MESON Chess Problem Database

Problem Display
PID: 255115 (8/8/4N3/4kp2/2P1N3/8/4Q3/4K3 w - - 0 1)

Lehanka, G

Wiener Schachzeitung, 1932

8/8/4N3/4kp2/2P1N3/8/4Q3/4K3

#2

5 + 2

15601 Albrecht-Leiss-Degener Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qb2+?
      • 1...Kxe4
        • 2.Qe2#
      • 1...Kxe6!
  • Keys
    • 1.Qh5!
      • 1...Kxe4
        • 2.Qe2#
      • 1...Kxe6
        • 2.Qe8#

Anticipated by 223095(1885), 107897(1897)

This anticipates 77518(1984)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
  • Actual
    • Q(B);P_PINP(b)
    • Vars
      • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XS(D)::QAR2(B)
      • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XS(E)::QAR2(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).