- LUKJANOV, Valentin
source: Šachmaty v SSSR 1978 (1527)
source: Šachmaty v SSSR 1978 (1527)
algebraic: 
  white: [Kf6, Qg7, Re7, Rh5, Bf4, Ng4, Nh2, Pd2, Pb4, Pd6, Pb3]
  black: [Kd4, Rh1, Rg1, Ba1, Bg2, Nd1, Nh8, Pd3, Pc6, Ph6]
stipulation: "#2"
solution: |
  "1...Be4[a] 2.Ke6#[B]
  1...Bd5[b] 2.Kf5#[C]
  1...Ng6[c] 2.Kxg6#[E]
  1...Nf7[d] 2.Kxf7#[F]
  1...Bh3/Bf1/Bf3 2.Nf3#[A]
  1...Ne3/Nf2/Nc3/Nb2 2.Bxe3#[D]
  
  1.Qxh8? (2.Kf7#[F]/Kg6#[E])
     1...Be4[a] 2.Kf7#[F]/Ke6#[B]
     1...Bd5[b] 2.Kf5#[C]/Kg6#[E]
  but 1...Re1!
  
  1.Nf2[G]? (2.Ke6#[B])
     1...Be4[a] 2.Rxe4#[H]
     1...Bd5[b] 2.Be5#[I]
     1...Ng6[c] 2.Kxg6#[E]
     1...Nf7[d] 2.Kxf7#[F]
     1...Nxf2 2.Be3#[D]
     1...Bh3/Bf1 2.Re4#[H]/Nf3#[A]
     1...Bf3 2.Nxf3#[A]
  but 1...Re1!
  
  1.Re6[J]? (2.Ke7#[K])
     1...Ng6[c] 2.Kxg6#[E]
     1...Nf7[d] 2.Kxf7#[F]
  but 1...Re1!
  
  1.Re3[L]? (2.Ke6#[B]/Ke7#[K])
     1...Bd5[b] 2.Kf5#[C]/Ke7#[K]/Be5#[I]
     1...Ng6[c] 2.Kxg6#[E]
     1...Nf7[d] 2.Kxf7#[F]
  but 1...Nxe3!
  
  1.Rc5[M]? (2.Kf5#[C])
     1...Be4[a] 2.Ke6#[B]/Be5#[I]
     1...Ng6[c] 2.Kxg6#[E]
     1...Nf7[d] 2.Kxf7#[F]
     1...Ne3 2.dxe3#/Bxe3#[D]
  but 1...Re1!
  
  1.Qg5?? (2.Qe5#/Qc5#)
     1...Bd5[b] 2.Qe5#
     1...Re1/Ng6[c]/Nf7[d] 2.Qc5#
  but 1...hxg5!
  
  1.Re4+[H]??
     1...Bxe4[a] 2.Ke6#[B]/Ke7#[K]
  but 1...Kxe4+!
  
  1.Rd5+??
     1...Bxd5[b]/cxd5 2.Kf5#[C]
  but 1...Kxd5+!
  
  1.Ne3[N]! (2.Kf5#[C])
     1...Be4[a] 2.Be5#[I]
     1...Bd5[b] 2.Nf5#[O]
     1...Ng6[c] 2.Kxg6#[E]
     1...Nf7[d] 2.Kxf7#[F]
     1...Nxe3 2.Bxe3#[D]
     1...Bh3/Bf1/Bf3 2.Nf3#[A]"
keywords: 
  - Active sacrifice
  - Black correction
  - B2
  - Transferred mates
  - Rudenko
  - Barnes
  - Zagoruiko