MESON Chess Problem Database

Problem Display
PID: 242006 (8/4N1K1/8/8/5k2/8/8/3BQ3 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1935

8/4N1K1/8/8/5k2/8/8/3BQ3

#2

4 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qg3#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kg5!
    • 1.Bf3?
      • 1...Kg5
        • 2.Qg3#
      • 1...Kxf3!
    • 1.Qc3?
      • 1...Kg5
        • 2.Qf6#
        • 2.Qg3#
      • 1...Ke4!
    • 1.Qe2?
      • 1...Kg5
        • 2.Qg4#
      • 1...Kg3!
    • 1.Qe6?
      • 1...Kg5
        • 2.Qg4#
        • 2.Qf6#
        • 2.Qh6#
      • 1...Kg3!
  • Keys
    • 1.Sg6+!
      • 1...Kf5
        • 2.Qe5#
      • 1...Kg5
        • 2.Qa5#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAR2(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XB(A)
    • Try
      • Q(B);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);CHECK
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).