MESON Chess Problem Database

Problem Display
PID: 241987 (8/6Q1/4p2N/8/4pk2/4p3/4K3/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/6Q1/4p2N/8/4pk2/4p3/4K3/8

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qg4#
  • Tries
    • 1.Ke1?
      • 1...Kf3
        • 2.Qg4#
      • 1...e5
        • 2.Qg4#
      • 1...e2!
    • 1.Kf1?
      • 1...Kf3
        • 2.Qg4#
      • 1...e5
        • 2.Qg4#
      • 1...e2+!
    • 1.Qg1?
      • 1...e5
        • 2.Qxe3#
        • 2.Qg4#
      • 1...Ke5!
    • 1.Qg2?
      • 1...e5
        • 2.Qg4#
      • 1...Ke5!
    • 1.Qg6?
      • 1...e5
        • 2.Qg4#
      • 1...Ke5!
    • 1.Qg8?
      • 1...e5
        • 2.Qg4#
      • 1...Ke5!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Qg5#
      • 1...Kf5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(d);SBLOCK::QAR1(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
        • P(d);SBLOCK::QAR1(C)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
        • P(d);SBLOCK::QAR1(C)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(C);
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(d);SBLOCK::QAR1(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(d);SBLOCK::QAR1(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(d);SBLOCK::QAR1(C)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAB1(C)
    • Vars
      • K(c);P-FLIGHT::QAR1(C)
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