diff --git a/tools/push3-evolution/evolve.sh b/tools/push3-evolution/evolve.sh
index 43241ba..4851178 100755
--- a/tools/push3-evolution/evolve.sh
+++ b/tools/push3-evolution/evolve.sh
@@ -143,7 +143,7 @@ k = int(sys.argv[1])
 entries = []
 with open(sys.argv[2]) as f:
     for line in f:
-        parts = line.split()
+        parts = line.rstrip('\n').split('\t')
         if len(parts) >= 3:
             entries.append((int(parts[0]), int(parts[1]), parts[2]))
 if not entries:
@@ -271,8 +271,8 @@ for gen in $(seq 0 $((GENERATIONS - 1))); do
     printf '{"candidate_id":"%s","fitness":%s,"mutations_applied":%d}\n' \
       "$CID" "$SCORE" "$MUTATIONS_APPLIED" >> "$JSONL_FILE"
 
-    # Record index, score, and filepath for selection (filepath avoids index→file mapping issues).
-    printf '%d %s %s\n' "$CAND_COUNT" "$SCORE" "$CAND_FILE" >> "$SCORES_FILE"
+    # Record index, score, and filepath for selection (tab-delimited so paths with spaces are safe).
+    printf '%d\t%s\t%s\n' "$CAND_COUNT" "$SCORE" "$CAND_FILE" >> "$SCORES_FILE"
 
     SCORE_VALUES="$SCORE_VALUES $SCORE"
     CAND_COUNT=$((CAND_COUNT + 1))
@@ -293,7 +293,7 @@ import sys
 entries = []
 with open(sys.argv[1]) as f:
     for line in f:
-        parts = line.split()
+        parts = line.rstrip('\n').split('\t')
         if len(parts) >= 3:
             entries.append((int(parts[1]), parts[2]))
 if not entries:
@@ -306,7 +306,7 @@ PYEOF
     GLOBAL_BEST_FITNESS="$MAX"
     GLOBAL_BEST_GEN="$gen"
     GLOBAL_BEST_CAND="$BEST_FILE_THIS_GEN"
-    log "  New global best: gen=$gen idx=$BEST_IDX_THIS_GEN fitness=$GLOBAL_BEST_FITNESS"
+    log "  New global best: gen=$gen fitness=$GLOBAL_BEST_FITNESS file=$(basename "$BEST_FILE_THIS_GEN")"
   fi
 
   # Skip next-generation creation after the final generation