MESON Chess Problem Database

Problem Display
PID: 11782 (4Q3/2P1P1PN/4k3/8/4p3/B7/8/1B5K w - - 0 1)

Hoffmann, Fritz

Berliner Zeitung, 1972

4Q3/2P1P1PN/4k3/8/4p3/B7/8/1B5K

#2

8 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5?
      • threat
        • 2.Ba2#
        • 2.e8Q#
        • 2.g8Q#
        • 2.g8B#
      • 1...e3
        • 2.Ba2#
        • 2.Qf5#
        • 2.e8Q#
        • 2.g8Q#
        • 2.g8B#
      • 1...Kf7!
    • 1.Qh5?
      • threat
        • 2.c8Q#
        • 2.c8B#
        • 2.e8Q#
      • 1...e3
        • 2.Qf5#
        • 2.c8Q#
        • 2.c8B#
        • 2.e8Q#
      • 1...Kd7!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Qxe4#
      • 1...Kf5
        • 2.Qxe4#
      • 1...Kf7!
    • 1.Qg6+?
      • 1...Kd5
        • 2.Qxe4#
      • 1...Ke5
        • 2.Qxe4#
      • 1...Kd7!
  • Keys
    • 1.Qa8!
      • 1...Ke5
        • 2.Qxe4#
      • 1...Kf5
        • 2.Qxe4#
      • 1...Kd7
        • 2.c8Q#
      • 1...Kf7
        • 2.g8Q#
      • 1...e3
        • 2.e8Q#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(4)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);
      • Threat
        • DUALS(3)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(H),XP(a)
        • K(b);P_SPINP(a),S_FLIGHT::QAB1(H),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(H),XP(a)
        • K(b);P-FLIGHT::QAR1(H),XP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(b);P-FLIGHT::QAR1(H),XP(a)
      • K(b);P_SPINP(a),S_FLIGHT::QAB1(H),XP(a)
      • K(b);S_FLIGHT::P=Q
      • P(a);::P=Q
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