Puzzle of the week #362

It is black to move and he decides the time has come to attack in this middle game position. Your tasks:
a) Analyse the position and explain why now is the time for attack? What could black hope for: a draw or a win?
b) Come up with the best possible line you can think of based on what black hopes for
Total available points for this puzzle is 25. The answers will be published next time together with puzzle #363.

Puzzle #361 solution:
Z. Polgar – Wagman, San Bernardino, 1987. This week's best answers are by the top players:
a) White is better because:
- Black's Bishop is pinned
- Black has double f-pawns
[Event "Puzzle #361"][Date "2019.01.27"][Result "1-0"][SetUp "1"][FEN "6k1/5p1p/p4p2/2r5/2br4/5B2/P4PPP/2R1R1K1 w - - 0 1"]1. Re4 $1 Rxe4 (1... Be2 $3 {Excellent move missed by both players and everyone else since. It is a computer move} 2. Re1 Rxe4 3. Bxe4 {equal}) 2. Bxe4 Rc8 (2... f5 3. Bd3) 3. Bd5

Correct solutions:
Aiden, Matthew - 18 points
Walter, Coby, Joey, Zhengyu, Eric - 15 points
Blake - 8 points
Lucas - 5 points
Brian, Mengbai, Glyn - 2 points

Lyvia, Eric - 10 points for puzzle #360

Riddle points:
"The answer is the Knight and more than that, the riddle refers to the Queen side Knight"
Matthew - 11 points (bonus point)
Walter, Eric, Lyvia, Brian, Aiden, Joey, Blake - 10 points
Glyn, Mengbai, Zhengyu, Coby, Lucas - 1 point

In-class puzzle 4, lesson 15
1... h3 2. Qf3 hxg2+ 3. Qxg2 Qe3 4. Qd5 Rd2
Zhengyu - 18 points
Glyn, Brian, Mengbai - 10 points

Standings:
Matthew, Zhengyu - 50 points
Aiden - 46 points
Coby - 36 points
Eric - 35 points
Blake - 33 points
Walter, Joey - 30 points
Brian - 28 points
Mengbai - 23 points
Glyn - 22 points
Lyvia - 20 points
Lucas - 9 points