MESON Chess Problem Database

Problem Display
PID: 228786 (8/5p2/2N1p3/8/k1K5/8/5nQ1/8 w - - 0 1)

Maleika, Gerhard

Deutsche Schachzeitung, 1988

8/5p2/2N1p3/8/k1K5/8/5nQ1/8

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qa2#
    • 1...Sh1
      • 2.Qa2#
    • 1...Sd3
      • 2.Qa2#
    • 1...Sh3
      • 2.Qa2#
    • 1...Se4
      • 2.Qa2#
    • 1...Sg4
      • 2.Qa2#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qa1#
      • 1...Ka3
        • 2.Qa1#
      • 1...Sd1!
    • 1.Qg7?
      • threat
        • 2.Qa1#
      • 1...Ka3
        • 2.Qa1#
      • 1...f6
        • 2.Qa7#
      • 1...e5!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qa1#
      • 1...Ka3
        • 2.Qa1#
      • 1...Sd1
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(a);OGATE::QAR2(A)
    • S(a);OGATE,SBLOCK::QAR2(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • P(d);OGATE::QAR(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • S(a);OGATE::QAR(A)
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