MESON Chess Problem Database

Problem Display
PID: 227448 (8/5Q2/pp3P2/PBkp4/5p2/K3P3/8/8 w - - 0 1)

Misera, Vaclav

Prachensky kraj, 1926

8/5Q2/pp3P2/PBkp4/5p2/K3P3/8/8

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb5
      • 2.Qxd5#
    • 1...Kd6
      • 2.Qe7#
    • 1...axb5
      • 2.Qc7#
  • Tries
    • 1.Qe6?
      • threat
        • 2.Qxb6#
        • 2.Qc6#
      • 1...Kxb5
        • 2.Qxd5#
      • 1...fxe3
        • 2.Qxb6#
      • 1...bxa5
        • 2.Qc6#
      • 1...d4
        • 2.Qe5#
        • 2.Qc6#
      • 1...axb5!
    • 1.Qd7?
      • threat
        • 2.Qc6#
      • 1...axb5
        • 2.Qc7#
      • 1...fxe3!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qc6#
        • 2.Qxb6#
      • 1...Kxb5
        • 2.Qxd5#
      • 1...Kd6
        • 2.Qe7#
      • 1...fxe3
        • 2.Qxb6#
      • 1...axb5
        • 2.Qc7#
      • 1...bxa5
        • 2.Qc6#
      • 1...d4
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,XB(D)::QAR2(F),XP(c)
    • K(b);S_FLIGHT::QAB1(F)
    • P(d);SBLOCK,XB(D)::QAR2(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT,XB(D)::QAR2(F),XP(c)
        • P(a);XP(B)::QAB1(F),XP(e)
        • P(e);XP(C)::QAR1(F)
      • Refutation
        • P(d);XB(D)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • P(d);SBLOCK,XB(D)::QAR2(F)
      • Refutation
        • P(a);XP(B)
  • Actual
    • Q(F);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(e),XB(D)::QAR2(F),XP(c)
      • K(b);S_FLIGHT::QAB1(F)
      • P(a);XP(B)::QAB1(F),XP(e)
      • P(d);SBLOCK,XB(D)::QAR2(F)
      • P(e);XP(C)::QAR1(F)
      • P(c);::QAR1(F)
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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).