MESON Chess Problem Database

Problem Display
PID: 181843 (8/3B4/3n4/3k1N2/2p2PK1/3p4/3Q4/8 w - - 0 1)

Veiga, Alberto

Diario Illustrado, 1905

8/3B4/3n4/3k1N2/2p2PK1/3p4/3Q4/8

#2

5 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bc6#
      • 2.Qg2#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Ke4
        • 2.Bc6#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Sxf5
        • 2.Qe5#
      • 1...Sb5
        • 2.Qe5#
      • 1...Sf7
        • 2.Qd4#
      • 1...Kc5!
    • 1.Qa5+?
      • 1...Ke4
        • 2.Bc6#
        • 2.Qe5#
      • 1...Sb5!
    • 1.Qxd3+?
      • 1...Kc5
        • 2.Qxd6#
      • 1...cxd3!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Se7#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Sxf5
        • 2.Qe5#
      • 1...c3
        • 2.Qd4#
      • 1...Se4
        • 2.Qd4#
      • 1...Sb5
        • 2.Qe5#
      • 1...Sb7
        • 2.Qd4#
        • 2.Qe5#
      • 1...Sf7
        • 2.Qd4#
      • 1...Sc8
        • 2.Qd4#
        • 2.Qe5#
      • 1...Se8
        • 2.Qd4#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);XS(D)::QAR1(A)
        • S(d);::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • Q(A);CHECK,XP(a)
      • Vars
        • K(c);OGATE,P-FLIGHT::QAB1(A),XS(d)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • DUALS(3)
    • Vars
      • S(d);XS(D)::QAR1(A)
      • P(b);::QAR1(A)
      • S(d);::QAR1(A)
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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).