MESON Chess Problem Database

Problem Display
PID: 231577 (8/8/3N4/3p4/3kpR2/3N1B2/3K1P2/8 w - - 0 1)

Szemere, Gyula

Zaszlonk, 1927

8/8/3N4/3p4/3kpR2/3N1B2/3K1P2/8

#2

6 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rf6?
      • 1...e3+
        • 2.fxe3#
      • 1...exf3
        • 2.Rf4#
      • 1...exd3!
    • 1.Rf7?
      • 1...e3+
        • 2.fxe3#
      • 1...exf3
        • 2.Rf4#
      • 1...exd3!
    • 1.Rf8?
      • 1...e3+
        • 2.fxe3#
      • 1...exf3
        • 2.Rf4#
      • 1...exd3!
  • Keys
    • 1.Rf5!
      • 1...e3+
        • 2.fxe3#
      • 1...exd3
        • 2.Rxd5#
      • 1...exf3
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);N_PINP(b)
      • Vars
        • P(b);CHECK,OGATE::P(B),XP(b)
        • P(b);OGATEB,XB(D)::R(E)
      • Refutation
        • P(b);XS(C)
    • Try
      • R(E);N_PINP(b)
      • Vars
        • P(b);CHECK,OGATE::P(B),XP(b)
        • P(b);OGATEB,XB(D)::R(E)
      • Refutation
        • P(b);XS(C)
    • Try
      • R(E);N_PINP(b)
      • Vars
        • P(b);CHECK,OGATE::P(B),XP(b)
        • P(b);OGATEB,XB(D)::R(E)
      • Refutation
        • P(b);XS(C)
  • Actual
    • R(E);N_PINP(b)
    • Vars
      • P(b);CHECK,OGATE::P(B),XP(b)
      • P(b);XS(C)::R1(E),XP(c)
      • P(b);OGATEB,XB(D)::R(E)
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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).