MESON Chess Problem Database

Problem Display
PID: 228255 (R7/8/1K1p1Q2/3Pp3/1k2nN1R/2pn3B/P1P5/8 w - - 0 1)

Howard, David M

Problem Observer, 2019

R7/8/1K1p1Q2/3Pp3/1k2nN1R/2pn3B/P1P5/8

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Sxd3#
    • 1...Sf2
      • 2.Sxd3#
    • 1...Sg3
      • 2.Sxd3#
    • 1...Sc5
      • 2.Sxd3#
    • 1...Sg5
      • 2.Sxd3#
    • 1...Sxf6
      • 2.Sxd3#
    • 1...exf4
      • 2.Qd4#
  • Keys
    • 1.Bf1!
      • 1...Kc4
        • 2.Ra4#
      • 1...Sxf4
        • 2.a3#
      • 1...Sxf6
        • 2.Sxd3#
      • 1...exf4
        • 2.Qd4#
      • 1...Sb2
        • 2.a3#
      • 1...Sc1
        • 2.a3#
      • 1...Se1
        • 2.a3#
      • 1...Sdf2
        • 2.a3#
      • 1...Sdc5
        • 2.a3#
      • 1...Sd2
        • 2.Sxd3#
      • 1...Sef2
        • 2.Sxd3#
      • 1...Sg3
        • 2.Sxd3#
      • 1...Sec5
        • 2.Sxd3#
      • 1...Sg5
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(d);::R(E)+S(D),DCHECK,XS(b)
    • S(d);XQ(H)::R(E)+S(D),DCHECK,XS(b)
    • P(e);OGATE,XS(D)::QAR2(H)
  • Actual
    • B(C);
    • Vars
      • K(c);P-FLIGHT,P_SPINS(b)::R(I)
      • S(b);XS(D)::P(A)
      • S(d);XQ(H)::R(E)+S(D),DCHECK,XS(b)
      • P(e);OGATE,XS(D)::QAR2(H)
      • S(b);::P(A)
      • S(d);::R(E)+S(D),DCHECK,XS(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).