MESON Chess Problem Database

Problem Display
PID: 227767 (8/8/1p1p4/1K6/3k2N1/5Q2/8/8 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1926

8/8/1p1p4/1K6/3k2N1/5Q2/8/8

#2

3 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qe3#
  • Tries
    • 1.Kb4?
      • 1...d5
        • 2.Qe3#
      • 1...b5!
    • 1.Qe2?
      • threat
        • 2.Qc4#
      • 1...Kd5
        • 2.Qc4#
      • 1...d5
        • 2.Qe3#
      • 1...Kc3!
    • 1.Qb3?
      • threat
        • 2.Qc4#
      • 1...d5
        • 2.Qe3#
      • 1...Ke4!
  • Keys
    • 1.Qe3+!
      • 1...Kd5
        • 2.Sf6#

FEATURES

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