Puzzle of the week #288

Submitted by eugen on

Retrograde

Level
4-Rook
Chess Diagram
[Event "Puzzle #288"][Date "2015.12.07"][Result "1-0"][SetUp "1"][FEN "7R/7p/5P1k/4PKpP/8/8/8/8 w - g6 0 1"]
The last such puzzle for 2015 is magic! It can be as simple as "Hello!" or as impossible as walking to the Moon. White to move and mate in 2. Your tasks:
a) Find the correct solution
b) Explain your solution
Total available points for this puzzle is 20. The answers will be published next time together with puzzle #289.

Puzzle #287 solution:
Game: Chiburdanidze – Levitina, WCh 1984, game 6.
a) After 10.Bg5 ...
[Event "Puzzle #287"][Date "2015.11.25"][Result "1/2-1/2"][SetUp "1"][FEN "4r1k1/b2b1pp1/5q1p/p7/3NQ3/1NP5/PP2RPPP/7K w - - 0 24"]{Answer "c": The defensive minded continuation} 24.Qf3 {Played in the game} ({Answer "b": The aggressive continuation} 24.Qxb7?? Rxe2! {back rank weakness} 25. Nxe2 Qxf2 26. Nbd4 Bxd4 {0-1}) Rxe2 25. Qxe2 a4 26. Nd2 Bxd4 27. cxd4 Qxd4 {followed by a draw at move 34}

Correct solutions:
Deryk - 10 points
Andrew - 9 points
Bradley, Yakov, Jalen - 5 points
Coco, Cody, Benjamin, Aaron - 3 points

Standings:
Cody - 136 points
Coco - 115 points
Benjamin, Deryk - 86 points
Yakov, Jalen - 83 points
Bradley - 82 points
Terry - 65 points
Andrew - 57 points
Aaron - 54 points
Ronald - 40 points