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Board.cpp
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Board.cpp
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/* This file is part of Qenolaba.
Copyright (C) 1997-2015 Josef Weidendorfer <[email protected]>
Qenolaba is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation, version 2.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/* Board represents a game state
* - play/take back moves
* - generate allowed moves
* - calculate rating for position
* - search for best move
*/
#include "Board.h"
#include "EvalScheme.h"
#include <QDateTime>
// #define MYTRACE 1
#if 0
#define CHECK(b) Q_ASSERT(b)
#else
#define CHECK(b)
#endif
static int ratedPositions, wonPositions, searchCalled, moveCount;
static int normalCount, pushCount, outCount, cutoffCount;
/*********************** Class PrincipalVariation *************************/
void PrincipalVariation::clear(int d)
{
int i,j;
for(i=0;i<maxDepth;i++)
for(j=0;j<maxDepth;j++) {
move[i][j].type = Move::none;
}
actMaxDepth = (d<maxDepth) ? d:maxDepth-1;
}
void PrincipalVariation::update(int d, Move& m)
{
int i;
if (d>actMaxDepth) return;
for(i=d+1;i<=actMaxDepth;i++) {
move[d][i]=move[d+1][i];
move[d+1][i].type = Move::none;
}
move[d][d]=m;
}
/****************************** Class Board ****************************/
/* Board for start of a game */
int Board::startBoard[]={
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
10, 1, 1, 1, 1, 1, 10, 10, 10, 10, 10,
10, 1, 1, 1, 1, 1, 1, 10, 10, 10, 10,
10, 0, 0, 1, 1, 1, 0, 0, 10, 10, 10,
10, 0, 0, 0, 0, 0, 0, 0, 0, 10, 10,
10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10,
10, 10, 0, 0, 0, 0, 0, 0, 0, 0, 10,
10, 10, 10, 0, 0, 2, 2, 2, 0, 0, 10,
10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 10,
10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 10,
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 };
/* first centrum of board, then rings around (numbers are indexes) */
int Board::order[]={
60,
61,72,71,59,48,49,
62,73,84,83,82,70,58,47,36,37,38,50,
63,74,85,96,95,94,93,81,69,57,46,35,24,25,26,27,39,51,
64,75,86,97,108,107,106,105,104,92,80,68,56,45,34,23,12,
13,14,15,16,28,40,52 };
/* See EvalScheme.{h|cpp}
*
// Ratings for fields are calculated out of these values
// (see setFieldValues)
int Board::ringValue[] = { 45, 35, 25, 10, 0 };
int Board::ringDiff[] = { 0, 10, 10, 8, 5 };
// Value added to board rating according to the difference of
// stones in game of player1 and player2
int Board::stoneValue[]= { 0,-800,-1800,-3000,-4400,-6000 };
// Default Values for moves values (see Move.h)
int Board::moveValue[]= { 40,30,30, 15,14,13, 5,5,5, 2,2,2, 1 };
// Default Values for inARow values (see Move.h)
int Board::inARowValue[]= { 2, 5, 4, 3 };
*/
int Board::fieldValue[61];
int Board::direction[]= { -11,1,12,11,-1,-12,-11,1 };
Board::Board()
{
clear();
breakOut = bUpdateSpy = false;
spyLevel = 1;
spyDepth = 0;
debug = 0;
realMaxDepth = 1;
_evalScheme = 0;
}
void Board::setEvalScheme(EvalScheme* scheme)
{
if (!scheme)
scheme = new EvalScheme( QString("Default") );
_evalScheme = scheme;
setFieldValues();
}
void Board::setFieldValues()
{
if (!_evalScheme) return;
int i, j = 0, k = 59;
int ringValue[5], ringDiff[5];
for(i=0;i<5;i++) {
ringDiff[i] = _evalScheme->ringDiff(i);
ringValue[i] = _evalScheme->ringValue(i);
if (ringDiff[i]<1) ringDiff[i]=1;
}
fieldValue[0] = ringValue[0];
for(i=1;i<7;i++)
fieldValue[i] = ringValue[1] + ((j+=k) % ringDiff[1]);
for(i=7;i<19;i++)
fieldValue[i] = ringValue[2] + ((j+=k) % ringDiff[2]);
for(i=19;i<37;i++)
fieldValue[i] = ringValue[3] + ((j+=k) % ringDiff[3]);
for(i=37;i<61;i++)
fieldValue[i] = ringValue[4] + ((j+=k) % ringDiff[4]);
}
void Board::begin(int startColor)
{
int i;
for(i=0;i<AllFields;i++)
field[i] = startBoard[i];
storedFirst = storedLast = 0;
color = startColor;
color1Count = color2Count = 14;
moveNo = 0;
}
void Board::clear()
{
int i;
for(i=0;i<AllFields;i++)
field[i] = (startBoard[i] == out) ? out: free;
storedFirst = storedLast = 0;
color1Count = color2Count = 0;
moveNo = 0;
}
/* generate moves starting at field <startField> */
void Board::generateFieldMoves(int startField, MoveList& list)
{
int d, dir, c, actField;
bool left, right;
int opponent = (color == color1) ? color2 : color1;
Q_ASSERT( field[startField] == color );
/* 6 directions */
for(d=1;d<7;d++) {
dir = direction[d];
/* 2nd field */
c = field[actField = startField+dir];
if (c == free) {
/* (c .) */
list.insert(startField, d, Move::move1);
continue;
}
if (c != color)
continue;
/* 2nd == color */
left = (field[startField+direction[d-1]] == free);
if (left) {
left = (field[actField+direction[d-1]] == free);
if (left)
/* 2 left */
list.insert(startField, d, Move::left2);
}
right = (field[startField+direction[d+1]] == free);
if (right) {
right = (field[actField+direction[d+1]] == free);
if (right)
/* 2 right */
list.insert(startField, d, Move::right2);
}
/* 3rd field */
c = field[actField += dir];
if (c == free) {
/* (c c .) */
list.insert(startField, d, Move::move2);
continue;
}
else if (c == opponent) {
/* 4th field */
c = field[actField += dir];
if (c == free) {
/* (c c o .) */
list.insert(startField, d, Move::push1with2);
}
else if (c == out) {
/* (c c o |) */
list.insert(startField, d, Move::out1with2);
}
continue;
}
if (c != color)
continue;
/* 3nd == color */
if (left) {
if (field[actField+direction[d-1]] == free)
/* 3 left */
list.insert(startField, d, Move::left3);
}
if (right) {
if (field[actField+direction[d+1]] == free)
/* 3 right */
list.insert(startField, d, Move::right3);
}
/* 4th field */
c = field[actField += dir];
if (c == free) {
/* (c c c .) */
list.insert(startField, d, Move::move3);
continue;
}
if (c != opponent)
continue;
/* 4nd == opponent */
/* 5. field */
c = field[actField += dir];
if (c == free) {
/* (c c c o .) */
list.insert(startField, d, Move::push1with3);
continue;
}
else if (c == out) {
/* (c c c o |) */
list.insert(startField, d, Move::out1with3);
continue;
}
if (c != opponent)
continue;
/* 5nd == opponent */
/* 6. field */
c = field[actField += dir];
if (c == free) {
/* (c c c o o .) */
list.insert(startField, d, Move::push2);
}
else if (c == out) {
/* (c c c o o |) */
list.insert(startField, d, Move::out2);
}
}
}
void Board::generateMoves(MoveList& list)
{
int actField, f;
list.clear();
for(f=0;f<RealFields;f++) {
actField = order[f];
if ( field[actField] == color)
generateFieldMoves(actField, list);
}
}
void Board::playMove(const Move& m)
{
int f, dir, dir2;
int opponent = (color == color1) ? color2:color1;
CHECK( isConsistent() );
if (++storedLast == MvsStored) storedLast = 0;
/* Buffer full -> delete oldest entry */
if (storedLast == storedFirst)
if (++storedFirst == MvsStored) storedFirst = 0;
storedMove[storedLast] = m;
f = m.field;
CHECK( (m.type >= 0) && (m.type < Move::none));
CHECK( field[f] == color );
field[f] = free;
dir = direction[m.direction];
switch(m.type) {
case Move::out2: /* (c c c o o |) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == opponent );
CHECK( field[f + 4*dir] == opponent );
CHECK( field[f + 5*dir] == out );
field[f + 3*dir] = color;
break;
case Move::out1with3: /* (c c c o |) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == opponent );
CHECK( field[f + 4*dir] == out );
field[f + 3*dir] = color;
break;
case Move::move3: /* (c c c .) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == free );
field[f + 3*dir] = color;
break;
case Move::out1with2: /* (c c o |) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == opponent );
CHECK( field[f + 3*dir] == out );
field[f + 2*dir] = color;
break;
case Move::move2: /* (c c .) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == free );
field[f + 2*dir] = color;
break;
case Move::push2: /* (c c c o o .) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == opponent );
CHECK( field[f + 4*dir] == opponent );
CHECK( field[f + 5*dir] == free );
field[f + 3*dir] = color;
field[f + 5*dir] = opponent;
break;
case Move::left3:
dir2 = direction[m.direction-1];
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + dir2] == free );
CHECK( field[f + dir+dir2] == free );
CHECK( field[f + 2*dir+dir2] == free );
field[f+dir2] = color;
field[f+=dir] = free;
field[f+dir2] = color;
field[f+=dir] = free;
field[f+dir2] = color;
break;
case Move::right3:
dir2 = direction[m.direction+1];
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + dir2] == free );
CHECK( field[f + dir+dir2] == free );
CHECK( field[f + 2*dir+dir2] == free );
field[f+dir2] = color;
field[f+=dir] = free;
field[f+dir2] = color;
field[f+=dir] = free;
field[f+dir2] = color;
break;
case Move::push1with3: /* (c c c o .) => (. c c c o) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == opponent );
CHECK( field[f + 4*dir] == free );
field[f + 3*dir] = color;
field[f + 4*dir] = opponent;
break;
case Move::push1with2: /* (c c o .) => (. c c o) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == opponent );
CHECK( field[f + 3*dir] == free );
field[f + 2*dir] = color;
field[f + 3*dir] = opponent;
break;
case Move::left2:
dir2 = direction[m.direction-1];
CHECK( field[f + dir] == color );
CHECK( field[f + dir2] == free );
CHECK( field[f + dir+dir2] == free );
field[f+dir2] = color;
field[f+=dir] = free;
field[f+dir2] = color;
break;
case Move::right2:
dir2 = direction[m.direction+1];
CHECK( field[f + dir] == color );
CHECK( field[f + dir2] == free );
CHECK( field[f + dir+dir2] == free );
field[f+dir2] = color;
field[f+=dir] = free;
field[f+dir2] = color;
break;
case Move::move1: /* (c .) => (. c) */
CHECK( field[f + dir] == free );
field[f + dir] = color;
break;
default:
break;
}
if (m.isOutMove()) {
if (color == color1)
color2Count--;
else
color1Count--;
}
/* change actual color */
color = opponent;
moveNo++;
CHECK( isConsistent() );
}
bool Board::takeBack()
{
int f, dir, dir2;
int opponent = color;
Move& m = storedMove[storedLast];
CHECK( isConsistent() );
if (storedFirst == storedLast) return false;
/* change actual color */
color = (color == color1) ? color2:color1;
moveNo--;
if (m.isOutMove()) {
if (color == color1)
color2Count++;
else
color1Count++;
}
f = m.field;
CHECK( field[f] == free );
field[f] = color;
dir = direction[m.direction];
switch(m.type) {
case Move::out2: /* (. c c c o |) => (c c c o o |) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == color );
CHECK( field[f + 4*dir] == opponent );
CHECK( field[f + 5*dir] == out );
field[f + 3*dir] = opponent;
break;
case Move::out1with3: /* (. c c c |) => (c c c o |) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == color );
CHECK( field[f + 4*dir] == out );
field[f + 3*dir] = opponent;
break;
case Move::move3: /* (. c c c) => (c c c .) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == color );
field[f + 3*dir] = free;
break;
case Move::out1with2: /* (. c c | ) => (c c o |) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == out );
field[f + 2*dir] = opponent;
break;
case Move::move2: /* (. c c) => (c c .) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
field[f + 2*dir] = free;
break;
case Move::push2: /* (. c c c o o) => (c c c o o .) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == color );
CHECK( field[f + 4*dir] == opponent );
CHECK( field[f + 5*dir] == opponent );
field[f + 3*dir] = opponent;
field[f + 5*dir] = free;
break;
case Move::left3:
dir2 = direction[m.direction-1];
CHECK( field[f + dir] == free );
CHECK( field[f + 2*dir] == free );
CHECK( field[f + dir2] == color );
CHECK( field[f + dir+dir2] == color );
CHECK( field[f + 2*dir+dir2] == color );
field[f+dir2] = free;
field[f+=dir] = color;
field[f+dir2] = free;
field[f+=dir] = color;
field[f+dir2] = free;
break;
case Move::right3:
dir2 = direction[m.direction+1];
CHECK( field[f + dir] == free );
CHECK( field[f + 2*dir] == free );
CHECK( field[f + dir2] == color );
CHECK( field[f + dir+dir2] == color );
CHECK( field[f + 2*dir+dir2] == color );
field[f+dir2] = free;
field[f+=dir] = color;
field[f+dir2] = free;
field[f+=dir] = color;
field[f+dir2] = free;
break;
case Move::push1with3: /* (. c c c o) => (c c c o .) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == color );
CHECK( field[f + 4*dir] == opponent );
field[f + 3*dir] = opponent;
field[f + 4*dir] = free;
break;
case Move::push1with2: /* (. c c o) => (c c o .) */
CHECK( field[f + dir] == color );
CHECK( field[f + 2*dir] == color );
CHECK( field[f + 3*dir] == opponent );
field[f + 2*dir] = opponent;
field[f + 3*dir] = free;
break;
case Move::left2:
dir2 = direction[m.direction-1];
CHECK( field[f + dir] == free );
CHECK( field[f + dir2] == color );
CHECK( field[f + dir+dir2] == color );
field[f+dir2] = free;
field[f+=dir] = color;
field[f+dir2] = free;
break;
case Move::right2:
dir2 = direction[m.direction+1];
CHECK( field[f + dir] == free );
CHECK( field[f + dir2] == color );
CHECK( field[f + dir+dir2] == color );
field[f+dir2] = free;
field[f+=dir] = color;
field[f+dir2] = free;
break;
case Move::move1: /* (. c) => (c .) */
CHECK( field[f + dir] == color );
field[f + dir] = free;
break;
default:
break;
}
if (--storedLast < 0) storedLast = MvsStored-1;
CHECK( isConsistent() );
return true;
}
int Board::movesStored()
{
int c = storedLast - storedFirst;
if (c<0) c+= MvsStored;
return c;
}
/** countFrom
*
* Used for board evaluation to count allowed move types and
* connectiveness. VERY similar to move generation.
*
* Returns number of found moves
*/
void Board::countFrom(int startField, int color,
MoveTypeCounter& TCounter,
InARowCounter& CCounter)
{
int d, dir, c, actField, c2;
bool left, right;
/* 6 directions */
for(d=1;d<7;d++) {
dir = direction[d];
/* 2nd field */
c = field[actField = startField+dir];
if (c == free) {
TCounter.incr( Move::move1 );
continue;
}
if (c != color)
continue;
/* 2nd == color */
CCounter.incr( InARowCounter::inARow2 );
/* left side move 2 */
left = (field[startField+direction[d-1]] == free);
if (left) {
left = (field[actField+direction[d-1]] == free);
if (left)
TCounter.incr( Move::left2 );
}
/* right side move 2 */
right = (field[startField+direction[d+1]] == free);
if (right) {
right = (field[actField+direction[d+1]] == free);
if (right)
TCounter.incr( Move::right2 );
}
/* 3rd field */
c = field[actField += dir];
if (c == free) {
/* (c c .) */
TCounter.incr( Move::move2 );
continue;
}
else if (c == out) {
continue;
}
else if (c != color) {
/* 4th field */
c = field[actField += dir];
if (c == free) {
/* (c c o .) */
TCounter.incr( Move::push1with2 );
}
else if (c == out) {
/* (c c o |) */
TCounter.incr( Move::out1with2 );
}
continue;
}
/* 3nd == color */
CCounter.incr( InARowCounter::inARow3 );
/* left side move 3 */
if (left) {
left = (field[actField+direction[d-1]] == free);
if (left)
TCounter.incr( Move::left3 );
}
/* right side move 3 */
if (right) {
right = (field[actField+direction[d+1]] == free);
if (right)
TCounter.incr( Move::right3 );
}
/* 4th field */
c = field[actField += dir];
if (c == free) {
/* (c c c .) */
TCounter.incr( Move::move3 );
continue;
}
else if (c == out) {
continue;
}
else if (c != color) {
/* 4nd == opponent */
/* 5. field */
c2 = field[actField += dir];
if (c2 == free) {
/* (c c c o .) */
TCounter.incr( Move::push1with3 );
continue;
}
else if (c2 == out) {
/* (c c c o |) */
TCounter.incr( Move::out1with3 );
continue;
}
if (c2 != c)
continue;
/* 5nd == opponent */
/* 6. field */
c2 = field[actField += dir];
if (c2 == free) {
/* (c c c o o .) */
TCounter.incr( Move::push2 );
}
else if (c2 == out) {
/* (c c c o o |) */
TCounter.incr( Move::out2 );
}
continue;
}
/* 4nd == color */
CCounter.incr( InARowCounter::inARow4 );
/* 5th field */
c = field[actField += dir];
if (c != color)
continue;
/* 4nd == color */
CCounter.incr( InARowCounter::inARow5 );
}
}
/** indent
*
* Internal: for debugging output only
*/
void indent(int d)
{
char tmp[]=" ";
tmp[d*3] = 0;
qDebug("> %s",tmp);
}
/** validState
*
* Check for a valid board position to play from:
* (1) Number of pieces for each color has to be between 9 and 14
* (2) There must be a move possible for actual color
*/
int Board::validState()
{
MoveTypeCounter tc;
InARowCounter cc;
int c1 = 0, c2 = 0;
int i,j, moveCount, res;
for(i=0;i<AllFields;i++) {
j=field[i];
if (j == color1) c1++;
if (j == color2) c2++;
if (j == color)
countFrom( i, color, tc, cc);
}
color1Count = c1;
color2Count = c2;
moveCount = tc.sum();
if (c1==0 && c2==0)
res = empty;
else if (c1>8 && c1<15 && c2>8 && c2<15 && moveCount>0 )
res = valid;
else
res = invalid;
#ifdef MYTRACE
if (spyLevel>2) {
indent(spyDepth);
qDebug("Valid: %s (Color1 %d, Color2 %d, moveCount of %d: %d)\n",
(res == empty) ? "empty" : (res==valid) ? "valid":"invalid",
c1,c2,color,moveCount);
}
#endif
return res;
}
/* Calculate a evaluation for actual position
*
* A higher value means a better position for opponent
* NB: This means a higher value for better position of
* 'color before last move'
*/
int Board::calcEvaluation()
{
MoveTypeCounter tcColor, tcOpponent;
InARowCounter ccColor, ccOpponent;
int f,i,j;
// if not yet set, use default scheme
if (!_evalScheme) setEvalScheme();
/* different evaluation types */
int fieldValueSum=0, stoneValueSum=0;
int moveValueSum=0, inARowValueSum=0;
int valueSum;
/* First check simple winner condition */
if (color1Count <9)
valueSum = (color==color1) ? 16000 : -16000;
else if (color2Count <9)
valueSum = (color==color2) ? 16000 : -16000;
else {
/* Calculate fieldValueSum and count move types and connectivity */
for(i=0;i<RealFields;i++) {
j=field[f=order[i]];
if (j == free) continue;
if (j == color) {
countFrom( f, j, tcColor, ccColor );
fieldValueSum -= fieldValue[i];
}
else {
countFrom( f, j, tcOpponent, ccOpponent );
fieldValueSum += fieldValue[i];
}
}
/* If color can't do any moves, opponent wins... */
if (tcColor.sum() == 0)
valueSum = 16000;
else {
for(int t=0;t < Move::typeCount;t++)
moveValueSum += _evalScheme->moveValue(t) *
(tcOpponent.get(t) - tcColor.get(t));
for(int i=0;i < InARowCounter::inARowCount;i++)
inARowValueSum += _evalScheme->inARowValue(i) *
(ccOpponent.get(i) - ccColor.get(i));
if (color == color2)
stoneValueSum = _evalScheme->stoneValue(14 - color1Count) -
_evalScheme->stoneValue(14 - color2Count);
else
stoneValueSum = _evalScheme->stoneValue(14 - color2Count) -
_evalScheme->stoneValue(14 - color1Count);
valueSum = fieldValueSum + moveValueSum +
inARowValueSum + stoneValueSum;
}
}
#ifdef MYTRACE
if (spyLevel>2) {
indent(spyDepth);
qDebug("Eval %d (field %d, move %d, inARow %d, stone %d)\n",
valueSum, fieldValueSum, moveValueSum,
inARowValueSum, stoneValueSum );
}
#endif
return valueSum;
}
bool Board::isConsistent()
{
int c1 = 0, c2 = 0;
int i,j;
for(i=0;i<RealFields;i++) {
j=field[order[i]];
if (j == color1) c1++;
if (j == color2) c2++;
}
return (color1Count == c1 && color2Count == c2);
}
void Board::changeEvaluation()
{
int i,tmp;
/* innermost ring */
tmp=fieldValue[1];
for(i=1;i<6;i++)
fieldValue[i] = fieldValue[i+1];
fieldValue[6] = tmp;
tmp=fieldValue[7];
for(i=7;i<18;i++)
fieldValue[i] = fieldValue[i+1];
fieldValue[18] = tmp;
tmp=fieldValue[19];
for(i=19;i<36;i++)
fieldValue[i] = fieldValue[i+1];
fieldValue[36] = tmp;
/* the outermost ring */
tmp=fieldValue[37];
for(i=37;i<60;i++)
fieldValue[i] = fieldValue[i+1];
fieldValue[60] = tmp;
}
/*
void Board::showHist()
{
Move m1, m2;
qDebug("After playing ");
(m1=lastMove()).print();
print();
qDebug("TakeBack "); m1.print();
takeBack(); print();
qDebug("TakeBack ");
(m2=lastMove()).print();
takeBack(); print();
qDebug("Play "); m2.print();
playMove(m2); print();
qDebug("Play "); m1.print();
playMove(m1); print();
getchar();
}
*/
/*
* We always try the maximize the board value
*/
int Board::search(int depth, int alpha, int beta)
{
int actValue= -14999+depth, value;
Move m;
MoveList list;
bool depthPhase, doDepthSearch;
searchCalled++;
/* We make a depth search for the following move types... */
int maxType = (depth < maxDepth-1) ? Move::maxMoveType() :
(depth < maxDepth) ? Move::maxPushType() :
Move::maxOutType();
generateMoves(list);
#ifdef MYTRACE
int oldRatedPositions;
int oldWonPositions;
int oldSearchCalled;
int oldMoveCount;
int oldNormalCount;
int oldPushCount;
int oldOutCount;
int oldCutoffCount;