diff --git a/src/coolrl_lost_cities/games/classic/deep_cfr/encoding.pyx b/src/coolrl_lost_cities/games/classic/deep_cfr/encoding.pyx
index 9a285fa..c591882 100644
--- a/src/coolrl_lost_cities/games/classic/deep_cfr/encoding.pyx
+++ b/src/coolrl_lost_cities/games/classic/deep_cfr/encoding.pyx
@@ -1,11 +1,23 @@
 # cython: language_level=3, boundscheck=False, wraparound=False, cdivision=True, initializedcheck=False
-"""Minimal deterministic information-state encoding for Deep CFR scaffolding."""
+"""Deterministic information-state encoding for Deep CFR."""
 
 from coolrl_lost_cities.games.classic.game cimport GameState
 
 
 cdef int input_dim_c(GameState state) noexcept:
-    return 5 + state.hand_size * 3 + 2 * state.hand_size + 1 + state.n_colors
+    cdef int action_size = 2 * state.hand_size + 1 + state.n_colors
+    cdef int card_type_size = state.n_colors * (state.n_ranks + 1)
+    return (
+        5
+        + state.hand_size * 3
+        + 2 * state.n_colors * 4
+        + state.n_colors * 4
+        + card_type_size
+        + 3
+        + 1
+        + state.n_colors + 1
+        + action_size
+    )
 
 
 cdef int encode_info_state_c(GameState state, int player, float* out) except -1:
@@ -15,6 +27,16 @@ cdef int encode_info_state_c(GameState state, int player, float* out) except -1:
     cdef int color
     cdef int rank
     cdef int action_size = 2 * state.hand_size + 1 + state.n_colors
+    cdef int card_type_size = state.n_colors * (state.n_ranks + 1)
+    cdef int public_base
+    cdef int player_index
+    cdef int length
+    cdef int top_card
+    cdef int card_index
+    cdef int max_expedition_len = state.n_ranks + state.n_handshakes
+    cdef float score_denom = <float>(
+        max(1, state.bonus_amount + (state.n_ranks * (state.n_ranks + 1)) * (state.n_handshakes + 1))
+    )
     cdef int action_count
     cdef int actions[64]
     cdef int i
@@ -49,6 +71,61 @@ cdef int encode_info_state_c(GameState state, int player, float* out) except -1:
             out[idx + 2] = 0.0
         idx += 3
 
+    for player_index in range(2):
+        for color in range(state.n_colors):
+            card_index = state._expedition_len_index(player_index, color)
+            length = state.expedition_lens[card_index]
+            out[idx] = <float>length / <float>max_expedition_len
+            out[idx + 1] = <float>state.last_numeric_ranks[card_index] / <float>state.n_ranks
+            out[idx + 2] = <float>state.handshake_counts[card_index] / <float>max(1, state.n_handshakes)
+            out[idx + 3] = <float>state.expedition_scores[card_index] / score_denom
+            idx += 4
+
+    for color in range(state.n_colors):
+        length = state.discard_lens[color]
+        out[idx] = <float>length / <float>max_expedition_len
+        if length > 0:
+            top_card = state.discard_cards[state._discard_index(color, length - 1)]
+            out[idx + 1] = 1.0
+            out[idx + 2] = <float>(state._card_color(top_card) + 1) / <float>state.n_colors
+            out[idx + 3] = <float>state._card_rank(top_card) / <float>state.n_ranks
+        else:
+            out[idx + 1] = 0.0
+            out[idx + 2] = 0.0
+            out[idx + 3] = 0.0
+        idx += 4
+
+    public_base = idx
+    for i in range(card_type_size):
+        out[public_base + i] = 0.0
+    for player_index in range(2):
+        for color in range(state.n_colors):
+            card_index = state._expedition_len_index(player_index, color)
+            for i in range(state.expedition_lens[card_index]):
+                card = state.expedition_cards[state._expedition_index(player_index, color, i)]
+                out[public_base + state._card_color(card) * (state.n_ranks + 1) + state._card_rank(card)] += 1.0
+    for color in range(state.n_colors):
+        for i in range(state.discard_lens[color]):
+            card = state.discard_cards[state._discard_index(color, i)]
+            out[public_base + state._card_color(card) * (state.n_ranks + 1) + state._card_rank(card)] += 1.0
+    idx += card_type_size
+
+    out[idx] = <float>state.total_scores[player] / score_denom
+    out[idx + 1] = <float>state.total_scores[1 - player] / score_denom
+    out[idx + 2] = <float>(state.total_scores[player] - state.total_scores[1 - player]) / score_denom
+    idx += 3
+
+    out[idx] = <float>state.turn_count / <float>max(1, state.total_cards * 2)
+    idx += 1
+
+    for i in range(state.n_colors + 1):
+        out[idx + i] = 0.0
+    if state.pending_discarded_color < 0:
+        out[idx + state.n_colors] = 1.0
+    else:
+        out[idx + state.pending_discarded_color] = 1.0
+    idx += state.n_colors + 1
+
     for i in range(action_size):
         out[idx + i] = 0.0
     action_count = state._unified_legal_actions_c(actions)
diff --git a/tests/games/classic/test_deep_cfr_foundation.py b/tests/games/classic/test_deep_cfr_foundation.py
index d4a8df3..baed768 100644
--- a/tests/games/classic/test_deep_cfr_foundation.py
+++ b/tests/games/classic/test_deep_cfr_foundation.py
@@ -92,6 +92,7 @@ def test_encode_info_state_is_deterministic_and_matches_legal_mask_tail() -> Non
 
     assert encoded.dtype == np.float32
     assert encoded.shape == (input_dim(state),)
+    assert input_dim(state) > 5 + state.config.hand_size * 3 + len(legal_mask)
     np.testing.assert_array_equal(encoded, encoded_again)
     np.testing.assert_array_equal(encoded[-len(legal_mask) :], legal_mask)