MESON Chess Problem Database

Problem Display
PID: 169967 (k2rN3/p7/Q7/3N4/2K5/8/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2017

k2rN3/p7/Q7/3N4/2K5/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Qc8#
    • 1...Rd6
      • 2.Qc8#
    • 1...Rd7
      • 2.Qc8#
    • 1...Rb8
      • 2.Sdc7#
      • 2.Sec7#
    • 1...Rc8+
      • 2.Qxc8#
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qb7#
      • 1...Rc8+
        • 2.Qxc8#
      • 1...Kb8
        • 2.Qb7#
      • 1...Rxd6
        • 2.Qc8#
      • 1...Rd7
        • 2.Qc8#
      • 1...Rb8
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD,XS(B)::QAR2(C)
    • R(c);N_GUARD::QAR2(C)
    • R(c);CHECK,N_GUARD::QAR2(C),XR(c)
  • Actual
    • S(D);
    • Threat
      • QAB1(C)
    • Vars
      • R(c);CHECK,N_GUARD::QAR2(C),XR(c)
      • K(b);N_SPINP(a),P-FLIGHT::QAR1(C)
      • R(c);N_GUARD,XS(D)::QAR2(C)
      • R(c);N_GUARD::QAR2(C)
      • R(c);SBLOCK::S(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).