Mat 19/06/2002

Bruno's Chess Problem: 19/06/2002

A.Kopnin, 1er Pr., Memorial Bheting, 1969

Mat en 4(***)
chess problem diagram

Les blancs jouent

Astuce :

niveau : * (très facile) à ***** (très difficile)

1. Bh6! ... 2. Qg7+ Ke8 3. Qd7#
  1... Ke7 2. Qg7+ Kd6 3. Qd7+ Ke5 4. Ng6#
  1... Rxc5 2. Re2 ... 3. Qg7#
     2... Re5 3. Qg7+ ... 4.Qd7#
     2... Rg5 3. Nf5 ... 4. Nd6, Re7#
        3... Rxf5 (or Rg7, Rxh5) 4. Qg7#
  1... Rg4 2. Re1
     2... f5 3. Re6 ... 4. Qf6#
        3... Rg6 4. hxg6#
        3... Rg7 4. Qxg7#
     2... Rg5 3. Nf5 ... 4. Re7#
        3... Rxf5 (or Rg7, Rxh5) 4. Qg7#
     2... Rgg3 3. Re6 ... 4. Qxf6#
        3... Rbf3 4. Re3#
        3... Rgf3 (or Rg7) 4. Qg7#
        3... Rg6 4. hxg6#
  1... Rg3 2. Re2
     2... f5 3. Re6 ... 4. Qf6#
        3... Rg6 4. hxg6#
        3... Rg7 4. Qxg7#
     2... Rgg4 3. Re6 ... 4. Qxf6#
        3... Rcf4 4. Re4#
        3... Rgf4 (or Rg7) 4. Qg7#
        3... Rg6 4. hxg6#
     2... Rg5 3. Nf5 ... 4. Re7#
        3... Rxf5 (or Rg7, Rxh5) 4. Qg7#
     2... Rxg2 3. Nxg2 ... 4. Qg7#