MESON Chess Problem Database

Problem Display
PID: 263173 (8/8/6Q1/8/8/8/3KRN2/5kbn w - - 0 1)

Abdullayev, Suleyman

SuperProblem, 2021

8/8/6Q1/8/8/8/3KRN2/5kbn

#2

4 + 3

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf2
      • 2.Re1#
  • Tries
    • 1.Sxh1?
      • threat
        • 2.Sg3#
        • 2.Re1#
        • 2.Qb1#
        • 2.Qg2#
      • 1...Bf2
        • 2.Rxf2#
      • 1...Bh2
        • 2.Re1#
        • 2.Rf2#
        • 2.Qb1#
        • 2.Qg2#
      • 1...Bd4
        • 2.Re1#
        • 2.Qb1#
        • 2.Qg2#
      • 1...Bc5
        • 2.Re1#
        • 2.Qb1#
        • 2.Qg2#
      • 1...Bb6
        • 2.Re1#
        • 2.Qb1#
        • 2.Qg2#
      • 1...Ba7
        • 2.Re1#
        • 2.Qb1#
        • 2.Qg2#
      • 1...Be3+!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qb1#
      • 1...Be3+
        • 2.Sxe3#
      • 1...Bf2
        • 2.Sh2#
      • 1...Sf2
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK,XS(C)::R1(B)
  • Tries
    • Try
      • S(C);XS(c)
      • Threat
        • DUALS(4)
      • Vars
        • B(b);N_GUARD::R1(B),XB(b)
      • Refutation
        • B(b);CHECK
  • Actual
    • S(C);
    • Threat
      • QAR(D)
    • Vars
      • B(b);CHECK,N_GUARD::S(C),XB(b)
      • B(b);N_GUARD::S(C)
      • S(c);S_CUTB(b)::S(C)
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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).