MESON Chess Problem Database

Problem Display
PID: 23091 (4K2Q/N6B/8/3k4/8/Bp6/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

4K2Q/N6B/8/3k4/8/Bp6/8/8

#2

5 + 2

5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qd6#
      • 1...Kxd4!
    • 1.Qe5+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Kxe5!
    • 1.Qf8?
      • 1...Kc4
        • 2.Qc5#
      • 1...Kd4
        • 2.Qc5#
      • 1...Ke5
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
        • 2.Qf5#
      • 1...b2!
  • Keys
    • 1.Bb2!
      • 1...Kc4
        • 2.Qd4#
      • 1...Kc5
        • 2.Qd4#
      • 1...Kd6
        • 2.Qe5#
      • 1...Ke6
        • 2.Qe5#

Anticipated by 194869(1918)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Vars
        • K(b);S_FLIGHT::QAR1(E)
        • K(b);P-FLIGHT::QAB1(E)
      • Refutation
        • P(a);
  • Actual
    • B(A);
    • Vars
      • K(b);S_FLIGHT::QAR1(E)
      • K(b);P-FLIGHT::QAB1(E)
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