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Pressure-Temperature Phase Diagram [1]

Vapor, (Vapor Chess)
an UCI compliant chess engine by Mike Leany, written in C, since October 2010 no longer vaporware [2], and since November 2019 published as open source on GitHub [3].


Vapor is a rudimentary, didactic engine and lacks state of the art search techniques and evaluation terms. It represents the board with a little-endian file-rank mapped bitboard definition, and applies Hyperbola Quintessence to determine sliding piece attacks [4]. Search is plain alpha-beta with transposition table, check extension and quiescence inside the iterative deepening loop [5], considering material and piece-square tables for pawns and knights as evaluation terms at the leaves [6].

See also


External Links

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