/***************************************************************************/
/* micro-Max version 4.8 (~1950 characters) features: */
/* - recursive negamax search */
/* - all-capture quiescence search with MVV/LVA priority */
/* - (internal) iterative deepening */
/* - best-move-first 'sorting' */
/* - a hash table storing score and best move */
/* - futility pruning */
/* - king safety through magnetic frozen king */
/* - null-move pruning */
/* - Late-move reductions */
/* - full FIDE rules (expt minor promotion) and move-legality checking */
/* - keep hash + rep-draw detect */
/* - end-game Pawn-push bonus, new piece values, gradual promotion */
/***************************************************************************/
/* The Fairy-Max version reads the piece description from a file fmax.ini */
/* The format supports many fairy pieces, including hoppers. */
/* f) now supports 15 piece types, by requisitioning WHITE bit */
/* g) supports larger board width. */
/* h) castling bug ('in-check by non-captures') corrected */
/* i) rep-draw bug ('side-to-move') corrected */
/* k) allow user underpromotions, recognize & ignore 'variant' command */
/* l) edit bug corrected (i & j file clear) */
/* m) piece values no longer quantized, game-stage counting bug corrected */
/* n) edit-menu K-side castling bug corrected. */
/* o) retrieve the requested variant from the .ini file */
/* p) clear hash table on variant switch */
/* q) reduced piece-material count for better Pawn push */
/* r) hash-table bug corrected (X still ORed with flags) */
/* s) Bug that prevented initialization center points corrected */
/* t) castling bug after edit fixed */
/* u) converted to protocol 2; ping implemented */
/* v) white e.p. rights hash bug fixed; */
/* w) piece indicators programable, multi-path support */
/* x) e.p. changed to support Berolina Pawns */
/* y) capture value of 6-7th-rank Pawn reduced in Shatranj */
/* z) bug in promotion input corrected */
/* A) stalemate-detection bug in printResult fixed */
/* B) Invalidate hash on game-level promotion (might be under-promotion!) */
/* C) King move evaluation based on negative piece value in stead of nr */
/* D) WB memory command added, undo fixed */
/* E) 15th piece read in */
/* F) accepts ini fileargument */
/* G) bug in calculation ASCII promotion character fixed */
/* H) unified normal and shatranj source */
/* J) rewrite under-promotion code, fixes persistent bug there */
/* K) o[] and oo[] made int to make fairymax work on big-endian machines */
/* L) added Resign option feature (using new WB protocol) */
/* M) char -> signed char for better portability */
/* N) add PV printing and multi-PV support */
/* O) non-Rook castling, 6th-rank promotion, independent B/W piece naming */
/***************************************************************************/
4/6/2009 Unified source of ShaMax and Fairy-Max into single fmax.c file, and
created this ChangeLog from the until then self-documenting source.
6/2/2009 Promotion code rewitten to not refer to default piece characters.
9/3/2009 Fixed big-endian bug in reading inifile (char with int format),
and added some option features to make Fairy-Max useful as test
engine for GUIs that want to implement the WB protocol extensions.
9/16/2009 Made signedness of char in AI explicit
27/12/2009 Added PV updating through the triangular-array method. Also added
a multi-PV option to print lines within a certain sccore margin.
15/1/2010 Improved Makefile, updated docs
Implement independent naming of white and black pieces. (So mirror-
image pieces can use same letter.)
Change castling code to allow castling with any corner piece type.
Implement 6th-rank promotion based on 'Queen' value.
Makruk added as new variant to the fmax.ini file.
16/1/2010 Fixed bug in Shatranj result claims.
Flip eval sign when side-to-move changes through WB color command.
17/1/2010 Removed Shatranj stalemate claim again, as it was never triggered.
