MESON Chess Problem Database

Problem Display
PID: 234537 (3Q4/8/8/8/8/3K4/P5P1/3k4 w - - 0 1)

Speckmann, Werner

Source?, 0000

3Q4/8/8/8/8/3K4/P5P1/3k4

#2

4 + 1

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qb6?
      • threat
        • 2.Qg1#
        • 2.Qb1#
      • 1...Ke1
        • 2.Qg1#
      • 1...Kc1!
    • 1.Qf6?
      • threat
        • 2.Qa1#
        • 2.Qf1#
      • 1...Kc1
        • 2.Qa1#
      • 1...Ke1!
    • 1.Qh8?
      • threat
        • 2.Qa1#
        • 2.Qh1#
      • 1...Kc1
        • 2.Qa1#
      • 1...Ke1!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qa1#
        • 2.Qg1#
      • 1...Kc1
        • 2.Qa1#
      • 1...Ke1
        • 2.Qg1#

Anticipated by 47232(1906)

This anticipates 87373(1964)

FEATURES

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