No less three self-blocks on the same square without black dual avoidance.
See also: Stocchi Blocks.
Bakcsi, György
Sahs/Shakhmaty (Riga), 1961
2nd Prize
1.Sxe2
Rxg7
2.dxe5
Rf7#
1.Sh5
Rg6
2.Bxe5
Bc2#
1.Se4
Rg4
2.Sxe5
Rf4#
Sonnenfeld, Felix Alexander
Schach-Echo, 1976
1.Rxg3
Rb1
2.Rxg5
Rf1#
1.Bxd2
Bf1
2.Bxg5
Bh3#
1.h6
d3
2.hxg5
dxe4#
1.Se6
Sg6
2.Sxg5
Sh4#
Abdurahmanović, Fadil
Schach-Echo, 1980 (v)
4th HM
1.Se3
Sxf3+
2.Qe5
Rd4#
1.Sd4
Sc4+
2.R1e5
Se3#
1.Se7
Sd7+
2.Be5
Sf6#
1.Sf6
Sxc6+
2.R8e5
Se7#
Shorokhov, Boris
Azemmour TT-4, Belgrade, 2016
1st-3rd Prize
1.Rxb4
Bxg4
2.Rd4
Bf5#
1.Scxe2
Rc3
2.Sd4
Re3#
1.Bxc5
Sd5
2.Bd4
Sf6#
FEN: 8/bpp2K2/4P3/1pR1P2R/1N2knp1/2n5/br1PBrP1/5q2
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