diff --git a/html-src/rules/lastchance.html b/html-src/rules/lastchance.html
new file mode 100644
index 00000000..0ab51f30
--- /dev/null
+++ b/html-src/rules/lastchance.html
@@ -0,0 +1,24 @@
+<h1>Last Chance</h1>
+<p>
+Numerica type. 1 deck. No redeal.
+
+<h3>Object</h3>
+<p>
+Move all cards to the foundations.
+
+<h3>Rules</h3>
+<p>
+At the start of the game, one card is dealt face-down
+as a reserve pile.  This is the last chance card.
+<p>
+Six cards are dealt to six tableau piles.  Cards are
+dealt from the stock one at a time, and are immediately
+played to a tableau or foundation pile.  Tableau piles can
+be built regardless of suit or rank.  Empty tableau piles
+can be filled by cards from other tableau piles, but
+otherwise, cards on tableau piles can't be moved.
+<p>
+Once the stock and waste piles are empty, the last chance
+card is flipped up and can be played to a foundation pile.
+<p>
+Foundations are built up by suit, starting from ace.
diff --git a/pysollib/games/numerica.py b/pysollib/games/numerica.py
index 35db1e70..3a10b727 100644
--- a/pysollib/games/numerica.py
+++ b/pysollib/games/numerica.py
@@ -115,9 +115,9 @@ class Numerica(Game):
 
         # set window
         # (piles up to 20 cards are playable in default window size)
-        h = max(2*l.YS, 20*l.YOFFSET)
+        h = max(2.5 * l.YS, 20 * l.YOFFSET)
         max_rows = max(rows, foundations)
-        self.setSize(l.XM+(1.5+max_rows)*l.XS+l.XM, l.YM + l.YS + h)
+        self.setSize(l.XM + (1.5 + max_rows) * l.XS + l.XM, l.YM + l.YS + h)
 
         # create stacks
         x0 = l.XM + l.XS * 3 // 2