Checkmate 06-22-2006

Bruno's Chess Problem: 06/22/2006

JP.Boyer, 1st Pr., Europe Echecs, 1978

Mate in 4(***)
chess problem diagram

White to play

Tip:

Level : * (very easy) to ****** (very hard)

1. Re2! ... 2. Be3+ Nxe3 3. Rd2+ Nd3 4. Rxd3#
  1... Nc6 2. Nxc6+ Kc5+ 3. Ne5+ ... 4. Re4#
        3... Kxb6 4. Rc6#
  1... Nxd5 2. Re4+ Kd3+ 3. Re5+ Kd4 4. Rxd5#
  1... Nc2+ 2. Rcxc2 ... 3. Nc6#
     2... Qe8,Qc8,Qa8,axb6 3. Be3+ Nxe3 4. Red2#
  1... fxe2 2. Nf5+ ... 3. Nxg7+ Kd4 4. Ne6#
  1... Nd2 2. Rxd2+ Ke3+ 3. Rb2+ Kd4 4. Rxb4#