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'''[[Main Page|Home]] * [[Engines]] * Killer (NL)'''
'''Killer''',<br/>
a chess program developed by [[Kees de Kruif]] starting in the mid 70s over a period of five years, written in [[Pascal]]. Killer played the [[DOCCC 1981|First Dutch Computer Chess Championship 1981]] where it ran on a [[PDP-11]] and became eighth of 13 with 3½ out of 8. In contrast to most other chess programs, Killer is not based on deep [[Search|search]] and fast [[Move Generation|move generation]], but applies general chess principles such as optimization of [[Mobility|mobility]], and further relies on [[Pattern Recognition|pattern recognition]], for instance to determine [[Tactics|tactical motives]] like [[Knight Pattern#KnightForks|knight forks]]. Because Killer in general only lookes one [[Ply|ply]] ahead, it is vulnerable on [[Combination|combinations]], and therefor tries to defend all of its pieces sufficiently, even though it may fail on [[Overloading|overloaded]] and [[Pin|pinned pieces]] <ref>[[Kees de Kruif]] ('''1982'''). ''Killer''. in [[Peter van Diepen]] (ed.) ('''1982'''). ''Toernooibulletin van het Nederlands kampioenschap computerschaak 1981''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/03-1982,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201981.pdf pdf] hosted by [[Hein Veldhuis]]</ref>.
=Selected Games=
<span id="KillerTiny"></span>[[DOCCC 1981|DCCC 1981]], [[Killer (NL)|Killer]] - [[Tiny Chess 86|Tiny Chess '86]] <ref>[[Peter van Diepen]] (ed.) ('''1982'''). ''Toernooibulletin van het Nederlands kampioenschap computerschaak 1981''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/03-1982,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201981.pdf pdf] hosted by [[Hein Veldhuis]]</ref>, [https://en.wikipedia.org/wiki/Blackmar%E2%80%93Diemer_Gambit Blackmar–Diemer Gambit]
<pre>
[Event "DCCC 1981"]
[Site "Utrecht NED"]
[Date "1981.09.27"]
[Round "7-9"]
[White "Killer"]
[Black "Tiny Chess '86"]
[Result "1/2-1/2"]
1.d4 Nf6 2.f3 d5 3.e4 dxe4 4.Nc3 exf3 5.Qxf3 Qxd4 6.Be3 Qd8 7.Rd1 Nbd7 8.Bc4 a6
9.Nh3 Rg8 10.O-O e6 11.Qg3 Bd6 12.Qe1 Nb6 13.Be2 Nfd5 14.Bg5 Qd7 15.Rf2 Bc5
16.Nxd5 Nxd5 17.Rxd5 Qxd5 18.Kh1 Bxf2 19.Qxf2 Qxa2 20.Qd4 Qd5 21.Qa4+ b5 22.Qa1
Qc5 23.Qb1 Bd7 24.b4 Qd4 25.Qe1 Qe4 26.Qf2 Qxb4 27.Qg1 Qc3 28.Bd3 Rf8 29.Nf2 f5
30.Qb1 h6 31.Bh4 g5 32.Bg3 h5 33.Nh3 f4 34.Bg6+ Ke7 35.Bxf4 gxf4 36.Nf2 Qd4
37.Qg1 f3 38.g3 h4 39.gxh4 Qxh4 40.c3 Qf4 41.Bd3 Rg8 42.Qa1 Bc6 43.Qa3+ Kf6
44.Qa1 Ke7 45.Qa3+ Kf6 46.Qa1 Ke7 47.Qa3+ Kf6 48.Qa1 1/2-1/2
</pre>
=See also=
* [[Killer Chess]]
* [[Killer Heuristic]]
* [[Killer Move]]
* [[Mate Killers]]
=Namesake=
* [[Killer]] by [[Mario Carbonell Martinez]], [[German Blanquer]] and [[Alvaro Benlloch]]
=External Links=
* [http://www.csvnsupplementsite.nl/csvnp2.html CSVNP2 - Eerste Nederlands Kampioenschappen Computerschaken] (Dutch)
* [https://en.wikipedia.org/wiki/Killer Killer from Wikipedia]
* [https://en.wikipedia.org/wiki/Killer_application Killer application from Wikipedia]
=References=
<references />
'''[[Engines|Up one level]]'''
'''Killer''',<br/>
a chess program developed by [[Kees de Kruif]] starting in the mid 70s over a period of five years, written in [[Pascal]]. Killer played the [[DOCCC 1981|First Dutch Computer Chess Championship 1981]] where it ran on a [[PDP-11]] and became eighth of 13 with 3½ out of 8. In contrast to most other chess programs, Killer is not based on deep [[Search|search]] and fast [[Move Generation|move generation]], but applies general chess principles such as optimization of [[Mobility|mobility]], and further relies on [[Pattern Recognition|pattern recognition]], for instance to determine [[Tactics|tactical motives]] like [[Knight Pattern#KnightForks|knight forks]]. Because Killer in general only lookes one [[Ply|ply]] ahead, it is vulnerable on [[Combination|combinations]], and therefor tries to defend all of its pieces sufficiently, even though it may fail on [[Overloading|overloaded]] and [[Pin|pinned pieces]] <ref>[[Kees de Kruif]] ('''1982'''). ''Killer''. in [[Peter van Diepen]] (ed.) ('''1982'''). ''Toernooibulletin van het Nederlands kampioenschap computerschaak 1981''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/03-1982,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201981.pdf pdf] hosted by [[Hein Veldhuis]]</ref>.
=Selected Games=
<span id="KillerTiny"></span>[[DOCCC 1981|DCCC 1981]], [[Killer (NL)|Killer]] - [[Tiny Chess 86|Tiny Chess '86]] <ref>[[Peter van Diepen]] (ed.) ('''1982'''). ''Toernooibulletin van het Nederlands kampioenschap computerschaak 1981''. [http://www.schaakcomputers.nl/hein_veldhuis/database/files/03-1982,%20toernooibulletin%20van%20het%20Nederlands%20kampioenschap%20computerschaak%201981.pdf pdf] hosted by [[Hein Veldhuis]]</ref>, [https://en.wikipedia.org/wiki/Blackmar%E2%80%93Diemer_Gambit Blackmar–Diemer Gambit]
<pre>
[Event "DCCC 1981"]
[Site "Utrecht NED"]
[Date "1981.09.27"]
[Round "7-9"]
[White "Killer"]
[Black "Tiny Chess '86"]
[Result "1/2-1/2"]
1.d4 Nf6 2.f3 d5 3.e4 dxe4 4.Nc3 exf3 5.Qxf3 Qxd4 6.Be3 Qd8 7.Rd1 Nbd7 8.Bc4 a6
9.Nh3 Rg8 10.O-O e6 11.Qg3 Bd6 12.Qe1 Nb6 13.Be2 Nfd5 14.Bg5 Qd7 15.Rf2 Bc5
16.Nxd5 Nxd5 17.Rxd5 Qxd5 18.Kh1 Bxf2 19.Qxf2 Qxa2 20.Qd4 Qd5 21.Qa4+ b5 22.Qa1
Qc5 23.Qb1 Bd7 24.b4 Qd4 25.Qe1 Qe4 26.Qf2 Qxb4 27.Qg1 Qc3 28.Bd3 Rf8 29.Nf2 f5
30.Qb1 h6 31.Bh4 g5 32.Bg3 h5 33.Nh3 f4 34.Bg6+ Ke7 35.Bxf4 gxf4 36.Nf2 Qd4
37.Qg1 f3 38.g3 h4 39.gxh4 Qxh4 40.c3 Qf4 41.Bd3 Rg8 42.Qa1 Bc6 43.Qa3+ Kf6
44.Qa1 Ke7 45.Qa3+ Kf6 46.Qa1 Ke7 47.Qa3+ Kf6 48.Qa1 1/2-1/2
</pre>
=See also=
* [[Killer Chess]]
* [[Killer Heuristic]]
* [[Killer Move]]
* [[Mate Killers]]
=Namesake=
* [[Killer]] by [[Mario Carbonell Martinez]], [[German Blanquer]] and [[Alvaro Benlloch]]
=External Links=
* [http://www.csvnsupplementsite.nl/csvnp2.html CSVNP2 - Eerste Nederlands Kampioenschappen Computerschaken] (Dutch)
* [https://en.wikipedia.org/wiki/Killer Killer from Wikipedia]
* [https://en.wikipedia.org/wiki/Killer_application Killer application from Wikipedia]
=References=
<references />
'''[[Engines|Up one level]]'''
