MESON Chess Problem Database

Problem Display
PID: 224271 (8/4pB2/1b2P3/QP1kB3/2N5/n3p1K1/2R1R1n1/8 w - - 0 1)

Phelps, Francis Bradley

The Sunny South, 1887

8/4pB2/1b2P3/QP1kB3/2N5/n3p1K1/2R1R1n1/8

#2

9 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Qa8#
  • Keys
    • 1.Qd2+!
      • 1...Ke4
        • 2.Bg6#
      • 1...Kc5
        • 2.Sxa3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...exd2
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(e);SBLOCK::QAB(E)
  • Actual
    • Q(E);CHECK
    • Vars
      • K(d);P_SPINP(c),S_FLIGHT::B(I)
      • K(d);P-FLIGHT::R(A)+S(D),XS(b)
      • B(e);N_GUARD,P_SPINB(e)::QAR1(E),XB(e)
      • P(c);XQ(E)::S(D),XB(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).