diff --git a/deck_analyzer.py b/deck_analyzer.py
index 1c00636..3c2763c 100644
--- a/deck_analyzer.py
+++ b/deck_analyzer.py
@@ -12,7 +12,26 @@ deck_str = "15xaivliynfkrhpdwtprfaskwvfhnpcmjdksmlabcquqoegxugub"
 deck = decompress_deck(deck_str)
 
 
-def analyze(deck: List[DeckCard], num_players):
+class InfeasibilityType(Enum):
+    OutOfPace = 0           # idx denotes index of last card drawn before being forced to reduce pace, value denotes how bad pace is
+    OutOfHandSize = 1       # idx denotes index of last card drawn before being forced to discard a crit
+
+
+class InfeasibilityReason():
+    def __init__(self, infeasibility_type, idx, value=None):
+        self.type = infeasibility_type
+        self.index = idx
+        self.value = value
+
+    def __repr__(self):
+        match self.type:
+            case InfeasibilityType.OutOfPace:
+                return "Deck runs out of pace ({}) after drawing card {}".format(self.value, self.index)
+            case InfeasibilityType.OutOfHandSize:
+                return "Deck runs out of hand size after drawing card {}".format(self.index)
+
+
+def analyze(deck: List[DeckCard], num_players) -> InfeasibilityReason | None:
     num_suits = max(map(lambda c: c.suitIndex, deck)) + 1
     hand_size = STANDARD_HAND_SIZE[num_players]
 
@@ -22,8 +41,10 @@ def analyze(deck: List[DeckCard], num_players):
 
     stacks = [0] * num_suits
     stored_cards = set()
+    stored_crits = set()
     min_forced_pace = 100
-    for (i, card) in enumerate(deck):
+    worst_index = 0
+    for (i, card) in enumerate(deck[:-2]):
         if card.rank == stacks[card.suitIndex] + 1:
             # card is playable
             stacks[card.suitIndex] += 1
@@ -33,34 +54,54 @@ def analyze(deck: List[DeckCard], num_players):
                 if check_card in stored_cards:
                     stacks[card.suitIndex] += 1
                     stored_cards.remove(check_card)
+                    if check_card in stored_crits:
+                        stored_crits.remove(check_card)
                 else:
                     break
         elif card.rank <= stacks[card.suitIndex]:
             pass # card is trash
         elif card.rank > stacks[card.suitIndex] + 1:
             # need to store card
+            if card in stored_cards or card.rank == 5:
+                stored_crits.add(card)
             stored_cards.add(card)
+        
+        ## check for out of handsize:
+        if len(stored_crits) == num_players * hand_size:
+            return InfeasibilityReason(InfeasibilityType.OutOfHandSize, i)
 
         # the last - 1 is there because we have to discard 'next', causing a further draw
         max_remaining_plays = (len(deck) - i - 1) + num_players - 1
 
         needed_plays = 5 * num_suits - sum(stacks)
         missing =  max_remaining_plays - needed_plays
-        min_forced_pace = min(min_forced_pace, missing)
-
-    return min_forced_pace
+        if missing < min_forced_pace:
+#            print("update to {}: {}".format(i, missing))
+            min_forced_pace = missing
+            worst_index = i
+    if min_forced_pace < 0: 
+        return InfeasibilityReason(InfeasibilityType.OutOfPace, worst_index, min_forced_pace)
+    else:
+        return None
 
 
 def run_on_database():
     cur = conn.cursor()
+    cur2 = conn.cursor()
     cur.execute("SELECT seed, num_players, deck from seeds where variant_id = 0 order by num_players desc")
-    for (seed, num_players, deck) in cur:
-        p = analyze(decompress_deck(deck), num_players)
-        if p < 0:
-            print("seed {} runs out of pace".format(seed))
+    res = cur.fetchall()
+    for (seed, num_players, deck) in res:
+        deck = decompress_deck(deck)
+        a = analyze(deck, num_players)
+        if type(a) == InfeasibilityReason:
+            if a.type == InfeasibilityType.OutOfHandSize:
+                print("Seed {} infeasible: {}\n{}".format(seed, a, deck))
+#        if p < 0:
+#            print("seed {} ({} players) runs out of pace ({}) after drawing {}: {}:\n{}".format(seed, num_players, p, i, deck[i], deck))
+#            cur.execute("UPDATE seeds SET feasible = f WHERE seed = (%s)", seed)
 
 if __name__ == "__main__":
     print(deck)
-    a = analyze(deck, 2)
+    a = analyze(deck, 4)
     print(a)
     run_on_database()