MESON Chess Problem Database

Problem Display
PID: 231082 (7B/8/8/7K/Q3pk2/2N5/6P1/8 w - - 0 1)

von Koslowski, H

Dresdner Anzeiger, 1927

7B/8/8/7K/Q3pk2/2N5/6P1/8

#2

5 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qxe4#
  • Tries
    • 1.Kh4?
      • threat
        • 2.Qxe4#
      • 1...Kf5
        • 2.Qxe4#
      • 1...Ke3!
    • 1.Se2+?
      • 1...Kf5
        • 2.Qd7#
      • 1...Ke3!
    • 1.Sd5+?
      • 1...Kf5
        • 2.Qd7#
      • 1...Kg3!
    • 1.Qd4?
      • threat
        • 2.Qf2#
      • 1...Kf5
        • 2.Qe5#
        • 2.Qf6#
        • 2.Qxe4#
      • 1...Kg3!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qf2#
      • 1...Ke3
        • 2.Sd5#
      • 1...Kg3
        • 2.Be5#
      • 1...Kf5
        • 2.Qxe4#
      • 1...e3
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(a),P-FLIGHT::QAB1(C),XP(a)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR1(C),XP(a)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAB1(C),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAB(C)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAB(C)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
  • Actual
    • Q(C);N_PINP(a)
    • Threat
      • QAR2(C)
    • Vars
      • K(b);S_FLIGHT::S(B)
      • K(b);S_FLIGHT::B(E)
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(C),XP(a)
      • P(a);SBLOCK::S(B)
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