MESON Chess Problem Database

Problem Display
PID: 182266 (b1N3r1/5q1p/N1R1P3/1p1k4/3p1PP1/5K1Q/n6p/7n w - - 0 1)

Markx, BJM

4th Prize, Western Daily Mercury, 1906

b1N3r1/5q1p/N1R1P3/1p1k4/3p1PP1/5K1Q/n6p/7n

#2

8 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Se7#
    • 1...Qxe6
      • 2.Rc5#
    • 1...Qg6
      • 2.Se7#
    • 1...Qf5
      • 2.Se7#
    • 1...Qe7
      • 2.Sxe7#
    • 1...Sc1
      • 2.Sb4#
    • 1...Sc3
      • 2.Sb4#
    • 1...Sb4
      • 2.Sxb4#
  • Keys
    • 1.Qg2!
      • threat
        • 2.Ke2#
      • 1...Qxf4+
        • 2.Kxf4#
      • 1...Kxc6
        • 2.Ke2#
      • 1...Qxe6
        • 2.Rc5#
      • 1...Rxg4
        • 2.Kxg4#
      • 1...Bxc6
        • 2.Qxa2#
      • 1...d3
        • 2.Ke3#
      • 1...Qg6
        • 2.Se7#
      • 1...Qf5
        • 2.Se7#
      • 1...Sf2
        • 2.Kxf2#
      • 1...Sg3
        • 2.Kxg3#
      • 1...Sc1
        • 2.Sb4#
      • 1...Sc3
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD,N_PINP(C),P_PINP(D)::S(H)
    • Q(g);N_PINP(C),SBLOCK,XP(G)::R1(F)
    • Q(g);N_GUARD,N_PINP(C)::S(H)
    • Q(g);N_GUARD::S(H)
    • Q(g);N_GUARD,N_PINP(C)::S(H),XQ(g)
    • S(b);N_GUARD::S(E)
    • S(b);N_GUARD::S(E),XS(b)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)+K(A)
    • Vars
      • Q(g);CHECK,XP(C)::QAB(B)+K(A),XQ(g)
      • K(f);S_FLIGHT,XR(F)::QAB(B)+K(A)
      • Q(g);N_PINP(C),SBLOCK,XP(G)::R1(F)
      • R(j);XP(D)::QAB(B)+K(A),XR(j)
      • B(i);SBLOCK,XR(F)::QAB(B),XS(b)
      • P(d);::QAB(B)+K(A)
      • Q(g);N_GUARD,N_PINP(C)::S(H)
      • Q(g);N_GUARD::S(H)
      • S(a);::QAB(B)+K(A),XS(a)
      • S(b);N_GUARD::S(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).