WIP refactor

pieces.h

@@ -0,0 +1,13 @@
+
+#ifndef PIECES_H
+#define PIECES_H
+
+#include "common.h"
+
+bool move_ok(const tile_t board[BOARD_SIZE],
+             index_t      from,
+             index_t      to,
+             const int    player);
+
+
+#endif