MESON Chess Problem Database

Problem Display
PID: 6410 (3n4/2R1R3/3k4/3n4/8/3Q4/8/3K4 w - - 0 1)

Christoforatos, G

L'Echiquier, 1929

3n4/2R1R3/3k4/3n4/8/3Q4/8/3K4

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
136 Problem Observer 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Qa6+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb6!
    • 1.Qg6+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Sf6!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qc5#
        • 2.Qe5#
      • 1...Sc6
        • 2.Rcd7#
      • 1...Se6
        • 2.Red7#
      • 1...Sb7
        • 2.Qe5#
      • 1...Sf7
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK,N_PINS(a)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR1(B),XS(c)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(B);CHECK,N_PINS(a)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR1(B),XS(c)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • S(c);SBLOCK::R1(C)
      • S(c);SBLOCK::R1(D)
      • S(c);::QAB1(B)
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