate Analyzer

FEN: 8/8/6p1/3knb2/6p1/p5p1/p5P1/r3RB1K

External links: