MESON Chess Problem Database

Problem Display
PID: 141533 (Q3N1B1/Kn3qrn/NPr5/1PBk4/4R3/4PP2/8/8 w - - 0 1)

Golubenko, Vladimir Aleksandrovich

Probleemblad, 1977

Q3N1B1/Kn3qrn/NPr5/1PBk4/4R3/4PP2/8/8

#2

11 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Sb4#
    • 1...Rxb6
      • 2.Sec7#
    • 1...Rd6
      • 2.Sec7#
    • 1...Rf6
      • 2.Sec7#
    • 1...Rcg6
      • 2.Sec7#
    • 1...Rh6
      • 2.Sec7#
    • 1...Rc7
      • 2.Sexc7#
    • 1...Sa5+
      • 2.Sec7#
    • 1...Sxc5+
      • 2.Sac7#
    • 1...Sd6+
      • 2.Sec7#
    • 1...Sd8+
      • 2.Sec7#
  • Tries
    • 1.Be7?
      • threat
        • 2.Sb4#
      • 1...Rd6
        • 2.Sec7#
      • 1...Sd6
        • 2.Sec7#
        • 2.Qxc6#
      • 1...Rc4!
    • 1.Bxf7+?
      • 1...Re6
        • 2.Sec7#
        • 2.Bxe6#
        • 2.Qxb7#
      • 1...Rxf7!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Sb4#
      • 1...Sa5+
        • 2.Sac7#
      • 1...Sc5+
        • 2.Sac7#
      • 1...Sxd6+
        • 2.Sec7#
      • 1...Sd8+
        • 2.Sac7#
      • 1...Rxd6
        • 2.Sec7#
      • 1...Rc4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(b);P_SPINS(c),SBLOCK,XB(E)::S(F)
    • R(b);N_GUARD,P_SPINS(c),XP(G)::S(J)
    • R(b);N_GUARD,P_SPINS(c)::S(J)
    • R(b);N_GUARD,P_SPINS(c)::S(J),XR(b)
    • S(c);CHECK,P_SPINR(b)::S(J)
    • S(c);CHECK,P_SPINR(b),SBLOCK,XB(E)::S(F)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(F)
      • Vars
        • R(b);N_GUARD,P_SPINS(c)::S(J)
      • Refutation
        • R(b);P_SPINS(c)
    • Try
      • B(K);CHECK,XQ(d)
      • Refutation
        • R(e);XB(K)
  • Actual
    • B(E);
    • Threat
      • S(F)
    • Vars
      • S(c);CHECK,P_SPINR(b)::S(F)
      • S(c);CHECK,P_SPINR(b),SBLOCK,XB(E)::S(J)
      • R(b);N_GUARD,P_SPINS(c),SBLOCK,XB(E)::S(J)
      • R(b);P_SPINS(c),SBLOCK::R1(C)
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