All the pieces evacuate the board onto the rainbow road, then start a race.

Luigi gets nailed by a blue shell.

Intercontinental ballistic missile (anti-tank missile will work as substitute) to F9, check

Time reverses, from now on every iteration starts undoing every move up until now while also still continuing with new moves from top comments.

Eat it eat it eat it

Let’s bring it back around.

A giant pawn crushes everything on the board.

without nyancat to control it, the rainbow becomes feral and, threatened by the rainbow road and mistaking it for an adversary, begins attacking it, causing both to collapse into photonegatives of their usual colours.

A bigger pink and red chess board is placed under the current one in a 45deg angle with all the starting pieces in place

deleted by creator

Mario sees the mushroom cloud from the explosion and abandons his cart to jump toward it.

The heat from the explosion halts the ice age for 5 turns. The existing glaciers melt and form an ocean, where an injured Cthulthu retreats to take a nap. The ocean will refreeze once the ice age comes back, unless something else happens to prevent it.