MESON Chess Problem Database

Problem Display
PID: 44560 (2k5/8/2K5/8/8/8/8/2Q5 w - - 0 1)

Courtenay, Edward H

New York Clipper, 1868

2k5/8/2K5/8/8/8/8/2Q5

#2

2 + 1

175 Dubuque Chess Journal 1870
5454 Near Snap 2009
6490 yacpdb 2009
3713 Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3?
      • threat
        • 2.Qf8#
        • 2.Qa8#
      • 1...Kd8
        • 2.Qf8#
      • 1...Kb8!
    • 1.Qh6?
      • threat
        • 2.Qf8#
        • 2.Qh8#
      • 1...Kd8
        • 2.Qf8#
      • 1...Kb8!
    • 1.Qf1?
      • threat
        • 2.Qf8#
      • 1...Kd8
        • 2.Qf8#
      • 1...Kb8!
    • 1.Qc5?
      • threat
        • 2.Qf8#
      • 1...Kd8
        • 2.Qf8#
      • 1...Kb8!
  • Keys
    • 1.Qf4!
      • 1...Kd8
        • 2.Qf8#

Anticipated by 2446(1849), 9304(1868)

This anticipates 6393(1929), 15222(1981), 138413(1983)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
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