MESON Chess Problem Database

Problem Display
PID: 196920 (7B/1r1p2q1/3n4/1p2Np2/1Ppk4/3N2R1/5P1p/2Q1Kn1B w - - 0 1)

Muller, WCAL

Tijdschrift vd NSB, 1919

7B/1r1p2q1/3n4/1p2Np2/1Ppk4/3N2R1/5P1p/2Q1Kn1B

#2

9 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5+
      • 2.Bxe5#
    • 1...Qh6
      • 2.Sc6#
    • 1...Qf8
      • 2.Sc6#
    • 1...Qg4
      • 2.Sxg4#
      • 2.Sc6#
      • 2.Sg6#
    • 1...Qg5
      • 2.Sc6#
    • 1...Qg6
      • 2.Sc6#
      • 2.Sxg6#
    • 1...Qf7
      • 2.Sc6#
      • 2.Sxf7#
    • 1...Qh7
      • 2.Sc6#
    • 1...Qg8
      • 2.Sc6#
    • 1...Se3
      • 2.fxe3#
    • 1...cxd3
      • 2.Qb2#
      • 2.Qa1#
      • 2.Qc5#
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qc3#
      • 1...Qxe5+
        • 2.Se2#
      • 1...Kxe5
        • 2.Bxg7#
      • 1...Qxg3
        • 2.Se2#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Seg6#
      • 1...Sxg3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Se4
        • 2.Sf3#
      • 1...c3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(j);CHECK,OGATE,P_SPINQ(j),XS(H)::B(I),XQ(j)
    • Q(j);::B(I)+S(H),DCHECK
    • S(a);OGATE::P(D),XS(a)
  • Actual
    • S(E);
    • Threat
      • QAB1(A)
    • Vars
      • Q(j);CHECK,P_SPINQ(j),XS(H)::S(E)
      • K(d);OGATEB,P_SPINQ(j),S_FLIGHT,XS(H)::B(I),XQ(j)
      • S(a);N_GUARD,XR(F)::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(g);SBLOCK::S(H)
      • P(c);::QAB1(A),XP(c)
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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).