Puzzle of the week #219

Level: 
5-Queen
Chess Diagram: 

[Event "Puzzle #219"][Date "2013.03.03"][Result "1-0"][SetUp "1"][FEN "1rb1r1k1/2qnbppp/p3p3/1p2P3/3B4/2N3Q1/PPP1B1PP/3R1R1K w - - 0 1"]

We have seen how correct exchanges at the right time can easily turn the game in your favour. However what do you do when there are no exchanges available at the time like in this position? I guess you need to imagine what would be preferable and create them! Your tasks:
a) Analyse the position for both sides and decide on the best plan for White
b) Verify the plan and prove its value by finding the best line you can think of

Total available points for this puzzle is 20. The answers will be published next week together with puzzle #220.

Puzzle #218 solution:
Game Keres – Pilnik, Budapest, 1950. The analysis was all over the place from so-so to very good; however the solutions proposed were not nearly as good as needed. Here is James analysis:
a) White has many advantages like he still has his two Bishops which would excel in the endgame but not so well placed, a Rook+Queen battery behind a passed, a pawn on the 7th rank which is worth as much as a Rook, the Black Bishop and Knight are not really doing anything, the immobilized Rook in front of White's passed pawn and he's up by one pawn.
b) Solution:

[Event "Puzzle #218"][Date "2013.02.26"][Result "1-0"][SetUp "1"][FEN "3r1bk1/3P1p2/p3q1pp/2p4n/P1p2P2/2P3B1/BP1Q1P1P/3R2K1 w - - 0 1"]1.f5! Qxf5 (1...gxf5 2.Bc7) 2.Bxc4 (2.Bc7?! Qg4+) 2...Nf6 3.Qf4! Qxf4 4.Bxf4 Rxd7 5.Rxd7 Nxd7 6.Bxa6 {White wins because of the passed a-pawn}

Correct solutions:
Derrick, James, Leo - 12 points
Daniel - 10 points
Richard, Alex - 7 points
Jerry - 5 points

Standings:
Daniel - 78 points
James, Derrick - 72 points
Richard - 65 points
Leo - 64 points
Justin - 43 points
Aditya - 11 points
Alex - 7 points
Jerry - 5 points

Comment: 

The art of exchanges (2)