Integrate new syzygy egtb code, lose the old Nalimov code.

1 files changed, 3 insertions, 14 deletions

diff --git a/src/recogn.c b/src/recogn.c
index c8fc856..0ab9514 100644
--- a/src/recogn.c
+++ b/src/recogn.c
@@ -1318,21 +1318,10 @@ Return value:
         if (TRUE == ProbeEGTB(ctx, &iScore))
         {
             //
-            // We have an exact score from EGTB but if it's a mate in N
-            // we still have to adjust it for the present ply. 
+            // Syzygy WDL probes are win/draw/loss only -- there's no
+            // mate distance to adjust for the present ply here (see
+            // EGTB_WIN_SCORE / EGTB_LOSS_SCORE in probe.c).
             //
-            if (iScore >= +NMATE) {
-                iScore -= ctx->uPly;
-            }
-            else if (iScore <= -NMATE) {
-                iScore += ctx->uPly;
-            }
-#ifdef DEBUG
-            else 
-            {
-                ASSERT(iScore == 0); // iDrawValue[side]
-            }
-#endif
             *piScore = iScore;
             return(RECOGN_EXACT);
         }