MESON Chess Problem Database

Problem Display
PID: 48310 (2Q3b1/3P1rpp/4n2n/3N1kpR/2P2P1P/2B1P3/6P1/K2B3N w - - 0 1)

Kopaev, Viacheslav Georgievich

Bulletin of the Central Chess Club of USSR, 1972

2Q3b1/3P1rpp/4n2n/3N1kpR/2P2P1P/2B1P3/6P1/K2B3N

#2

13 + 8

3335 Cyclone 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bc2#
    • 1...Sg4
      • 2.Bc2#
    • 1...g6
      • 2.Sg3#
  • Tries
    • 1.Rxg5+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Bc2#
      • 1...Sxg5!
    • 1.Qc6?
      • 1...Ke4
        • 2.Bc2#
      • 1...Kg6
        • 2.Rxg5#
      • 1...Sxf4
        • 2.Sg3#
      • 1...Rf6
        • 2.Se7#
      • 1...Re7
        • 2.Sxe7#
      • 1...Rf8
        • 2.Se7#
      • 1...Sd4
        • 2.Sg3#
      • 1...Sc5
        • 2.Sg3#
      • 1...Sc7
        • 2.Sg3#
      • 1...Sd8
        • 2.Sg3#
      • 1...Sf8
        • 2.Sg3#
      • 1...Sg4
        • 2.Bc2#
      • 1...g6
        • 2.Sg3#
      • 1...Rxd7!
    • 1.g4+?
      • 1...Ke4
        • 2.Sf2#
      • 1...Sxg4
        • 2.Bc2#
      • 1...Kg6!
    • 1.e4+?
      • 1...Kxe4
        • 2.Bc2#
      • 1...Kg6!
  • Keys
    • 1.Qe8!
      • 1...Ke4
        • 2.Bc2#
      • 1...Kg6
        • 2.Se7#
      • 1...Rxd7
        • 2.Sg3#
      • 1...Sxf4
        • 2.Rxg5#
      • 1...Rf6
        • 2.Sg3#
      • 1...Re7
        • 2.Sg3#
      • 1...Rf8
        • 2.Sg3#
      • 1...Sd4
        • 2.Rxg5#
      • 1...Sc5
        • 2.Rxg5#
      • 1...Sc7
        • 2.Rxg5#
      • 1...Sd8
        • 2.Rxg5#
      • 1...Sf8
        • 2.Rxg5#
      • 1...Sg4
        • 2.Bc2#
      • 1...g6
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),S_FLIGHT::B(B)
    • S(d);SBLOCK::B(B)
    • P(f);SBLOCK::S(C)
  • Tries
    • Try
      • R(K);CHECK,XP(b)
      • Refutation
        • S(c);XR(K)
    • Try
      • Q(M);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::B(B)
        • K(a);N_SPINP(b),P_SPINS(c),S_FLIGHT::R1(K),XP(b)
        • S(c);XP(H)::S(C)
        • R(e);N_GUARD::S(J)
        • R(e);N_GUARD::S(J),XR(e)
        • S(c);::S(C)
        • S(d);SBLOCK::B(B)
        • P(f);SBLOCK::S(C)
      • Refutation
        • R(e);XP(L)
    • Try
      • P(D);CHECK
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::S(C)
        • S(d);SBLOCK,XP(D)::B(B)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • P(F);CHECK
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT,XP(F)::B(B)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
  • Actual
    • Q(M);
    • Vars
      • K(a);N_SPINP(b),P_SPINS(c),S_FLIGHT::B(B)
      • K(a);N_SPINP(b),P_SPINR(e),S_FLIGHT::S(J)
      • R(e);XP(L)::S(C)
      • S(c);N_GUARD,XP(H)::R1(K),XP(b)
      • R(e);::S(C)
      • S(c);N_GUARD::R1(K),XP(b)
      • S(d);SBLOCK::B(B)
      • P(f);SBLOCK::S(C)
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