MESON Chess Problem Database

Problem Display
PID: 121290 (1B3nK1/5Qp1/3P4/3Pk1p1/2P1pRpN/8/8/5q1b w - - 0 1)

Schiffer, Vincenz

La Strategie, 1900

1B3nK1/5Qp1/3P4/3Pk1p1/2P1pRpN/8/8/5q1b

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qf5#
      • 2.d7#
    • 1...gxf4
      • 2.Qxg7#
    • 1...g6
      • 2.Qf6#
  • Keys
    • 1.Qa7!
      • threat
        • 2.d7#
      • 1...Kxf4
        • 2.d7#
      • 1...Qxc4
        • 2.Rf5#
      • 1...Qxf4
        • 2.Qa1#
      • 1...gxf4
        • 2.Qxg7#
      • 1...Qb1
        • 2.Rf5#
      • 1...Se6
        • 2.Sg6#
      • 1...Sd7
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • P(f);SBLOCK,XR(B)::QAB(F),XP(g)
    • P(g);N_GUARD::QAB1(F)
  • Actual
    • Q(F);
    • Threat
      • B(G)+P(E)
    • Vars
      • K(e);S_FLIGHT,XR(B)::B(G)+P(E)
      • Q(a);N_GUARD,P_PINP(D),XP(A)::R1(B)
      • Q(a);N_GUARD,SBLOCK,XR(B)::QAB(F)
      • P(f);SBLOCK,XR(B)::QAB(F),XP(g)
      • Q(a);N_GUARD::R1(B)
      • S(h);N_GUARD::S(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).