MESON Chess Problem Database

Problem Display
PID: 263164 (n1N1R2K/3p4/3p1P2/1PBkp3/2pPr3/2Q5/bp6/2b1n2B w - - 0 1)

Gorbatenko, Yuri Grigorevich

SuperProblem, 2021

n1N1R2K/3p4/3p1P2/1PBkp3/2pPr3/2Q5/bp6/2b1n2B

#2

9 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Sxb6#
    • 1...Sc7
      • 2.Sb6#
    • 1...exd4
      • 2.Qxd4#
    • 1...dxc5
      • 2.Rxe5#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qg8#
      • 1...exd4
        • 2.Qxd6#
      • 1...dxc5
        • 2.Qxe5#
      • 1...Sc7
        • 2.Sb6#
      • 1...Bg5!
    • 1.Qh3?
      • threat
        • 2.Se7#
      • 1...exd4
        • 2.Qf5#
      • 1...dxc5
        • 2.Qxd7#
      • 1...c3!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qxa8#
      • 1...exd4
        • 2.Bxe4#
      • 1...dxc5
        • 2.Qxc5#
      • 1...c3
        • 2.Qxa2#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sc7
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(k);N_GUARD::S(G),XS(k)
    • S(k);N_GUARD::S(G)
    • P(h);OGATE,XP(C)::QAR1(B),XP(h)
    • P(i);N_GUARD,XB(E)::R1(H),XP(h)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • P(h);OGATE,XP(C)::QAR1(B),XP(i)
        • P(i);N_GUARD,XB(E)::QAR1(B),XP(h)
        • S(k);N_GUARD::S(G)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • S(G)
      • Vars
        • P(h);OGATEB,XP(C)::QAR2(B)
        • P(i);OGATEB,XB(E)::QAR2(B),XP(j)
      • Refutation
        • P(e);
  • Actual
    • Q(B);
    • Threat
      • QAB(B),XS(k)
    • Vars
      • P(h);XP(C)::B(A),XR(f)
      • P(i);OGATE,XB(E)::QAR1(B),XP(i)
      • P(e);OGATEB::QAB(B),XB(c)
      • S(k);N_GUARD::S(G),XS(k)
      • S(k);N_GUARD::S(G)
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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).