MESON Chess Problem Database

Problem Display
PID: 262722 (nQ6/1KR1pN2/4ppP1/2p1N2p/5kPP/8/5B2/7B w - - 0 1)

Atayants, Grigory Sergeevich

2nd Prize, SuperProblem, 2018

nQ6/1KR1pN2/4ppP1/2p1N2p/5kPP/8/5B2/7B

#2

10 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Rxc4#
  • Tries
    • 1.Rxc5?
      • threat
        • 2.Rc4#
      • 1...hxg4
        • 2.Sd3#
      • 1...Sb6!
    • 1.Qf8?
      • threat
        • 2.Qh6#
      • 1...fxe5
        • 2.Sh6#
      • 1...hxg4!
  • Keys
    • 1.Sh6!
      • threat
        • 2.Sd3#
      • 1...Kxe5
        • 2.Rxc5#
      • 1...fxe5
        • 2.Qf8#
      • 1...c4
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE::R(H),XP(b)
  • Tries
    • Try
      • R(H);XP(b)
      • Threat
        • R(H)
      • Vars
        • P(c);SBLOCK,XP(C)::QAB(J)+S(E),DCHECK
      • Refutation
        • S(g);
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • P(e);SBLOCK,XS(E)::QAR(J)+S(I)
      • Refutation
        • P(c);XP(C)
  • Actual
    • S(I);
    • Threat
      • S(E)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(E)::QAB(J)+R(H),DCHECK,XP(b)
      • P(e);OGATEB,SBLOCK,XS(E)::QAR(J)
      • P(b);OGATE::R(H),XP(b)
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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).