MESON Chess Problem Database

Problem Display
PID: 223429 (8/1K1p4/1P1B1p2/1N1k1B1p/P1N4P/4pp1Q/1b1pP2p/5n2 w - - 0 1)

Gossrau, F

Bruderschaft, 1886

8/1K1p4/1P1B1p2/1N1k1B1p/P1N4P/4pp1Q/1b1pP2p/5n2

#2

10 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Sxe3#
  • Tries
    • 1.Be4+?
      • 1...Kxe4
        • 2.Qxf3#
      • 1...Kxc4!
    • 1.Be6+?
      • 1...Ke4
        • 2.Qf5#
        • 2.Qxf3#
      • 1...dxe6!
    • 1.Qg2?
      • threat
        • 2.Qg8#
      • 1...Kxc4
        • 2.Qg8#
      • 1...Sg3
        • 2.Sxe3#
      • 1...fxg2!
    • 1.Qg4?
      • threat
        • 2.Sc7#
        • 2.Qe4#
        • 2.Qg8#
      • 1...Bd4
        • 2.Qxd4#
        • 2.Qg8#
      • 1...Sg3
        • 2.Sxe3#
        • 2.Sc7#
        • 2.Qg8#
      • 1...hxg4!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qg8#
      • 1...Kxc4
        • 2.Qg8#
      • 1...Sxg3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(D),XP(e)
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • K(g);S_FLIGHT,XB(G)::QAB1(B),XP(f)
      • Refutation
        • K(g);S_FLIGHT,XS(D)
    • Try
      • B(G);CHECK
      • Refutation
        • P(j);XB(G)
    • Try
      • Q(B);P_PINP(f)
      • Threat
        • QAB(B)
      • Vars
        • K(g);N_SPINP(f),S_FLIGHT,XS(D)::QAB(B)
        • S(a);N_GUARD::S(D),XP(e)
      • Refutation
        • P(f);N_SPINP(f),XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Refutation
        • P(h);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • K(g);S_FLIGHT,XS(D)::QAB(B)
      • S(a);N_GUARD,XQ(B)::S(D),XP(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).