MESON Chess Problem Database

Problem Display
PID: 210250 (4Q3/4pp1K/1p3k2/1R6/8/8/8/8 w - - 0 1)

Hoffmann, Fritz

Land og Folk, 1976

4Q3/4pp1K/1p3k2/1R6/8/8/8/8

#2

3 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qc6#
    • 1...e5
      • 2.Qxe5#
    • 1...e6
      • 2.Qd8#
  • Tries
    • 1.Rd5?
      • 1...Ke6
        • 2.Qc6#
      • 1...e5
        • 2.Qxe5#
      • 1...e6
        • 2.Qd8#
      • 1...b5!
    • 1.Rh5?
      • 1...Ke6
        • 2.Qc6#
      • 1...e5
        • 2.Qxe5#
      • 1...e6
        • 2.Qd8#
      • 1...b5!
    • 1.Qd7?
      • threat
        • 2.Rf5#
        • 2.Qf5#
      • 1...e6
        • 2.Qd8#
      • 1...e5!
    • 1.Qa8?
      • 1...Ke6
        • 2.Qc6#
      • 1...e6
        • 2.Qd8#
      • 1...e5!
    • 1.Qb8?
      • threat
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...e6
        • 2.Qd8#
      • 1...Ke6!
    • 1.Qc8?
      • threat
        • 2.Rf5#
        • 2.Qf5#
      • 1...e6
        • 2.Qd8#
      • 1...e5!
  • Keys
    • 1.Kh6!
      • 1...Ke6
        • 2.Qc6#
      • 1...e5
        • 2.Qxe5#
      • 1...e6
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C)
    • P(c);OGATE::QAB1(C),XP(c)
    • P(c);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • R(A);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C)
        • P(c);OGATE::QAB1(C),XP(c)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(a);
    • Try
      • R(A);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C)
        • P(c);OGATE::QAB1(C),XP(c)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(c);::QAB1(C),XP(c)
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • P(c);
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C)
      • P(c);OGATE::QAB1(C),XP(c)
      • P(c);OGATEB,SBLOCK::QAB(C)
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