diff --git a/html-src/rules/doubletrigon.html b/html-src/rules/doubletrigon.html
new file mode 100644
index 00000000..b5e6e935
--- /dev/null
+++ b/html-src/rules/doubletrigon.html
@@ -0,0 +1,12 @@
+<h1>Double Trigon</h1>
+<p>
+Klondike type. 2 decks. Unlimited redeals.
+
+<h3>Object</h3>
+<p>
+Move all cards to the foundations.
+
+<h3>Quick Description</h3>
+<p>
+Like <a href="trigon.html">Trigon</a>,
+but with two decks and nine playing piles.
diff --git a/html-src/rules/trigon.html b/html-src/rules/trigon.html
new file mode 100644
index 00000000..90e90156
--- /dev/null
+++ b/html-src/rules/trigon.html
@@ -0,0 +1,12 @@
+<h1>Trigon</h1>
+<p>
+Klondike type. 1 deck. Unlimited redeals.
+
+<h3>Object</h3>
+<p>
+Move all cards to the foundations.
+
+<h3>Quick Description</h3>
+<p>
+Like <a href="klondike.html">Klondike</a>,
+but piles build down by suit.
diff --git a/pysollib/gamedb.py b/pysollib/gamedb.py
index 230c80d0..71f1b5d8 100644
--- a/pysollib/gamedb.py
+++ b/pysollib/gamedb.py
@@ -423,7 +423,7 @@ class GI:
         ('fc-2.8',   (343001,)),
         ('fc-2.12',   tuple(range(774, 811)) + (16681,) +
          tuple(range(22217, 22219))),
-        ('fc-2.14', tuple(range(811, 821)))
+        ('fc-2.14', tuple(range(811, 823)))
     )
 
     # deprecated - the correct way is to or a GI.GT_XXX flag
diff --git a/pysollib/games/harp.py b/pysollib/games/harp.py
index dfa9b013..aba04b79 100644
--- a/pysollib/games/harp.py
+++ b/pysollib/games/harp.py
@@ -33,6 +33,7 @@ from pysollib.stack import \
         AC_RowStack, \
         BO_RowStack, \
         KingAC_RowStack, \
+        KingSS_RowStack, \
         SS_FoundationStack, \
         SS_RowStack, \
         Spider_SS_RowStack, \
@@ -94,6 +95,14 @@ class DoubleKlondikeByThrees(DoubleKlondike):
         DoubleKlondike.createGame(self, num_deal=3)
 
 
+# ************************************************************************
+# * Double Trigon
+# ************************************************************************
+
+class DoubleTrigon(DoubleKlondike):
+    RowStack_Class = KingSS_RowStack
+
+
 # ************************************************************************
 # * Gargantua (Double Klondike with one redeal)
 # * Pantagruel
@@ -362,3 +371,5 @@ registerGame(GameInfo(678, ThievesOfEgypt, "Thieves of Egypt",
 registerGame(GameInfo(689, Brush, "Brush",
                       GI.GT_2DECK_TYPE | GI.GT_ORIGINAL, 2, 0,
                       GI.SL_MOSTLY_SKILL))
+registerGame(GameInfo(822, DoubleTrigon, "Double Trigon",
+                      GI.GT_KLONDIKE, 2, -1, GI.SL_BALANCED))
diff --git a/pysollib/games/klondike.py b/pysollib/games/klondike.py
index 76775478..ba35ef74 100644
--- a/pysollib/games/klondike.py
+++ b/pysollib/games/klondike.py
@@ -38,6 +38,7 @@ from pysollib.stack import \
         DealRowTalonStack, \
         InitialDealTalonStack, \
         KingAC_RowStack, \
+        KingSS_RowStack, \
         OpenStack, \
         OpenTalonStack, \
         RK_FoundationStack, \
@@ -148,6 +149,14 @@ class KlondikeByThrees(Klondike):
         Klondike.createGame(self, num_deal=3)
 
 
+# ************************************************************************
+# * Trigon
+# ************************************************************************
+
+class Trigon(Klondike):
+    RowStack_Class = KingSS_RowStack
+
+
 # ************************************************************************
 # * Thumb and Pouch
 # * Chinaman
@@ -1527,3 +1536,5 @@ registerGame(GameInfo(669, Scarp, "Scarp",
                       GI.GT_GYPSY | GI.GT_ORIGINAL, 3, 0, GI.SL_MOSTLY_SKILL))
 registerGame(GameInfo(726, EightSages, "Eight Sages",
                       GI.GT_KLONDIKE, 2, 1, GI.SL_MOSTLY_LUCK))
+registerGame(GameInfo(821, Trigon, "Trigon",
+                      GI.GT_KLONDIKE, 1, -1, GI.SL_BALANCED))