MESON Chess Problem Database

Problem Display
PID: 205691 (8/5pNB/5kNQ/8/3K4/8/8/8 w - - 0 1)

Klemensiewicz, Josef

Deutsche Schachblatter, 1925

8/5pNB/5kNQ/8/3K4/8/8/8

#2

5 + 2

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sh5+?
      • 1...Kf5
        • 2.Se5#
      • 1...Ke6!
    • 1.Se8+?
      • 1...Kf5
        • 2.Se5#
      • 1...Ke6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sf4#
        • 2.Sgh4#
        • 2.Se5#
        • 2.Sge7#
        • 2.Sf8#
        • 2.Sh8#
      • 1...Kxf5
        • 2.Se5#
      • 1...Ke6
        • 2.Sf8#
      • 1...fxg6
        • 2.Qxg6#

This anticipates 12060(1974)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::B(E)+S(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::B(E)+S(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • DUALS(6)
    • Vars
      • K(a);P-FLIGHT,XS(D)::B(E)+S(B)
      • K(a);P-FLIGHT::QAR(C)+S(B),DCHECK
      • P(b);OGATE,P_SPINP(b),XS(B)::QAR1(C),XP(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).