MESON Chess Problem Database

Problem Display
PID: 214917 (3r4/5N1p/5Qp1/3q3k/8/4nP2/6P1/4N1K1 w - - 0 1)

Blumenberg, Marc A

Baltimore American and Commercial Advertiser, 1880

3r4/5N1p/5Qp1/3q3k/8/4nP2/6P1/4N1K1

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Qg5#
    • 1...Qb3
      • 2.Qg5#
    • 1...Qxf3
      • 2.Qg5#
    • 1...Qc4
      • 2.Qg5#
    • 1...Qe4
      • 2.Qg5#
    • 1...Qc6
      • 2.Qg5#
    • 1...Qe6
      • 2.Qg5#
    • 1...Qb7
      • 2.Qg5#
    • 1...Qa8
      • 2.Qg5#
    • 1...Qd1
      • 2.Qg5#
    • 1...Qd2
      • 2.Qg5#
    • 1...Qd3
      • 2.Qg5#
    • 1...Qd4
      • 2.Qg5#
    • 1...Qg5
      • 2.Qxg5#
    • 1...Qd6
      • 2.Qg5#
    • 1...Qd7
      • 2.Qg5#
    • 1...Sd1
      • 2.g4#
    • 1...Sf1
      • 2.g4#
    • 1...Sc2
      • 2.g4#
    • 1...Sc4
      • 2.g4#
    • 1...Sf5
      • 2.Qg5#
      • 2.g4#
    • 1...g5
      • 2.Qh6#
  • Keys
    • 1.g3!
      • threat
        • 2.Qh4#
      • 1...Qc4
        • 2.Qg5#
      • 1...Qe4
        • 2.Qg5#
      • 1...Qd4
        • 2.Qg5#
      • 1...Qg5
        • 2.Qxg5#
      • 1...Sg2
        • 2.g4#
      • 1...Sf5
        • 2.Qg5#
        • 2.g4#
      • 1...g5
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 16
  • Sets
    • Q(b);N_GUARD::QAR1(E)
    • Q(b);N_GUARD,XP(D)::QAR1(E)
    • Q(b);N_GUARD,P_PINS(A)::QAR1(E)
    • Q(b);N_GUARD,P_PINP(C)::QAR1(E),XQ(b)
    • S(a);N_GUARD::P(C)
    • P(d);OGATE::QAR1(E)
  • Actual
    • P(C);
    • Threat
      • QAR1(E)
    • Vars
      • Q(b);N_GUARD::QAR1(E)
      • Q(b);N_GUARD,P_PINP(C)::QAR1(E),XQ(b)
      • S(a);N_GUARD::P(C)
      • P(d);OGATE::QAR1(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).