MESON Chess Problem Database

Problem Display
PID: 268880 (5b1B/4p3/1p4K1/3k1N2/1P3pN1/8/1P4P1/2Q5 w - - 0 1)

Parcerisa, Jose Antonio Lopez

Problemas, 2020

5b1B/4p3/1p4K1/3k1N2/1P3pN1/8/1P4P1/2Q5

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qc4#
    • 1...Ke6
      • 2.Qc6#
  • Tries
    • 1.Sge3+?
      • 1...Ke4
        • 2.Qb1#
        • 2.Qc2#
        • 2.Qc4#
      • 1...Ke6
        • 2.Qc6#
        • 2.Qc8#
      • 1...fxe3!
    • 1.Se5?
      • threat
        • 2.Qc4#
        • 2.Qc6#
      • 1...Ke4
        • 2.Qc4#
        • 2.Qc6#
      • 1...Ke6
        • 2.Qc4#
        • 2.Qc6#
      • 1...b5
        • 2.Qc6#
      • 1...Bg7!
    • 1.Sf6+?
      • 1...Ke5
        • 2.Qe1#
      • 1...Ke6
        • 2.Qe1#
      • 1...exf6!
    • 1.Qc5+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Qd4#
        • 2.Qc4#
      • 1...Ke6
        • 2.Qc6#
      • 1...bxc5!
    • 1.b3?
      • threat
        • 2.Qc4#
      • 1...Ke4
        • 2.Qc4#
      • 1...Ke6
        • 2.Qc6#
      • 1...b5!
  • Keys
    • 1.b5!
      • threat
        • 2.Qc6#
      • 1...Ke4
        • 2.Qc4#
      • 1...Ke6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::QAR2(A)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • P(a);XS(E)
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(A)
      • Refutation
        • B(e);
    • Try
      • S(E);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,S_CUTP(d)::QAR(A)
        • K(b);N_GUARD,S_CUTP(d),S_FLIGHT::QAR(A)
      • Refutation
        • P(d);XS(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • P(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
        • K(b);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • P(c);
  • Actual
    • P(D);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAR2(A)
      • K(b);S_FLIGHT::QAR2(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).