MESON Chess Problem Database

Problem Display
PID: 125403 (3K4/8/8/5k2/3B4/3N2Q1/8/8 w - - 0 1)

Anonymous

Source?, 0000

3K4/8/8/5k2/3B4/3N2Q1/8/8

#2

4 + 1

3713 Snap 2009
6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Ke8?
      • 1...Ke6
        • 2.Qe5#
      • 1...Ke4!
    • 1.Se1?
      • 1...Ke4
        • 2.Qe5#
      • 1...Ke6!
    • 1.Qg7?
      • 1...Ke6
        • 2.Qd7#
      • 1...Ke4!
  • Keys
    • 1.Sb4!
      • 1...Ke4
        • 2.Qg4#
      • 1...Ke6
        • 2.Qg6#

This anticipates 42619(1979), 15149(1980)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT::QAR2(B)
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