Let's Progressive-Chess-With-A-Twist Again

STOCKFISH12 gets a chance to avenge its loss in game one.
Komodo11.01 - Stockfish12
Progressive Chess With A Twist.
1.e4 e5
2... Nc6
3.Nc3
4.Bc4
5.Nf3 Bc5
6... Nf6
A position often seen on the board in a game between relative novices.
7... d6
8... Bg4
9.Bb5!?
10.Bxc6+?
Giving check ends a player's turn, so now Stockfish12 gets to play six consecutive moves ... and deliver mate.
10...bxc6

Black has a mating combination

*****

*****

*****

*****

*****

11... d5
Even quicker, if you know you are playing progressive chess, is 11...Qd7, 12...Qf5, 13...Qxf3 and 14...Qxf2#.

12... dxe4
13... exf3
14... fxg2
15... gxh1=Q#

Progressive Chess With A Twist

PROGRESSIVE chess is a well-known variant in which players take turns to have one more move than the previous player.

In other words, player A makes a move, player B makes two moves, player A makes three moves and so on.

As is easily imagined, a game is usually over fairly quickly.

But suppose neither player knew they would get consecutive moves? How would that change the game (hopefully with comic effect)?

Such an experiment is not possible with humans, but with engines it is a different matter.

Stockfish12 - Komodo11.01

Progressive Chess With A Twist

1.d4 d5

2...c5

3.e3

4.c4

5.cxd5 Nf6

6...Nxd5

7...cxd4

8...e5

Position after 8...e5

Black has a winning advantage - or would have if this were normal chess. But now White gets five consecutive moves

9.exd4

10.dxe5

11.Nf3

12.Nc3

13.Bb5+!?

White is a pawn up and with an edge in development, but now Black gets six moves.

13...Nc6

14...Nxc3!

Setting up checkmate..

15...Qxd1#

What I find interesting about this is that much of the game seemed like normal chess, at least if you take each move in isolation.