MESON Chess Problem Database

Problem Display
PID: 46448 (4Q3/3p4/8/q4kBK/5N2/8/8/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

4Q3/3p4/8/q4kBK/5N2/8/8/8

#2

4 + 3

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qg6#
    • 1...d5
      • 2.Qe6#
    • 1...d6
      • 2.Qe6#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sg3#
        • 2.Sd4#
      • 1...Qe5
        • 2.Qg6#
      • 1...Qe1
        • 2.Sd4#
      • 1...Qd2
        • 2.Sg3#
      • 1...Qb4
        • 2.Sg3#
      • 1...Qb6
        • 2.Sg3#
      • 1...Qc7
        • 2.Sd4#
      • 1...Qa1
        • 2.Sg3#
      • 1...Qa3
        • 2.Sd4#
      • 1...Qa4
        • 2.Sg3#
      • 1...Qc5
        • 2.Sg3#
      • 1...Qd5
        • 2.Sg3#
      • 1...Qa7
        • 2.Sg3#
      • 1...Qc3!
    • 1.Sg2?
      • threat
        • 2.Se3#
        • 2.Sh4#
      • 1...Qe5
        • 2.Qg6#
      • 1...Qd2
        • 2.Sh4#
      • 1...Qc3
        • 2.Sh4#
      • 1...Qb4
        • 2.Se3#
      • 1...Qb6
        • 2.Sh4#
      • 1...Qa3
        • 2.Sh4#
      • 1...Qa4
        • 2.Se3#
      • 1...Qc5
        • 2.Sh4#
      • 1...Qa7
        • 2.Sh4#
      • 1...Qe1!
    • 1.Sg6?
      • threat
        • 2.Sh4#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Qb4
        • 2.Qe5#
      • 1...Qa4
        • 2.Qe5#
      • 1...Qe1!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qg6#
      • 1...Qb6
        • 2.Qe5#
      • 1...Qa6
        • 2.Qe5#

Anticipated by 105464(1986)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(a);SBLOCK::QAB1(D)
    • P(c);N_GUARD::QAB1(D)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);SBLOCK::QAB1(D)
        • Q(a);::S(A)
      • Refutation
        • Q(a);
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);SBLOCK::QAB1(D)
        • Q(a);::S(A)
      • Refutation
        • Q(a);
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • Q(a);N_GUARD::QAR1(D),XQ(a)
        • Q(a);N_GUARD::QAR1(D)
      • Refutation
        • Q(a);
  • Actual
    • S(A);
    • Threat
      • QAB1(D)
    • Vars
      • Q(a);N_GUARD::QAR1(D)
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