MESON Chess Problem Database

Problem Display
PID: 12089 (n7/8/6Q1/pk1p4/N7/1K6/8/8 w - - 0 1)

Lokker, Miklosh S

Shakhmaty v SSSR, 1974

n7/8/6Q1/pk1p4/N7/1K6/8/8

#2

3 + 4

3296 Shakhmatny zadachi miniaturi 1987

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Qxb6#
    • 1...Sc7
      • 2.Qb6#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Sc3#
      • 1...Sb6
        • 2.Qxb6#
      • 1...d4!
    • 1.Qf6?
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sc7
        • 2.Qb6#
      • 1...d4!
    • 1.Qh6?
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sc7
        • 2.Qb6#
      • 1...d4!
  • Keys
    • 1.Qe6!
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sc7
        • 2.Qb6#
      • 1...d4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::QAR1(C),XS(d)
    • S(d);N_GUARD::QAR1(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • S(B)
      • Vars
        • S(d);N_GUARD::QAR1(C),XS(d)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • S(d);N_GUARD::QAR1(C),XS(d)
        • S(d);N_GUARD::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • S(d);N_GUARD::QAR1(C),XS(d)
        • S(d);N_GUARD::QAR1(C)
      • Refutation
        • P(c);
  • Actual
    • Q(C);
    • Vars
      • S(d);N_GUARD::QAR1(C),XS(d)
      • S(d);N_GUARD::QAR1(C)
      • P(c);OGATE::QAB1(C)
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