Ingo+Althöfer

a German mathematician, computer scientist, game researcher, game inventor, and full professor at //Faculy for Mathematics and Computer Science//, [|Friedrich Schiller University of Jena].
 * Home * People * Ingo Althöfer**
 * [[image:IconAlthoefer.jpg link="http://www.althofer.de/"]] ||~  || **Ingo Althöfer**,

Ingo Althöfer's professional as well as private research interests cover a broad range of AI-issues, search algorithms, evaluation, creating and inventing new, interesting games such as EinStein würfelt nicht!, and triple-brain (3-Hirn) (two- or k-best mode, where an arbiter instance choses from the best moves provided by one or more chess-programs). 3-Hirn has become a "brand name" for books, games and software, distributed by Ingo's small publishing company [|3-Hirn-Verlag]. || toc =Photos=
 * Ingo Althöfer ||~  ||^   ||

Chess960CWC 2005

 * [[image:Altenhoeffer_Ingo_CCM5_Foto_Eric_van_Reem_100_1617.JPG width="640" link="http://www.chesstigers.de/index_news.php?id=474&rubrik=1&PHPSESSID=23dcaa674febea90834693393f386e25"]] ||
 * Chess960CWC 2005: [|Peter Svidler], Arbiter Ingo Althöfer and Roland Pfister ||

Tilburg 2011
=3-Hirn's Motto= By Christian Posthoff and Günter Reinemann 1987 : Nicht oder sondern
 * [[image:IngoRichardEinSteing.JPG width="640" ]] ||
 * Ingo Althöfer and Richard J. Lorentz playing EinStein würfelt nicht! at the 16th Computer Olympiad, 2011 ||
 * //Der Mensch kann, aber die Maschine nicht...//**
 * //Der Mensch kann nicht, aber die Maschine kann...//**
 * //Der Mensch kann, aber Mensch und Maschine zusammen können (viel mehr).//**

Not or //**Humans cannot, but machine can...**// but
 * //Humans can, but machine can not...//**
 * //Humans can, but humans and machine together can (much more).//**

=Selected Publications=

1985 ...

 * Ingo Althöfer (**1985**). //Das 3-Hirn - Entscheidungsteilung im Schach.// Computerschach und Spiele, pp. 20-22.
 * Ingo Althöfer (**1986**). //[|Asymptotic Properties of Certain Competition Systems in Artificial Intelligence and Ecology]//. Ph.D. thesis, [|University of Bielefeld], advisor Rudolf Ahlswede
 * Ingo Althöfer (**1988**). //Das 3-Hirn-Konzept//. MODUL, pp. 42-46
 * Ingo Althöfer (**1988**). //Root Evaluation Errors: How they Arise and Propagate//. ICCA Journal, Vol. 11, Nos. 2/3
 * Ingo Althöfer (**1988**). //On the Complexity of Searching Game Trees and Other Recursion Trees//. [|Journal of Algorithms], Vol. 9, No. 4
 * Ingo Althöfer (**1989**). //An Incremental Negamax Algorithm.// Advances in Computer Chess 5
 * Ingo Althöfer (**1989**). //Generalized Minimax Algorithms are no Better Error Correctors than Minimax Itself.// Advances in Computer Chess 5
 * Ingo Althöfer (**1989**). //Retrograde Analysis and two Computerizable Definitions of the Quality of Chess Games.// ICCA Journal, Vol. 12, No. 2
 * Ingo Althöfer (**1989**). //A Summary of some Results in Theoretical Game Tree Search and the 'Dreihirn'-Experiment//. Workshop on New Directions in Game-Tree Search

1990 ...

 * Ingo Althöfer (**1990**). //Compressing Chess Games with the Help of a fast Deterministic Chess Program.// ICCA Journal, Vol. 13, No. 4
 * Ingo Althöfer, Klaus-Uwe Koschnick (**1991**). //[|On the convergence of “Threshold Accepting”]//. [|Applied Mathematics and Optimization], Vol. 24, No. 1 » Simulated Annealing
 * Ingo Althöfer (**1991**). //On pathology in game tree and other recursion tree models//. Habilitation Thesis (June 1991), Faculty of Mathematics, [|University of Bielefeld].
 * Ingo Althöfer (**1991**). //An Additive Evaluation Function in Chess.// ICCA Journal, Vol. 14, No. 3
 * Ingo Althöfer (**1991**). //Selective trees and majority systems: two experiments with commercial chess computers//. Advances in Computer Chess 6
 * Ingo Althöfer (**1991**): //[|Data compression using an intelligent generator: The storage of chess games as an example]//. [|Artificial Intelligence], Vol. 52, No. 1
 * Rudolf Ahlswede, Ingo Althöfer (**1991**). //The Asymptotic Behaviour of Diameters in the Average//. [|University of Bielefeld], [|zipped ps]
 * Ingo Althöfer, [|Torsten Sillke] (**1992**). //An "Average Distance" Inequality for Subsets of the Cube//. [|Journal of Combinatorial Theory, Series B, Vol. 56]
 * Ingo Althöfer (**1992**). //On Asymmetries in Chess Programs.// ICCA Journal, Vol. 15, No. 1
 * Ingo Althöfer (**1992**). //Move Ordering by Time Ordering//. Correspondence, ICCA Journal, Vol. 15, No. 2 » Root Move Ordering
 * Ingo Althöfer, Bernhard Balkenhol (**1992**). //A Game Tree with Distinct Leaf Values which is Easy for the Alpha-Beta Algorithm//. [|Artificial Intelligence], Vol. 52, No. 2
 * Ingo Althöfer (**1993**). //A Parallel Game Tree Search Algorithm with a Linear Speedup//. [|Journal of Algorithms], Vol. 15, No. 2
 * Ingo Althöfer (**1993**). //Das 3-Hirn - Eine Zwischenbilanz.// Computerschach und Spiele
 * Ingo Althöfer (**1993**). //On Telescoping Linear Evaluation Functions.// ICCA Journal, Vol. 16, No. 2
 * Ingo Althöfer, Klaus-Uwe Koschnick (**1993**). //[|On the Deterministic Complexity of Searching Local Maxima]//. [|Discrete Applied Mathematics], Vol. 43, No. 2
 * Ingo Althöfer, Chrilly Donninger, Ulf Lorenz, Valentin Rottmann (**1994**). //On Timing, Permanent Brain and Human Intervention//. Advances in Computer Chess 7
 * Ingo Althöfer, Bernhard Walter (**1994**). //Weak Zugzwang: Statistics on some Chess Endgames//. ICCA Journal, Vol. 17, No. 2

1995 ...

 * Ingo Althöfer, Imre Leader (**1995**). //[|Correlation of Boolean Functions and Pathology in Recursion Trees]//. [|SIAM Journal on Discrete Mathematics], Vol. 8, No. 4
 * Ingo Althöfer (**1996**). //Doppelfritz mit Chef.// Computerschach und Spiele, October. pp. 33-36
 * Ingo Althöfer (**1996**). //Meine Geschichte mit dem Mehrvarianten-Modus.// Computerschach und Spiele. December, p. 56.
 * Ingo Althöfer (**1997**). //A Symbiosis of Man and Machine Beats Grandmaster Timoshchenko.// ICCA Journal, Vol. 20, No. 1
 * Ingo Althöfer (**1997**). //On the k-best Mode in Computer Chess: Measuring the Similarity of Move Proposals.// ICCA Journal, Vol. 20, No. 3
 * Ingo Althöfer (**1998**). //LIST-3-HIRN vs. Grandmaster Yusupov. - A Report on a Very Experimental Match, Part I: The Games.// ICCA Journal, Vol. 21, No. 1
 * Ingo Althöfer (**1998**). //13 Jahre 3-Hirn – Meine Schach-Experimente mit Mensch-Maschinen-Kombinationen.// ISBN 3-00-003100-6.
 * Ingo Althöfer (**1999**). //Advanced Shuffle Chess with Technical Improvements.// ICCA Journal, Vol. 22, No. 4

2000 ...

 * Ingo Althöfer, [|Ning Cai], Gunter Dueck, [|Levon Khachatrian], [|Mark S. Pinsker], [|András Sárközy], Ingo Wegener, [|Zhen Zhang] (Eds.) (**2000**). //[|Numbers, Information and Complexity]//. 50 articles in honour of Rudolf Ahlswede, [|Kluwer Academic Publishers], Boston
 * Ingo Althöfer (**2000**). //A One-Sided Advanced Chess Match. Part 1: The Games.// ICGA Journal, Vol. 23, No. 3
 * Ingo Althöfer (**2001**). //Grandmaster Chess with one-sided Computer Help.// ICGA Journal, Vol. 24, No.4
 * Ingo Althöfer (**2002**). //[|Clobber – A New Game with Very Simple Rules]//. ICGA Journal, Vol. 25, No. 2
 * Ingo Althöfer (**2002**). //Inventing Game Variants with Computer Help//. 7th Computer Olympiad Workshop
 * Ingo Althöfer, Raymond Georg Snatzke (**2002**). //[|Playing Games with Multiple Choice Systems]//. CG 2002
 * Ingo Althöfer (**2003**). //A 20-Choice Experiment in Go for Human+Computer//. ICGA Journal, Vol. 26, No. 2
 * Ingo Althöfer, Jens Lieberum, Johan de Koning, Stefan Meyer-Kahlen, Thomas Rolle, Jörg Sameith (**2003**). //Five visualizations of the k-best mode.// ICGA Journal, Vol. 26, No. 3
 * Ingo Althöfer (**2003**). //Computer-Aided Game Inventing//. [|Friedrich Schiller University of Jena], [|pdf]
 * Ingo Althöfer (**2004**). //[|Improved game play by multiple computer hints]//. [|Theoretical Computer Science], Vol. 313, No. 3

2005 ...

 * Ingo Althöfer, Susanne Heuser (**2005**). //Randomised Evaluations in Single-Agent Search//. ICGA Journal, Vol. 28, No. 1
 * Ingo Althöfer (**2008**). //On the Laziness of Monte-Carlo Game Tree Search in Non-tight Situations//. Technical Report, [|pdf] » Monte-Carlo Tree Search

2010 ...

 * Ingo Althöfer (**2010**). //Automatic Generation and Evaluation of Recombination Games//. Doctoral Dissertation by Cameron Browne, Review, ICGA Journal, Vol. 33, No. 4
 * Ingo Althöfer (**2010**). //Game Self-Play with Pure Monte-Carlo: The Basin Structure//. [|pdf] » Monte-Carlo Tree Search
 * 2011**
 * Ingo Althöfer (**2011**). //John Tromp in the Style of David Levy: 4-0 win in the Go bet//. ICGA Journal, Vol. 34, No. 2 » John Tromp
 * Ingo Althöfer (**2011**). //On Board-Filling Games with Random-Turn Order and Monte Carlo Perfectness//. Advances in Computer Games 13
 * Ingo Althöfer (**2011**). //On Games with Random-Turn Order and Monte Carlo Perfectness//. ICGA Journal, Vol. 34, No. 4
 * 2012**
 * Ingo Althöfer (**2012**). //The Origin of Dynamic Komi//. ICGA Journal, Vol. 35, No. 1
 * Ingo Althöfer (**2012**). //Side Report: Popular Video Livestream//. ICGA Journal, Vol. 35, No. 1 » Advances in Computer Games 13
 * Ingo Althöfer (**2012**). //PAN wins Clobber Tournament//. ICGA Journal, Vol. 35, No. 1 » 16th Computer Olympiad
 * Ingo Althöfer (**2012**). //Havannah – The Old Man and the C’s//. ICGA Journal, Vol. 35, No. 4 » Havannah
 * 2013**
 * Ingo Althöfer (**2013**). //Remarks on History and Presence of Game Tree Search and Research//. [|Information Theory, Combinatorics, and Search Theory] - In Memory of Rudolf Ahlswede. [|Lecture Notes in Computer Science], [|Springer], ISBN 978-3-642-36898-1
 * Ingo Althöfer, Wesley Turner (**2013**). //Anomalies of Pure Monte Carlo Search in Monte Carlo Perfect Games//. CG 2013
 * Ingo Althöfer (**2013**). //The wild Years are gone: Monte Carlo in Smoother Waters//. Conference Report CG 2013, ICGA Journal, Vol. 36, No. 3
 * Ingo Althöfer (**2013**). //PAN Wins Clobber Tournament - King of Clobber - De Koning and his PAN//. ICGA Journal, Vol. 36, No. 3 » 17th Computer Olympiad, Johan de Koning
 * 2014**
 * Ingo Althöfer, [|Roland Voigt] (**2014**). //[|Spiele, Rätsel, Zahlen]//. [|Springer Spektrum], ISBN 978-3-642-55301-1, [|Zusatzmaterial] (German)
 * Ingo Althöfer, Raymond Georg Snatzke (**2014**). //The codecentric Go Challenge 2014: Franz-Josef Dickhut vs. CRAZY STONE//. ICGA Journal, Vol. 37, No. 4

2015 ...

 * Ingo Althöfer, Matthias Beckmann, Friedrich Salzer (**2015**). //On some Random Walk Games with Micro Control//. Advances in Computer Games 14
 * Ingo Althöfer, Michael Hartisch (**2015**). //The Effect of Biasing Win Conditions//. [|Game & Puzzle Design, Vol. 1, No. 1]
 * Ingo Althöfer (**2015**). //Obituary: John Nash, A Beautiful Mind has Gone//. ICGA Journal, Vol. 38, No. 2 » John Nash
 * Michael Hartisch, Ingo Althöfer (**2015**). //Optimal Robot Play in Certain Chess Endgame Situations//. ICGA Journal, Vol. 38, No. 3
 * Ingo Althöfer, Richard J. Lorentz, Matthias Beckmann (**2015**). //Advances in Computer Games Conference 2015//. Report, ICGA Journal, Vol. 38, No. 3 » Advances in Computer Games 12
 * Ingo Althöfer (**2015**). //HANFRIED wins EinStein Würfelt Nicht! Tournament//. ICGA Journal, Vol. 38, No. 4 » 18th Computer Olympiad | EWN
 * 2016**
 * Raphael Thiele, Ingo Althöfer (**2016**). //An Analysis of Majority Systems with Dependent Agents in a Simple Subtraction Game//. CG 2016
 * Ingo Althöfer (**2016**). //Computer-Aided Go: Chess as a Role Model//. CG 2016

=Forum Posts=
 * [|Re: AEGON news 2: dreihirn] by Stefan Meyer-Kahlen, rgcc, April 24, 1996 » Aegon 1996
 * [|A diary on 3-Hirn chess] by Ingo Althöfer, rgcc, December 27, 1996
 * [|3-Hirn History: Game 12] by Ingo Althöfer, rgcc, March 29, 1997 » Aegon 1992, Zugzwang (Program)
 * [|Multi-Fritz with Boss versus IM R. Vasquez] by Ingo Althöfer, CCC, March 09, 1999 » Fritz
 * [|Artikel von John Nunn] by Ingo Althöfer, CSS Forum, January 08, 2014 (German)

=External Links=
 * [|Ingo Althöfer Homepage]
 * [|Prof. Dr. Ingo Althöfer - Chair Operations Research]
 * [|The Mathematics Genealogy Project - Ingo Althöfer]
 * [|Ingo Althoefer's ICGA Tournaments]
 * [|Ingo Althöfer] from the [|Fano Experimental Web Server] by David Eppstein
 * [|Prof. Dr. Ingo Althöfer] - Computerschach und Spiele Author profile
 * [|Palestine Chess Programmers Prize]

Pictorial reports
include page="Ingo Althöfer reports to include" =References= =What links here?= include page="Ingo Althöfer" component="backlinks" limit="120"
 * Up one level**