MESON Chess Problem Database

Problem Display
PID: 108187 (8/2qppK1Q/2b1R3/4bp2/1n2p3/1NRPk1P1/4pr2/4N1Bn w - - 0 1)

Belliboni, Caetano

Informal da UPB, 1980-1981

8/2qppK1Q/2b1R3/4bp2/1n2p3/1NRPk1P1/4pr2/4N1Bn

#2

9 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.d4#
    • 1...Sa6
      • 2.d4#
  • Tries
    • 1.Sc2+?
      • 1...Sxc2
        • 2.d4#
      • 1...Kf3!
    • 1.Qh5?
      • threat
        • 2.Sg2#
      • 1...Bxc3
        • 2.Qf3#
      • 1...exd3!
  • Keys
    • 1.Qxf5!
      • threat
        • 2.Sg2#
      • 1...Bxc3
        • 2.Qf3#
      • 1...exd3
        • 2.Qf4#
      • 1...Bf4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(e);N_GUARD::R(D)+P(E)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • S(e);XS(A)::R(D)+P(E)
      • Refutation
        • K(d);N_SPINR(c),P-FLIGHT
    • Try
      • Q(I);
      • Threat
        • S(A)
      • Vars
        • B(g);P_SPINP(f),XR(D)::QAR1(I)
      • Refutation
        • P(f);P_SPINB(g),P_SPINP(f),XP(E)
  • Actual
    • Q(I);P_SPINQ(I),XP(h)
    • Threat
      • S(A)
    • Vars
      • B(g);P_SPINP(f),XR(D)::QAR1(I)
      • P(f);P_SPINB(g),P_SPINP(f),XP(E)::QAB1(I)
      • B(g);N_PINQ(I),P_SPINP(f)::QAB(I)
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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).