MESON Chess Problem Database

Problem Display
PID: 265782 (1Q1R4/2p5/5p2/2r1kPp1/5pK1/1b6/1b1nPN2/8 w - - 0 1)

Gajevskis, A

Sachmatija, 2022

1Q1R4/2p5/5p2/2r1kPp1/5pK1/1b6/1b1nPN2/8

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Qxc7#
    • 1...Rb5
      • 2.Qxc7#
    • 1...Bc4
      • 2.Qxb2#
    • 1...Se4
      • 2.Sd3#
  • Keys
    • 1.Qb4!
      • threat
        • 2.Sd3#
      • 1...Rc3
        • 2.Qd4#
      • 1...Rc4
        • 2.Qe7#
      • 1...Rd5
        • 2.Re8#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bc2
        • 2.Qxc5#
      • 1...Bc4
        • 2.Qxb2#
      • 1...Sc4
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • R(e);N_GUARD::QAB(E),XP(i)
    • B(c);OGATE::QAB(E),XB(a)
    • S(b);SBLOCK::S(B)
  • Actual
    • Q(E);N_PINP(i)
    • Threat
      • S(B)
    • Vars
      • R(e);S_CUTB(a)::QAB1(E)
      • R(e);OGATE::QAR2(E)
      • R(e);SBLOCK,S_CUTB(c)::R(F)
      • B(a);N_GUARD::QAB1(E),XB(a)
      • B(c);N_GUARD::QAR2(E),XR(e)
      • B(c);OGATE::QAB(E),XB(a)
      • S(b);S_CUTB(c)::QAR2(E),XR(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).