do not crash on large boards, fall back to manual play

src/shared/gameplay/boardgame.ts

@@ -21,8 +21,14 @@ export const getTargetGameState = (state: BoardgameState, rules: GameRules) => {
     return state;
   }
 
-  const solutions = getAllSolutions(state.rows, state.columns, rules);
-  const nextMove = createOpponent(solutions).getNextMove(state.board, state.currentPlayer);
-  const newState = state.withMove(nextMove.row, nextMove.column);
-  return newState;
+  try {
+    const solutions = getAllSolutions(state.rows, state.columns, rules);
+    const nextMove = createOpponent(solutions).getNextMove(state.board, state.currentPlayer);
+    const newState = state.withMove(nextMove.row, nextMove.column);
+    return newState;
+  } catch (err) {
+    // Fall back to non-auto play
+    console.error(err);
+    return state;
+  }
 };