MESON Chess Problem Database

Problem Display
PID: 208226 (8/8/2P5/3P1pPp/6k1/5N2/5K2/Q7 w - - 0 1)

Hoffmann, Klaus Peter

Badische Neueste Nachrichten, 1997

8/8/2P5/3P1pPp/6k1/5N2/5K2/Q7

#2

6 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qd4#
      • 2.Qa4#
  • Tries
    • 1.Qd4+?
      • 1...Kh3
        • 2.Qh4#
      • 1...f4!
    • 1.Qe5?
      • threat
        • 2.Qg3#
      • 1...Kh3
        • 2.Qg3#
        • 2.Qxf5#
      • 1...f4
        • 2.Qe6#
      • 1...h4!
    • 1.Qf6?
      • 1...Kh3
        • 2.Qxf5#
      • 1...Kf4
        • 2.Qd4#
      • 1...f4
        • 2.Qe6#
      • 1...h4!
    • 1.Qg1+?
      • 1...Kh3
        • 2.Qg2#
        • 2.Qg3#
      • 1...Kf4!
    • 1.Qh1?
      • threat
        • 2.Qh4#
      • 1...Kf4
        • 2.Qh4#
      • 1...h4
        • 2.Qxh4#
      • 1...f4!
    • 1.Qa4+?
      • 1...Kh3
        • 2.Qh4#
      • 1...f4!
  • Keys
    • 1.Qh8!
      • 1...Kh3
        • 2.Qxh5#
      • 1...Kf4
        • 2.Qd4#
      • 1...f4
        • 2.Qc8#
      • 1...h4
        • 2.Qxh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(b);OGATEB,SBLOCK::QAB(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A),XP(b)
        • K(a);P-FLIGHT,P_SPINP(b)::QAR2(A)
        • P(b);OGATEB,SBLOCK::QAB(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(c);::QAR1(A),XP(c)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • Q(A);
    • Vars
      • K(a);P_SPINP(c),S_FLIGHT::QAR2(A),XP(c)
      • K(a);P-FLIGHT::QAR2(A)
      • P(b);OGATEB,SBLOCK::QAB(A)
      • P(c);OGATE::QAR1(A),XP(c)
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