MESON Chess Problem Database

Problem Display
PID: 2842 (4n3/1p2K3/1P6/4kp2/1N2p3/8/3Q4/8 w - - 0 1)

Decker, Adolfph L

Source?, 1889

4n3/1p2K3/1P6/4kp2/1N2p3/8/3Q4/8

#2

4 + 5

2681 All Change Here! 1919
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sf6
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
    • 1...Sg7
      • 2.Qd6#
    • 1...e3
      • 2.Qxe3#
    • 1...f4
      • 2.Qd5#
  • Keys
    • 1.Sc2!
      • 1...e3
        • 2.Qd4#
      • 1...f4
        • 2.Qa5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sf6
        • 2.Qd6#
      • 1...Sc7
        • 2.Qd6#
      • 1...Sg7
        • 2.Qd6#

This anticipates 206473(1925)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::QAB1(A),XS(e)
    • S(e);N_GUARD::QAB1(A)
    • P(a);OGATEB::QAR2(A),XP(a)
    • P(c);SBLOCK::QAR1(A)
  • Actual
    • S(B);
    • Vars
      • P(a);::QAB1(A)
      • P(c);SBLOCK::QAR(A)
      • S(e);N_GUARD::QAB1(A),XS(e)
      • S(e);N_GUARD::QAB1(A)
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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).