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diff --git a/variants/_Flip/class.js b/variants/_Flip/class.js
new file mode 100644
index 0000000..e2e2bf5
--- /dev/null
+++ b/variants/_Flip/class.js
@@ -0,0 +1,43 @@
+import ChessRules from "/base_rules.js";
+
+export default class AbstractFlipRules extends ChessRules {
+
+  // For games without captures (replaced by flips)
+  get hasEnpassant() {
+    return false;
+  }
+  canTake() {
+    return false;
+  }
+  filterValid(moves) {
+    return moves;
+  }
+  underCheck() {
+    return false;
+  }
+
+  playOnBoard(move) {
+    super.playOnBoard(move);
+    this.flipColorOf(move.flips);
+  }
+  undoOnBoard(move) {
+    super.undoOnBoard(move);
+    this.flipColorOf(move.flips);
+  }
+
+  flipColorOf(flips) {
+    for (let xy of flips) {
+      const newColor = C.GetOppCol(this.getColor(xy.x, xy.y));
+      this.board[xy.x][xy.y] = newColor + this.board[xy.x][xy.y][1];
+    }
+  }
+
+  playVisual(move, r) {
+    super.playVisual(move, r);
+    move.flips.forEach(f => {
+      this.g_pieces[f.x][f.y].classList.toggle("white");
+      this.g_pieces[f.x][f.y].classList.toggle("black");
+    });
+  }
+
+};