MESON Chess Problem Database

Problem Display
PID: 223071 (3Q2N1/8/3n1R2/1n2kpp1/1P5N/5P2/7K/5R1B w - - 0 1)

Willis, J

Australasian (The), 1885

3Q2N1/8/3n1R2/1n2kpp1/1P5N/5P2/7K/5R1B

#2

9 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Qxd6#
    • 1...Sc3
      • 2.Qxd6#
    • 1...Sd4
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qxd6#
    • 1...Sc7
      • 2.Qxd6#
    • 1...Sc4
      • 2.Sg6#
    • 1...Se4
      • 2.Sg6#
    • 1...Sb7
      • 2.Sg6#
    • 1...Sf7
      • 2.Sg6#
    • 1...Sc8
      • 2.Sg6#
    • 1...Se8
      • 2.Sg6#
  • Keys
    • 1.Qb6!
      • 1...Kf4
        • 2.Sg6#
      • 1...Kd5
        • 2.Qc5#
      • 1...gxh4
        • 2.f4#
      • 1...Sa3
        • 2.Qxd6#
      • 1...Sc3
        • 2.Qxd6#
      • 1...Sd4
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qxd6#
      • 1...Sc7
        • 2.Qxd6#
      • 1...Sc4
        • 2.Rxf5#
      • 1...Se4
        • 2.Rxf5#
      • 1...Sb7
        • 2.Rxf5#
      • 1...Sf7
        • 2.Rxf5#
      • 1...Sc8
        • 2.Rxf5#
      • 1...Se8
        • 2.Rxf5#
      • 1...f4
        • 2.Qc5#
      • 1...g4
        • 2.f4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(H),XS(e)
    • S(e);::S(F)
  • Actual
    • Q(H);
    • Vars
      • K(b);P_SPINP(c),S_FLIGHT::S(F)
      • K(b);P-FLIGHT::QAR1(H)
      • P(d);N_GUARD,XS(F)::P(D)
      • S(a);N_GUARD::QAB1(H),XS(e)
      • S(e);N_GUARD::R1(G),XP(c)
      • P(c);::QAR2(H)
      • P(d);N_GUARD::P(D)
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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).