ICGA Journal - Volume 22, issue 4 - Journals

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Table of Contents / Editorial

Authors: van den Herik, Jaap

Article Type: Other

DOI: 10.3233/ICG-1999-22401

Citation: ICGA Journal, vol. 22, no. 4, pp. 193-194, 1999

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KQQKQQ and the Kasparov-World Game

Authors: Nalimov, E. V. | Wirth, C. | Haworth, G.McC.

Article Type: Research Article

Abstract: The 1999 Kasparov-World game for the first time enabled anyone to join a team playing against a World Chess Champion via the web. It included a surprise in the opening, complex middle-game strategy and a deep ending. As the game headed for its mysterious finale, the World Team requested a KQQKQQ endgame table and was provided with two by the authors. This paper describes their work, compares the methods used, examines the issues raised and summarises the concepts involved for the benefit of future workers in the endgame field. It also notes the contribution of this endgame to chess itself.

DOI: 10.3233/ICG-1999-22402

Citation: ICGA Journal, vol. 22, no. 4, pp. 195-212, 1999

Price: EUR 27.50

Rotated Bitmaps, a New Twist on an Old Idea

Authors: Hyatt, Robert M.

Article Type: Research Article

Abstract: This paper describes some developments related to using bitmaps (64-bit integers using one bit for each square of the chessboard). In late 1994, after the ACM computer-chess event in Cape May, New Jersey, I decided to embark on a complete replacement chess program for CRAY BLITZ . I was interested in using the bitmap approach mentioned by Slate and Atkin in CHESS 4.x to determine for myself whether this approach was suitable for chess or not. In developing this new program, the concept of rotated bitmaps was developed, and this turned out to be what was …needed to make this type of data structure produce reasonable performance. Show more

DOI: 10.3233/ICG-1999-22403

Citation: ICGA Journal, vol. 22, no. 4, pp. 213-222, 1999

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Learning Piece-square Values using Temporal Differences

Authors: Beal, D.F. | Smith, M.C.

Article Type: Research Article

Abstract: This paper reports on the results obtained from using improved temporal difference learning methods to learn piece-square weight sets for use in a chess program. The learning takes place solely from self-play, starting from zero values. A comparison is made between values learnt from piece weights only, and piece weights plus positional weights. The weight sets obtained, when displayed as grey-scale diagrams matching chessboards, can be visually seen to correspond to various items of simple chess knowledge of the type found in elementary chess books, and regarded as basic information for beginning chess players. The paper also considers the effect …of the squashing function used to map evaluations into probabilities-to-win. Show more

DOI: 10.3233/ICG-1999-22404

Citation: ICGA Journal, vol. 22, no. 4, pp. 223-235, 1999

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The Kasparov-World Match

Authors: Marko, P. | Haworth, G.McC.

Article Type: Research Article

DOI: 10.3233/ICG-1999-22405

Citation: ICGA Journal, vol. 22, no. 4, pp. 236-238, 1999

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Two Strategic Shortcomings in Chess Programs

Authors: van Reek, J. | Uiterwijk, J.W.H.M. | van den Herik, H.J.

Article Type: Research Article

Abstract: Chess programs have great difficulty in finding the correct moves for the Strategic concepts consolidation and positional sacrifice . We suggest the application of two evaluation criteria as a solution, viz. the strengths of a blockade and the control over one’s own territory .

DOI: 10.3233/ICG-1999-22406

Citation: ICGA Journal, vol. 22, no. 4, pp. 239-240, 1999

Price: EUR 27.50