MESON Chess Problem Database

Problem Display
PID: 175027 (8/4NK2/3p4/B3k2N/3ppp2/R4P2/8/8 w - - 0 1)

Heltai, Istvan

Pesti Naplo, 1901

8/4NK2/3p4/B3k2N/3ppp2/R4P2/8/8

#2

6 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Bc3#
    • 1...d5
      • 2.Bc7#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Sg4#
        • 2.Sd7#
      • 1...d3
        • 2.Bc3#
      • 1...d5
        • 2.Bc7#
      • 1...exf3!
    • 1.Ra1?
      • 1...exf3
        • 2.Re1#
      • 1...d3
        • 2.Bc3#
      • 1...d5
        • 2.Bc7#
      • 1...e3!
  • Keys
    • 1.Re3!
      • threat
        • 2.Rxe4#
      • 1...dxe3
        • 2.Bc3#
      • 1...fxe3
        • 2.f4#
      • 1...d5
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::B(C)
    • P(e);OGATEB::B(C)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);OGATEB::B(C)
        • P(e);OGATEB::B(C)
      • Refutation
        • P(b);XP(B)
    • Try
      • R(A);
      • Vars
        • P(b);OGATEB,XP(B)::R(A)
        • P(a);OGATEB::B(C)
        • P(e);OGATEB::B(C)
      • Refutation
        • P(b);
  • Actual
    • R(A);P_PINP(b)
    • Threat
      • R1(A),XP(b)
    • Vars
      • P(a);N_SPINP(b),OGATEB,XR(A)::B(C)
      • P(c);N_SPINP(b),OGATE,XR(A)::P(B)
      • P(e);OGATEB::B(C)
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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).