MESON Chess Problem Database

Problem Display
PID: 15950 (K2b1B2/3Rq3/2P2P2/2PP2Q1/3kN1p1/P2p4/1n1N4/2R4n w - - 0 1)

Simoni, Francesco

1st Prize, Spisska Borovicka, 1989

K2b1B2/3Rq3/2P2P2/2PP2Q1/3kN1p1/P2p4/1n1N4/2R4n

#2

12 + 7

702 Phenix 1990
14744 Nuova Antologia dei Problemisti Italiani 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Bxc5#
    • 1...Qxe4
      • 2.Sb3#
    • 1...Qe6
      • 2.dxe6#
    • 1...Sd1
      • 2.Rc4#
    • 1...Sa4
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sb3#
        • 2.Sb5#
      • 1...Qe5
        • 2.Sb5#
      • 1...Sc4
        • 2.Sb3#
        • 2.Rxc4#
      • 1...Qxd6!
    • 1.Qf4?
      • threat
        • 2.Sb3#
      • 1...Qxd7
        • 2.Sc3#
      • 1...Qd6!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sb5#
      • 1...Kxc5
        • 2.Qe3#
      • 1...Qxc5
        • 2.Qf4#
      • 1...Sc4
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(f);OGATE,XP(E)::B(L),XQ(f)
    • Q(f);SBLOCK,XS(D)::S(B)
    • Q(f);OGATE::R(J)+P(F),XQ(f)
    • S(b);N_GUARD::R1(A)
    • S(b);N_GUARD::R1(A),XS(b)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);::S(D)
      • Refutation
        • Q(f);XS(D)
    • Try
      • Q(G);
      • Threat
        • S(B)
      • Vars
        • Q(f);N_GUARD,XR(J)::QAR(G)+S(D)
      • Refutation
        • Q(f);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(d);P_SPINQ(f),S_FLIGHT,XP(E)::QAB(G)
      • Q(f);N_GUARD,XP(E)::QAR2(G)
      • S(b);SBLOCK::S(B)
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