mongo script to fix puzzle FEN full move number

bin/mongodb/puzzle-fen-turn.js

@@ -0,0 +1,27 @@
+var puzzles = db.puzzle;
+
+function fullMoveNumber(p) {
+  return Math.floor(1 + p.history.split(' ').length / 2);
+}
+
+function changeFenMoveNumber(fen, n) {
+  parts = fen.split(' ');
+  parts[parts.length - 1] = n;
+  return parts.join(' ');
+}
+
+puzzles.find({
+  "_id": {
+    "$lt": 60121
+  }
+}).forEach(function(p) {
+  var newMoveNumber = fullMoveNumber(p);
+  var newFen = changeFenMoveNumber(p.fen, newMoveNumber);
+  puzzles.update({
+    _id: p._id
+  }, {
+    $set: {
+      fen: newFen
+    }
+  });
+});