MESON Chess Problem Database

Problem Display
PID: 194865 (8/6Q1/1p6/2p3N1/5n1n/3b4/6pp/4K1kr w - - 0 1)

Formanek, Z

Deutsches Wochenschach, 1918

8/6Q1/1p6/2p3N1/5n1n/3b4/6pp/4K1kr

#2

3 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Sh3#
    • 1...Sh3
      • 2.Sxh3#
    • 1...Sd5
      • 2.Sh3#
    • 1...Sh5
      • 2.Sh3#
    • 1...Se6
      • 2.Sh3#
    • 1...Sfg6
      • 2.Sh3#
    • 1...Sf3+
      • 2.Sxf3#
    • 1...Sf5
      • 2.Sf3#
    • 1...Shg6
      • 2.Sf3#
    • 1...c4
      • 2.Qd4#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qe3#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Sh3
        • 2.Sxh3#
      • 1...Sd5
        • 2.Sh3#
      • 1...Sf5
        • 2.Sf3#
      • 1...Be4!
    • 1.Qe7?
      • threat
        • 2.Qe3#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Sh3
        • 2.Sxh3#
      • 1...Sd5
        • 2.Sh3#
      • 1...Se6
        • 2.Sh3#
      • 1...Sf5
        • 2.Sf3#
      • 1...Be4!
  • Keys
    • 1.Qc3!
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Bb1
        • 2.Qe3#
      • 1...Bf1
        • 2.Qe3#
      • 1...Bc2
        • 2.Qe3#
      • 1...Be2
        • 2.Qe3#
      • 1...Bc4
        • 2.Qe3#
      • 1...Be4
        • 2.Qe3#
      • 1...Bb5
        • 2.Qe3#
      • 1...Bf5
        • 2.Qe3#
      • 1...Ba6
        • 2.Qe3#
      • 1...Bg6
        • 2.Qe3#
      • 1...Bh7
        • 2.Qe3#
      • 1...Se2
        • 2.Sh3#
      • 1...Sh3
        • 2.Sxh3#
      • 1...Sd5
        • 2.Sh3#
      • 1...Sh5
        • 2.Sh3#
      • 1...Se6
        • 2.Sh3#
      • 1...Sfg6
        • 2.Sh3#
      • 1...Sf5
        • 2.Sf3#
      • 1...Shg6
        • 2.Sf3#
      • 1...c4
        • 2.Qd4#
      • 1...b5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::S(B)
    • S(f);N_GUARD::S(B),XS(f)
    • S(g);CHECK,N_GUARD::S(B),XS(g)
    • S(g);N_GUARD::S(B)
    • P(h);N_GUARD::QAB(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • S(g);CHECK,N_GUARD::S(B),XS(g)
        • S(f);N_GUARD::S(B),XS(f)
        • S(f);N_GUARD::S(B)
        • S(g);N_GUARD::S(B)
      • Refutation
        • B(e);
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • S(g);CHECK,N_GUARD::S(B),XS(g)
        • S(f);N_GUARD::S(B),XS(f)
        • S(f);N_GUARD::S(B)
        • S(g);N_GUARD::S(B)
      • Refutation
        • B(e);
  • Actual
    • Q(C);
    • Vars
      • S(g);CHECK,N_GUARD::S(B),XS(g)
      • B(e);OGATE::QAB(C)
      • S(f);N_GUARD::S(B)
      • S(f);N_GUARD::S(B),XS(f)
      • S(g);N_GUARD::S(B)
      • P(h);N_GUARD::QAB(C)
      • P(i);N_GUARD::QAB(C),XP(h)
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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).