MESON Chess Problem Database

Problem Display
PID: 7476 (7b/8/8/Q1Np3r/2k5/6R1/n1KPPn2/6B1 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1990

7b/8/8/Q1Np3r/2k5/6R1/n1KPPn2/6B1

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.d3#
    • 1...Sh1
      • 2.d3#
    • 1...Sd3
      • 2.exd3#
    • 1...Sh3
      • 2.d3#
    • 1...Se4
      • 2.d3#
    • 1...Sg4
      • 2.d3#
  • Tries
    • 1.d3+?
      • 1...Sxd3
        • 2.exd3#
      • 1...Kd4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qc5#
      • 1...Sb4+
        • 2.Qxb4#
      • 1...Kd4
        • 2.Rg4#
      • 1...Sxd3
        • 2.exd3#
      • 1...Bd4
        • 2.Qa6#
      • 1...Se4
        • 2.Qa6#
      • 1...d4
        • 2.Sb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::P(C)
    • S(b);OGATE::P(D),XS(b)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • S(b);OGATE,XP(C)::P(D),XS(b)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(b)
  • Actual
    • S(G);
    • Threat
      • QAR1(F)
    • Vars
      • S(a);CHECK,N_GUARD::QAR1(F),XS(a)
      • K(c);P-FLIGHT,P_SPINS(b)::R(E)
      • S(b);OGATE,XS(G)::P(D),XS(b)
      • B(f);SBLOCK::QAB(F)
      • S(b);::QAB(F)
      • P(d);SBLOCK,S_CUTB(f)::S(G)
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