MESON Chess Problem Database

Problem Display
PID: 42403 (3brB2/1Kn1p3/3P2P1/RN1k3n/1Qb5/1p1N1P2/2B5/3R4 w - - 0 1)

Golubenko, Vladimir Aleksandrovich

4th Place, Far East Championship, 1991

3brB2/1Kn1p3/3P2P1/RN1k3n/1Qb5/1p1N1P2/2B5/3R4

#2

11 + 8

3335 Cyclone 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3
      • 2.Sxc7#
    • 1...Bxb5
      • 2.Bxb3#
    • 1...exd6
      • 2.Qxd6#
    • 1...e5
      • 2.Sf4#
    • 1...e6
      • 2.Qc5#
  • Tries
    • 1.Sc5+?
      • 1...Bd3
        • 2.Qd4#
      • 1...Ke5!
    • 1.Sd4+?
      • 1...Bb5
        • 2.Bxb3#
        • 2.Qc5#
      • 1...Sb5
        • 2.Qc5#
      • 1...Kxd4!
    • 1.Re1?
      • threat
        • 2.Re5#
        • 2.Qc5#
      • 1...Bxd3
        • 2.Sc3#
        • 2.Sxc7#
        • 2.Qd4#
      • 1...Sxb5
        • 2.Qc5#
      • 1...exd6
        • 2.Qxd6#
      • 1...Sa6
        • 2.Re5#
      • 1...Se6
        • 2.Re5#
      • 1...e5!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qe5#
      • 1...Ke6
        • 2.Sc5#
      • 1...Bxd3
        • 2.Bxb3#
      • 1...Bxb5
        • 2.Sf4#
      • 1...exd6
        • 2.Sxc7#
      • 1...e5
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(b);P_SPINB(b),XS(C)::R(F)+S(G),DCHECK,XS(e)
    • B(b);OGATEB,P_SPINB(b),XS(G)::B(B),XP(a)
    • P(f);OGATE,XP(H)::QAR1(E),XP(f)
    • P(f);SBLOCK::R(A)+S(C),DCHECK
    • P(f);SBLOCK::QAR1(E)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • B(b);OGATE,P_SPINB(b)::QAR1(E)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • S(e);P_SPINS(e)::QAR1(E)
      • Refutation
        • K(c);P-FLIGHT,P_SPINB(b),XS(G)
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);P_SPINS(e),XS(G)::QAR1(E)
        • P(f);OGATE,XP(H)::QAR1(E),XP(f)
        • S(e);::R1(A)
      • Refutation
        • P(f);
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(c);S_FLIGHT::S(C)
      • B(b);OGATEB,P_SPINB(b),XS(C)::B(B),XP(a)
      • B(b);P_SPINB(b),XS(G)::R(A)+S(C),DCHECK
      • P(f);XP(H)::R(F)+S(G),DCHECK,XS(e)
      • P(f);::R(F)+S(G),DCHECK,XS(e)
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