MESON Chess Problem Database

Problem Display
PID: 107126 (2Q1BB2/pP6/p2N3R/kn6/3p4/P1p5/2P4K/5b2 w - - 0 1)

Belliboni, Caetano

Xadrez Brasileiro, 1945

2Q1BB2/pP6/p2N3R/kn6/3p4/P1p5/2P4K/5b2

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb6
      • 2.Sc4#
    • 1...Sxd6
      • 2.Qc7#
      • 2.Qd8#
    • 1...Sc7
      • 2.Qxc7#
  • Tries
    • 1.Sc4+?
      • 1...Ka4
        • 2.Rxa6#
      • 1...Bxc4!
    • 1.Qd8+?
      • 1...Sc7
        • 2.Qxc7#
      • 1...Ka4!
  • Keys
    • 1.b8S!
      • threat
        • 2.Qxa6#
      • 1...Ka4
        • 2.Qxa6#
      • 1...Kb6
        • 2.Sc4#
      • 1...Sxa3
        • 2.Sb7#
      • 1...Sxd6
        • 2.Qc7#
        • 2.Qd8#
      • 1...Sc7
        • 2.Sb7#
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(d);S_FLIGHT::R(E)+S(D),DCHECK
    • S(e);N_GUARD::QAB(G),XS(e)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINS(e)::R(E),XP(f)
      • Refutation
        • B(a);XS(D)
    • Try
      • Q(G);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAB(G),XS(e)
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(e)
  • Actual
    • P(F);
    • Threat
      • QAR1(G),XP(f)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(e)::QAR2(G),XP(f)
      • K(d);S_FLIGHT::R(E)+S(D),DCHECK
      • S(e);XP(C)::S(D)
HTML5 logo

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).