Checkmate 11-11-2002

Bruno's Chess Problem: 11/11/2002

R.Kofman & A.Lobussov, 1st Pr., Chakmaty en URSS, 1973

Mate in 4(***)
chess problem diagram

White to play

Tip:

With a register account, you could move pieces and mark mates as started or solved.

1. Rb1! ... 2. Qb3+ Kxc5 3. Qe6 ... 4. Qe5#
  1... Bf7 2. Qb2 ... 3. Qd4#
     2... e5 3. Qb8 ... 4. Qd6#
        3... Kxc5 4. Rb5#
     2... Nc3 3. Qxc3 ... 4. Qd4#
  1... Nb4 2. Rxb4 ... 3. Rd4+ Kxc5 4. Qb6#
     2... Rb1 3. Rd4+ Kxc5 4. Qe5#
  1... Re1 2. Qxf4 ... 3. Qd4#
     2... Re4 3. Qxe4+ Kxc5 4. Qe5#
  1... Rxb1 2. Qxf4 ... 3. Qd4#
     2... Rb4 3. Ne3+ Kxc5 4. Qe5#