assertTrue(game.getPhase() instanceof TilePhase);
String s1 = snapshotGame(game);
Phase phase = game.getPhase();
phase.placeTile(Rotation.R90, new Position(-2, 0));
assertEquals(1, game.events.size());
TileEvent ev = (TileEvent) game.events.get(0);
ev.undo(game);
game.setPhase(phase);