MESON Chess Problem Database

Problem Display
PID: 121448 (8/3B2p1/6K1/2Pkp3/3p4/8/1NQ5/8 w - - 0 1)

von Gottschall, Hermann

Bohemia, 1911

8/3B2p1/6K1/2Pkp3/3p4/8/1NQ5/8

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qc4#
  • Tries
    • 1.Kxg7?
      • 1...d3
        • 2.Qc4#
      • 1...e4!
    • 1.Sd3?
      • threat
        • 2.Sb4#
      • 1...e4
        • 2.Qb3#
        • 2.Qa2#
      • 1...Ke4!
    • 1.Sa4?
      • threat
        • 2.Sb6#
      • 1...d3
        • 2.Qxd3#
      • 1...e4!
    • 1.Qg2+?
      • 1...e4
        • 2.Qg5#
      • 1...Kxc5!
  • Keys
    • 1.Qc1!
      • 1...Ke4
        • 2.Bc6#
      • 1...d3
        • 2.Qc4#
      • 1...e4
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);::QAB1(B)
  • Tries
    • Try
      • K(D);P-FLIGHT,XP(d)
      • Vars
        • P(a);::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • S(A);
      • Threat
        • S(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • P(a);OGATEB::QAR2(B),XP(a)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK::QAR(B)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::B(E)
      • P(a);::QAB1(B)
      • P(c);OGATEB,SBLOCK::QAR(B)
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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).