MESON Chess Problem Database

Problem Display
PID: 241915 (3B4/p7/Qpk1K3/8/8/8/1N6/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

3B4/p7/Qpk1K3/8/8/8/1N6/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qc4#
  • Tries
    • 1.Ke5?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kd7!
    • 1.Ke7?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kd5!
    • 1.Bh4?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kc7!
    • 1.Bg5?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kc7!
    • 1.Bf6?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kc7!
    • 1.Bc7?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kxc7!
    • 1.Qd3?
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Qc4#
      • 1...Kb7!
  • Keys
    • 1.Qxa7!
      • threat
        • 2.Qxb6#
      • 1...Kb5
        • 2.Qxb6#
      • 1...Kc5
        • 2.Qxb6#
      • 1...b5
        • 2.Qb6#
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(a),P-FLIGHT::QAR1(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XB(D)
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);N_PINP(a),XP(c)
    • Threat
      • QAR1(B),XP(a)
    • Vars
      • K(b);S_FLIGHT::QAR1(B),XP(a)
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(B),XP(a)
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