MESON Chess Problem Database

Problem Display
PID: 227897 (8/8/6K1/8/4p1kp/6P1/5PQ1/8 w - - 0 1)

Ballo, Gyorgy

Magyar Sakkvilag, 1926

8/8/6K1/8/4p1kp/6P1/5PQ1/8

#2

4 + 3

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.f3#
    • 1...hxg3
      • 2.Qxg3#
    • 1...h3
      • 2.Qxe4#
  • Keys
    • 1.gxh4+!
      • 1...Kf4
        • 2.Qg3#
      • 1...Kxh4
        • 2.Qg3#

This anticipates 171394(1995)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • P(a);N_GUARD::P(A)
    • P(c);OGATE,P_SPINP(c),XP(C)::QAR1(B),XP(c)
    • P(c);SBLOCK::QAR2(B),XP(a)
  • Actual
    • P(C);CHECK,XP(c)
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);P-FLIGHT,XP(C)::QAB1(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).