MESON Chess Problem Database

Problem Display
PID: 187970 (2K5/3n4/1pk5/2pp4/P1N1P3/q4R2/6B1/8 w - - 0 1)

Dunay, Zoltan

Pesti Naplo, 1910

2K5/3n4/1pk5/2pp4/P1N1P3/q4R2/6B1/8

#2

6 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Rf6#
    • 1...Sf6
      • 2.Rxf6#
    • 1...Sb8
      • 2.Rf6#
  • Tries
    • 1.Se5+?
      • 1...Sxe5
        • 2.Rf6#
      • 1...Kd6!
    • 1.Rxa3?
      • threat
        • 2.exd5#
      • 1...dxc4
        • 2.e5#
      • 1...dxe4
        • 2.Bxe4#
      • 1...d4
        • 2.e5#
      • 1...Sf6!
  • Keys
    • 1.Rb3!
      • threat
        • 2.exd5#
      • 1...dxc4
        • 2.e5#
      • 1...dxe4
        • 2.Bxe4#
      • 1...Sf6
        • 2.Rxb6#
      • 1...d4
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(f);N_GUARD::R(B)
    • S(f);N_GUARD::R(B),XS(f)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • S(f);XS(D)::R(B)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(B);XQ(a)
      • Threat
        • P(E),XP(c)
      • Vars
        • P(c);XS(D)::B(A)+P(E)
        • P(c);OGATE,P_SPINP(c),XP(E)::B(A),XP(c)
        • P(c);::B(A)+P(E)
      • Refutation
        • S(f);
  • Actual
    • R(B);
    • Threat
      • P(E),XP(c)
    • Vars
      • P(c);XS(D)::B(A)+P(E)
      • P(c);OGATE,P_SPINP(c),XP(E)::B(A),XP(c)
      • S(f);N_GUARD::R1(B),XP(d)
      • P(c);::B(A)+P(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).