MESON Chess Problem Database

Problem Display
PID: 263134 (K6R/3P2P1/4N1pp/7k/3p4/4bPP1/7r/3n1n1R w - - 0 1)

Mlynka, Karol

2nd Prize, SuperProblem, 2021

K6R/3P2P1/4N1pp/7k/3p4/4bPP1/7r/3n1n1R

#2

8 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rh3
      • 2.Rxh3#
    • 1...Rh4
      • 2.Rxh4#
      • 2.g4#
    • 1...Sd2
      • 2.Rxh2#
    • 1...Sxg3
      • 2.Rxh2#
  • Tries
    • 1.d8Q?
      • threat
        • 2.g4#
      • 1...Sxg3
        • 2.Rxh2#
      • 1...g5
        • 2.Qe8#
      • 1...Bg5
        • 2.Qxg5#
      • 1...Sf2!
  • Keys
    • 1.g8S!
      • threat
        • 2.Sf6#
      • 1...Sxg3
        • 2.Rxh2#
      • 1...g5
        • 2.Rxh6#
      • 1...Bg5
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(c);OGATE::R(A),XR(c)
    • S(b);N_GUARD::R(A),XR(c)
    • S(b);N_GUARD,XP(C)::R(A),XR(c)
  • Tries
    • Try
      • P(E);
      • Threat
        • P(C)
      • Vars
        • S(b);N_GUARD,XP(C)::R(A),XR(c)
        • P(g);OGATEB::QAB(E)
        • B(d);N_GUARD::QAR1(E),XB(d)
      • Refutation
        • S(a);
  • Actual
    • P(F);
    • Threat
      • S(F)
    • Vars
      • S(b);N_GUARD,XP(C)::R(A),XR(c)
      • P(g);S_CUTB(d)::R1(H),XP(h)
      • B(d);SBLOCK::S(D)
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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).