MESON Chess Problem Database

Problem Display
PID: 79801 (8/8/8/8/8/5pKQ/8/6k1 w - - 0 1)

Schonberger, Tibor

Diagramme und Figuren, 1967

8/8/8/8/8/5pKQ/8/6k1

#2

2 + 2

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Qg2#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qd1#
      • 1...Kf1
        • 2.Qd1#
      • 1...Kh1
        • 2.Qd1#
      • 1...f2!
  • Keys
    • 1.Qh2+!
      • 1...Kf1
        • 2.Qf2#

Anticipated by 99635(1925)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • K(a);P-FLIGHT::QAR(B)
      • Refutation
        • P(b);
  • Actual
    • Q(B);CHECK
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
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