diff --git a/src/chess.h b/src/chess.h
index b5a028d..046ec17 100644
--- a/src/chess.h
+++ b/src/chess.h
@@ -18,9 +18,35 @@
 #define BOARD_HORIZONTAL 8
 #define BOARD_VERTICAL 8
 
-// just a simple type abstraction
+// type abstractions
 typedef int board_t[BOARD_HORIZONTAL][BOARD_VERTICAL];
 
+typedef enum {
+    NONE,
+    PAWN,
+    ROOK,
+    KNIGHT,
+    BISHOP,
+    QUEEN,
+    KING
+} piece_e;
+
+typedef struct {
+    int x;
+    int y;
+} pos_t;
+
+typedef enum { WHITE, BLACK } player_e;
+
+typedef struct {
+    // what
+    // where from
+    // where to
+    piece_e piece;
+    pos_t from;
+    pos_t to;
+} move_t;
+
 // the default arrangment of pieces on the board
 #define BOARD_DEFAULT_CONFIG \
 {\
@@ -33,6 +59,11 @@ typedef int board_t[BOARD_HORIZONTAL][BOARD_VERTICAL];
     {2,3,4,5,6,4,3,2}\
 }
 
+typedef enum {
+    CHECKMATE,
+    STALEMATE
+} end_condition_e;
+
 // initializes the board with the default configuration of pieces
 bool init_board(board_t *board);
 
diff --git a/src/main.c b/src/main.c
index c6424b5..cccb8e4 100644
--- a/src/main.c
+++ b/src/main.c
@@ -16,14 +16,32 @@
 */
 
 int main() {
+    // variable defs
     board_t board;
+    move_t move;
+    player_e player;
+    end_condition_e end_condition;
     bool running = true;
     
+    // algo begin
+
     init_board(&board);
 
     while (running) {
         
+        select_player(&player);
+        
+        get_move(&move);
+
+        perform_move(player, move);
+
+        end_condition = check_edge_cases(board);
+        if (end_condition == CHECKMATE || end_condition == STALEMATE) {
+            running = false;
+        }
     }
 
+    announce_results(player);
+
     return EXIT_SUCCESS;
 }
\ No newline at end of file