MESON Chess Problem Database

Problem Display
PID: 182290 (8/3Q3B/3pp1N1/2Rp4/K2k2p1/1P4P1/3P4/8 w - - 0 1)

Beitser, Ferenc

Magyar Sakklap, 1906

8/3Q3B/3pp1N1/2Rp4/K2k2p1/1P4P1/3P4/8

#2

8 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Se7?
      • 1...Kxc5
        • 2.Qa7#
      • 1...dxc5
        • 2.Sc6#
      • 1...e5
        • 2.Rxd5#
      • 1...Ke5!
    • 1.Qxe6?
      • threat
        • 2.Rxd5#
        • 2.Qxd5#
        • 2.Qe3#
      • 1...Kd3
        • 2.Qe3#
      • 1...dxc5
        • 2.Qe3#
      • 1...Kxc5!
  • Keys
    • 1.Se5!
      • 1...Kxc5
        • 2.Qa7#
      • 1...Kxe5
        • 2.Qg7#
      • 1...dxc5
        • 2.Sc6#
      • 1...dxe5
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(E)::QAB(G)
        • P(d);P_SPINP(c),SBLOCK,XR(E)::S(F)
        • P(e);N_GUARD::R1(E),XP(c)
      • Refutation
        • K(a);P_SPINP(c),S_FLIGHT
    • Try
      • Q(G);XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • K(a);P-FLIGHT::QAR1(G)
        • P(d);SBLOCK,XR(E)::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT,XR(E)
  • Actual
    • S(F);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(E)::QAB(G)
      • K(a);OGATEB,P_SPINP(c),S_FLIGHT,XS(F)::QAB(G)
      • P(d);P_SPINP(c),SBLOCK,XR(E)::S(F)
      • P(d);P_SPINP(c),SBLOCK,XS(F)::R1(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).