Checkmate 12-25-2005

Bruno's Chess Problem: 12/25/2005

N.Petrovic, 1st Pr., Ernst TT, 1928

Mate in 4(****)
chess problem diagram

White to play

Tip:

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1. Bb2! ... 2. Nd4+ Ke5 3. Nxf3+ ... 4.Nxg5#
  1... Rc5, Rgxh5 2. Nd4+ Ke5 3. Nxg6+ Ke4 4. Rf4#
  1... Bxg3, gxh5 2. Nd4+ Ke5 3. Nxf3+ ... 4.Nxg4#
  1... Rhxh5 2. Nd4+ Ke5 3. Ne2+
        3... Ke6 4. Nf4#
        3... Ke4 4. Rf4#
  1... Rxb5 2. Bxg6 ... 3. Rfxe7#
     2... Re5 3. Bf5+ Rxf5 4. Rfxe7#
     2... Rxb2 3. Bf5+ Ke5 4. Ng6#
  1... Bg1 2. Bg7 ... 3. Rfxe7+ Kf5 4. Re5#
     2... Rc5 3. Bxg6 ... 4. Rfxe7#
     2... Rxb5 3. Bxg6 ... 4. Rfxe7#
        3... Bc5 4. Bf5#