MESON Chess Problem Database

Problem Display
PID: 241760 (8/6K1/8/6kp/4Q3/3N4/6n1/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1928

8/6K1/8/6kp/4Q3/3N4/6n1/8

#2

3 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qf4#
    • 1...Se3
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qf4#
    • 1...h4
      • 2.Qg6#
  • Tries
    • 1.Kh7?
      • 1...Sf4
        • 2.Qxf4#
      • 1...h4
        • 2.Qg6#
      • 1...Se1
        • 2.Qf4#
      • 1...Se3
        • 2.Qf4#
      • 1...Sh4
        • 2.Qf4#
      • 1...Kf6!
    • 1.Sf2?
      • threat
        • 2.Sh3#
      • 1...h4
        • 2.Qg4#
        • 2.Qe5#
      • 1...Sf4!
    • 1.Se5?
      • threat
        • 2.Sf3#
        • 2.Sf7#
      • 1...h4
        • 2.Qg4#
      • 1...Se1
        • 2.Sf7#
      • 1...Sh4
        • 2.Sf7#
      • 1...Sf4!
    • 1.Qxg2+?
      • 1...Kf5
        • 2.Qg6#
      • 1...Kh4!
  • Keys
    • 1.Kf7!
      • 1...Kh6
        • 2.Qg6#
      • 1...Sf4
        • 2.Qxf4#
      • 1...h4
        • 2.Qg6#
      • 1...Se1
        • 2.Qf4#
      • 1...Se3
        • 2.Qf4#
      • 1...Sh4
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
    • P(c);SBLOCK::QAR1(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • P(c);SBLOCK::QAR1(B)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Threat
        • S(A)
      • Refutation
        • S(a);
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);N_GUARD::QAR1(B)
        • S(a);::S(A)
      • Refutation
        • S(a);
    • Try
      • Q(B);CHECK,XS(a)
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • K(b);S_FLIGHT::QAR1(B)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • P(c);SBLOCK::QAR1(B)
      • S(a);N_GUARD::QAB1(B)
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Developed and maintained by Brian Stephenson.
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