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| 20 | 20 | ||
| 21 | #include <algorithm> |
21 | #include <algorithm> |
| 22 | #include <cassert> |
22 | #include <cassert> |
| 23 | 23 | ||
| 24 | #include "bitboard.h" |
24 | #include "bitboard.h" |
| 25 | #include "bitcount.h" |
- | |
| 26 | #include "endgame.h" |
25 | #include "endgame.h" |
| 27 | #include "movegen.h" |
26 | #include "movegen.h" |
| 28 | 27 | ||
| 29 | using std::string; |
28 | using std::string; |
| 30 | 29 | ||
| Line 98... | Line 97... | ||
| 98 | std::transform(sides[c].begin(), sides[c].end(), sides[c].begin(), tolower); |
97 | std::transform(sides[c].begin(), sides[c].end(), sides[c].begin(), tolower); |
| 99 | 98 | ||
| 100 | string fen = sides[0] + char(8 - sides[0].length() + '0') + "/8/8/8/8/8/8/" |
99 | string fen = sides[0] + char(8 - sides[0].length() + '0') + "/8/8/8/8/8/8/" |
| 101 | + sides[1] + char(8 - sides[1].length() + '0') + " w - - 0 10"; |
100 | + sides[1] + char(8 - sides[1].length() + '0') + " w - - 0 10"; |
| 102 | 101 | ||
| - | 102 | StateInfo st; |
|
| 103 | return Position(fen, |
103 | return Position().set(fen, false, &st, nullptr).material_key(); |
| 104 | } |
104 | } |
| 105 | 105 | ||
| 106 | } // namespace |
106 | } // namespace |
| 107 | 107 | ||
| 108 | 108 | ||
| Line 257... | Line 257... | ||
| 257 | && rank_of(wksq) >= RANK_4 |
257 | && rank_of(wksq) >= RANK_4 |
| 258 | && distance(wksq, psq) > 2 + (pos.side_to_move() == strongSide)) |
258 | && distance(wksq, psq) > 2 + (pos.side_to_move() == strongSide)) |
| 259 | result = Value(80) - 8 * distance(wksq, psq); |
259 | result = Value(80) - 8 * distance(wksq, psq); |
| 260 | 260 | ||
| 261 | else |
261 | else |
| 262 | result = Value(200) - 8 * ( distance(wksq, psq + |
262 | result = Value(200) - 8 * ( distance(wksq, psq + SOUTH) |
| 263 | - distance(bksq, psq + |
263 | - distance(bksq, psq + SOUTH) |
| 264 | - distance(psq, queeningSq)); |
264 | - distance(psq, queeningSq)); |
| 265 | 265 | ||
| 266 | return strongSide == pos.side_to_move() ? result : -result; |
266 | return strongSide == pos.side_to_move() ? result : -result; |
| 267 | } |
267 | } |
| 268 | 268 | ||
| Line 494... | Line 494... | ||
| 494 | return SCALE_FACTOR_DRAW; |
494 | return SCALE_FACTOR_DRAW; |
| 495 | 495 | ||
| 496 | // If the defending king blocks the pawn and the attacking king is too far |
496 | // If the defending king blocks the pawn and the attacking king is too far |
| 497 | // away, it's a draw. |
497 | // away, it's a draw. |
| 498 | if ( r <= RANK_5 |
498 | if ( r <= RANK_5 |
| 499 | && bksq == wpsq + |
499 | && bksq == wpsq + NORTH |
| 500 | && distance(wksq, wpsq) - tempo >= 2 |
500 | && distance(wksq, wpsq) - tempo >= 2 |
| 501 | && distance(wksq, brsq) - tempo >= 2) |
501 | && distance(wksq, brsq) - tempo >= 2) |
| 502 | return SCALE_FACTOR_DRAW; |
502 | return SCALE_FACTOR_DRAW; |
| 503 | 503 | ||
| 504 | // Pawn on the 7th rank supported by the rook from behind usually wins if the |
504 | // Pawn on the 7th rank supported by the rook from behind usually wins if the |
| Line 515... | Line 515... | ||
| 515 | // Similar to the above, but with the pawn further back |
515 | // Similar to the above, but with the pawn further back |
| 516 | if ( f != FILE_A |
516 | if ( f != FILE_A |
| 517 | && file_of(wrsq) == f |
517 | && file_of(wrsq) == f |
| 518 | && wrsq < wpsq |
518 | && wrsq < wpsq |
| 519 | && (distance(wksq, queeningSq) < distance(bksq, queeningSq) - 2 + tempo) |
519 | && (distance(wksq, queeningSq) < distance(bksq, queeningSq) - 2 + tempo) |
| 520 | && (distance(wksq, wpsq + |
520 | && (distance(wksq, wpsq + NORTH) < distance(bksq, wpsq + NORTH) - 2 + tempo) |
| 521 | && ( distance(bksq, wrsq) + tempo >= 3 |
521 | && ( distance(bksq, wrsq) + tempo >= 3 |
| 522 | || ( distance(wksq, queeningSq) < distance(bksq, wrsq) + tempo |
522 | || ( distance(wksq, queeningSq) < distance(bksq, wrsq) + tempo |
| 523 | && (distance(wksq, wpsq + |
523 | && (distance(wksq, wpsq + NORTH) < distance(bksq, wrsq) + tempo)))) |
| 524 | return ScaleFactor( SCALE_FACTOR_MAX |
524 | return ScaleFactor( SCALE_FACTOR_MAX |
| 525 | - 8 * distance(wpsq, queeningSq) |
525 | - 8 * distance(wpsq, queeningSq) |
| 526 | - 2 * distance(wksq, queeningSq)); |
526 | - 2 * distance(wksq, queeningSq)); |
| 527 | 527 | ||
| 528 | // If the pawn is not far advanced and the defending king is somewhere in |
528 | // If the pawn is not far advanced and the defending king is somewhere in |