MESON Chess Problem Database

Problem Display
PID: 180220 (8/3N4/2b5/kBR5/6Q1/1qpN4/1P1p3K/8 w - - 0 1)

Schlechter, Carl

Magyar Sakkvilag, 1912

8/3N4/2b5/kBR5/6Q1/1qpN4/1P1p3K/8

#2

7 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qb4#
      • 2.b4#
    • 1...Qa2
      • 2.Qb4#
      • 2.b4#
    • 1...Qc2
      • 2.Qb4#
      • 2.b4#
    • 1...Qa4
      • 2.Qxa4#
    • 1...Qd5
      • 2.Qa4#
      • 2.Qb4#
      • 2.b4#
    • 1...Qe6
      • 2.Qa4#
      • 2.Qb4#
      • 2.b4#
    • 1...Qf7
      • 2.Qa4#
      • 2.Qb4#
      • 2.b4#
    • 1...Qg8
      • 2.Qa4#
      • 2.Qb4#
      • 2.b4#
    • 1...Qxb2
      • 2.Qa4#
    • 1...Qb4
      • 2.Qxb4#
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qd8#
      • 1...Qxg8
        • 2.b4#
      • 1...Qxb5
        • 2.Qa2#
      • 1...Bxb5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD::QAR1(D),XQ(b)
    • Q(b);N_GUARD,XP(A)::QAR1(D)
    • Q(b);N_GUARD::QAB1(D),XQ(b)
  • Actual
    • Q(D);
    • Threat
      • QAB(D)
    • Vars
      • Q(b);OGATE,XQ(D)::P(A)
      • Q(b);OGATE,P_SPINQ(b),XB(E)::QAR(D)
      • B(e);N_GUARD,P_SPINB(e),XB(E)::QAR(D)
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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).