MESON Chess Problem Database

Problem Display
PID: 208233 (5K2/5p2/6p1/7k/8/1n6/8/1Q4R1 w - - 0 1)

Zuncke, Klaus-Peter

Land og Folk, 1978

5K2/5p2/6p1/7k/8/1n6/8/1Q4R1

#2

3 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Qh7#
  • Tries
    • 1.Rg2?
      • threat
        • 2.Qh1#
      • 1...Kh4
        • 2.Qh1#
      • 1...Kh6
        • 2.Qh1#
      • 1...g5
        • 2.Qh7#
      • 1...Sc1!
    • 1.Qc2?
      • threat
        • 2.Qh2#
      • 1...Kh4
        • 2.Qh2#
      • 1...Kh6
        • 2.Qh2#
      • 1...g5
        • 2.Qh7#
      • 1...Sd2!
    • 1.Qd3?
      • threat
        • 2.Qh3#
      • 1...Kh6
        • 2.Qh3#
      • 1...g5
        • 2.Qh7#
      • 1...Kh4!
    • 1.Qf5+?
      • 1...Kh4
        • 2.Qg4#
      • 1...Kh6
        • 2.Rh1#
        • 2.Qh3#
      • 1...g5
        • 2.Rh1#
        • 2.Qh7#
        • 2.Qxg5#
      • 1...gxf5!
    • 1.Qxg6+?
      • 1...Kh4
        • 2.Rh1#
        • 2.Qh7#
        • 2.Qg4#
        • 2.Qh6#
      • 1...fxg6!
    • 1.Qd1+?
      • 1...Kh4
        • 2.Qg4#
      • 1...Kh6!
    • 1.Qb2?
      • threat
        • 2.Qh8#
        • 2.Qh2#
      • 1...Kh4
        • 2.Qh8#
        • 2.Qh2#
      • 1...Kh6
        • 2.Qh8#
        • 2.Qh2#
      • 1...Sd2
        • 2.Qh8#
      • 1...Sd4
        • 2.Qh2#
      • 1...f6
        • 2.Qh2#
      • 1...g5!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qh1#
      • 1...Kh6
        • 2.Qh1#
        • 2.Qh4#
      • 1...g5
        • 2.Rh1#
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE::QAR2(A)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR(A)
      • Vars
        • K(b);P-FLIGHT::QAR(A)
        • P(c);OGATE::QAR2(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • K(b);P-FLIGHT::QAR(A)
        • P(c);OGATE::QAR2(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR(A)
        • P(c);OGATE::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);CHECK,XP(c)
      • Refutation
        • P(d);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR(A)
        • P(d);::QAR(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
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