MESON Chess Problem Database

Problem Display
PID: 169133 (8/3B2n1/3p4/1Qpk4/3P4/5K2/b7/B7 w - - 0 1)

Permyakov, Evgeni Nikolaevich

2nd Place, SuperProblem 006. TT, 2012

8/3B2n1/3p4/1Qpk4/3P4/5K2/b7/B7

#2

5 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Qc6#
      • 2.Qb7#
    • 1...Se6
      • 2.Bc6#
  • Tries
    • 1.Qb3+?
      • 1...c4
        • 2.Qb5#
        • 2.Qb7#
      • 1...Bxb3!
  • Keys
    • 1.dxc5!
      • threat
        • 2.c6#
      • 1...dxc5
        • 2.Qd3#
      • 1...Bc4
        • 2.Qc6#
      • 1...Se6
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK::B(E)
  • Tries
    • Try
      • Q(D);CHECK,N_PINP(b)
      • Refutation
        • B(a);XQ(D)
  • Actual
    • P(C);XP(b)
    • Threat
      • QAR(D)+P(C)
    • Vars
      • P(d);P_SPINP(d),SBLOCK,XP(C)::QAR2(D)
      • B(a);SBLOCK::QAB1(D)
      • S(e);SBLOCK::B(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).