Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/fen.c
src/chess/fen.c
- changeset 223
- e2519b3dd5e7
- parent 221
- 338795f5837b
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| 222:6388f9340a09 | 223:e2519b3dd5e7 |
|---|---|
| 88 | 88 |
| 89 return i; | 89 return i; |
| 90 } | 90 } |
| 91 | 91 |
| 92 static size_t fen_enpassant(char *str, const GameState *gamestate) { | 92 static size_t fen_enpassant(char *str, const GameState *gamestate) { |
| 93 | 93 /* We use the old specification where the en passant threat is always |
| 94 * noted, regardless of a possible capture. This specification is also | |
| 95 * used by chess.com, for example. There is a modernized specification, | |
| 96 * which states that the threat is only to be noted when there is a valid | |
| 97 * capturing move for the active color (lichess.org uses this version of | |
| 98 * the specification). But this is unnecessarily complicated and as long | |
| 99 * as the old spec is still valid and commonly used, we implement the easy | |
| 100 * version. | |
| 101 */ | |
| 94 str[0] = '-'; | 102 str[0] = '-'; |
| 95 | 103 |
| 96 for (int file = 0 ; file < 8 ; file++) { | 104 for (int file = 0 ; file < 8 ; file++) { |
| 97 if (enpassant_threat_exists(gamestate, file, 3)) { | 105 if (enpassant_threat_exists(gamestate, file, 3)) { |
| 98 str[0] = filechr(file); | 106 str[0] = filechr(file); |
