MESON Chess Problem Database

Problem Display
PID: 233391 (2nK2B1/Q7/2R2N2/1pN3p1/1p1k2n1/1P1rp3/5R2/8 w - - 0 1)

Gavrilovski, Zoran

Chess Life, 1989

2nK2B1/Q7/2R2N2/1pN3p1/1p1k2n1/1P1rp3/5R2/8

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3+
      • 2.Scd7#
    • 1...Ke5+
      • 2.Sxd3#
    • 1...Se5
      • 2.Se6#
    • 1...Sd6
      • 2.Scd7#
    • 1...Se7
      • 2.Scd7#
  • Tries
    • 1.Scd7+?
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sxa7!
    • 1.Qd7+?
      • 1...Kc3
        • 2.Sxd3#
        • 2.Sa4#
        • 2.Sce4#
        • 2.Sa6#
        • 2.Sb7#
        • 2.Sfe4#
        • 2.Qxd3#
      • 1...Ke5
        • 2.Sxd3#
        • 2.Sxg4#
        • 2.Rf5#
        • 2.Re6#
      • 1...Sd6!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Sxg4#
      • 1...Kc3+
        • 2.Sd5#
      • 1...Ke5+
        • 2.Sfd7#
      • 1...Sxf2
        • 2.Sfe4#
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sh5#
        • 2.Sfd7#
        • 2.Sh7#
        • 2.Se8#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Sh2
        • 2.Sfe4#
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sh5#
        • 2.Sfd7#
        • 2.Sh7#
        • 2.Se8#
      • 1...Se5
        • 2.Se6#
      • 1...Sh6
        • 2.Sfe4#
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sh5#
        • 2.Sfd7#
        • 2.Sh7#
        • 2.Se8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(d);CHECK,S_FLIGHT::R(D)+S(C)
    • K(d);CHECK,S_FLIGHT::S(C),XR(a)
    • S(e);SBLOCK::QAB(F)+S(C),DCHECK
    • S(h);N_GUARD::QAB(F)+S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAB(F),XS(h)
      • Refutation
        • S(h);XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • S(h);P_SPINS(h)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)+S(E),XS(e)
    • Vars
      • K(d);CHECK,S_FLIGHT::QAB(F)+S(E),DCHECK
      • S(e);OGATE,P_SPINS(e),XS(E)::QAB(F),XS(e)
      • S(e);SBLOCK::S(C)
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