From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Mon, 11 Oct 2010 19:52:10 +0000 (+0200)
Subject: Make mate test handle Shogi
X-Git-Url: http://winboard.nl/cgi-bin?p=capablanca.git;a=commitdiff_plain;h=aabaa926fde2f7cd599776bd6ae0f6868eb892da

Make mate test handle Shogi

If we must rely on interposing drop for resolving the check, now use
legal_andcheck_move() to test if the drop is legal.
---

diff --git a/lasker-2.2.3/src/movecheck.c b/lasker-2.2.3/src/movecheck.c
index 30ada65..468a8a3 100644
--- a/lasker-2.2.3/src/movecheck.c
+++ b/lasker-2.2.3/src/movecheck.c
@@ -1767,10 +1767,8 @@ int has_legal_move(struct game_state_t * gs)
 	  if(game_globals.garray[gs->gameNum].link < 0) {
 		// we have no partner, so we must have something to drop now
 		for(i=QUEEN; i>=PAWN; i--)
-			if(gs->holding[gs->onMove==WHITE ? 0 : 1][i-1]) break;
-		if(i > PAWN) return 1; // we have a non-Pawn to drop
-		// We have a Pawn, but check if it legal to drop it
-		if(i == PAWN && r != 0 && r != gs->ranks-1) return 1; // [HGM] todo: for Shogi there are extra conditions on Pawn drops!
+			if (legal_andcheck_move(gs, ALG_DROP, i, f, r)) return 1;
+		return 0;
 	  }
 	  return 1;
 	}