MESON Chess Problem Database

Problem Display
PID: 169612 (Q7/1N6/8/4Rp2/5k2/7K/8/1B6 w - - 0 1)

Hoffmann, Klaus Peter

Heilbronner Stimme, 1995

Q7/1N6/8/4Rp2/5k2/7K/8/1B6

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3?
      • threat
        • 2.Rxf5#
        • 2.Qe3#
        • 2.Qg3#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Kg5!
    • 1.Qd8?
      • 1...Kxe5
        • 2.Qd6#
      • 1...Kf3!
    • 1.Qe8?
      • threat
        • 2.Rxf5#
      • 1...Kf3
        • 2.Rxf5#
      • 1...Kg5!
    • 1.Qf8?
      • threat
        • 2.Qxf5#
      • 1...Kf3
        • 2.Qxf5#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Kg5!
    • 1.Qg8?
      • threat
        • 2.Qg3#
      • 1...Kf3
        • 2.Qg3#
      • 1...Kxe5!
  • Keys
    • 1.Qa6!
      • 1...Kf3
        • 2.Qf1#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Kg5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • R1(C),XP(b)
      • Vars
        • K(a);P-FLIGHT::R(C),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(E);P_PINP(b)
      • Threat
        • QAR1(E),XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR2(E),XP(b)
        • K(a);N_SPINP(b),OGATEB,S_FLIGHT,XR(C)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • Q(E);
    • Vars
      • K(a);P-FLIGHT::QAR2(E)
      • K(a);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
      • K(a);P_SPINP(b),S_FLIGHT::R1(C),XP(b)
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