Test Your Calculation

White to play and win. Unlike what you may have expected, the black pawns are actually about to queen. 7 of them are about to queen. However, white has 3 queens. Find the only path to win this game (in fact, the only way not to lose).

EDIT: As noted by PaulG53, there are 6 pawns about to queen. My bad.

Bump.

Bump.

That looks way too difficult looks like its going to give me a headache

I think the move is 1.Qxb2

1. Qxb2 f1=Q+

What then?

I don't think Qxb2.

Also how are 7 pawns about to queen? 6 can queen on the next move. The other 2 need something to move out of the way.

1. Qxb2 f1=Q+ 2. Ke8 and I don't think anything can stop Qxc2 and mate to follow.

Qxb2   c8=Q

Qxc1+  d7xc1

Qxc1+  Kxc1

Qa1+   ....

Qb1#

Pawns move backwards?!

No one has thus far solved, but I can tell you that Qxb2 is the correct first move.

What is your move after Qxb2? I see lines like Qxb2 c1=Q Qb3+ Qc2 Qa1#

After Qxb2 I play f1=Q+.

Then I play Ke6

1. Qxb2 f1=Q+ 2. Ke6

1.Qb2 c1/Q 2.Qb3+ Qc2 3.Qa1++

1. Qb1+ is not legal

After Ke6 I defend with Qf3. Please try another soution.

Q*b2 only way to prevent mate in 1 is either (c1=Q or f1=Q+) if ....c1=Q , Qb3+ which he can block with either Qc2 or Kc1 where in both Qa1 mate in a few moves

if ....f1=Q+, Kg8 then the original plan 

both stockfish and critter say its drawn because of perpetual check by black

Could you post this with PNG, please? I'd like to give it a go.

Hey! Yes, Der-Schachspieler has the correct answer, who also undoubtably used an engine. Originally, stockfish will give a draw, but then after a while, it will revert to white wins.