MESON Chess Problem Database

Problem Display
PID: 223398 (8/2K5/2N2p1b/3k2p1/2p3P1/2p5/6P1/4Q3 w - - 0 1)

Bayer, Stanislaus

Wiener Hausfrauen-Zeitung, 1886

8/2K5/2N2p1b/3k2p1/2p3P1/2p5/6P1/4Q3

#2

5 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qf5#
      • 1...Ke4
        • 2.Qd4#
        • 2.Qf3#
      • 1...f5
        • 2.Qxf5#
      • 1...Ke6!
    • 1.Qd1+?
      • 1...Ke4
        • 2.Qf3#
        • 2.Qd4#
      • 1...Ke6
        • 2.Qd7#
      • 1...Kc5!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Qf5#
      • 1...Kxe4!
    • 1.Qe6+?
      • 1...Kc5
        • 2.Qf5#
      • 1...Kxe6!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qf5#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc5
        • 2.Qf5#
      • 1...Ke6
        • 2.Qxc4#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • P(e);::QAR2(A),XP(e)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR(A)
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR(A)
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(c);S_FLIGHT::QAB1(A)
      • K(c);P-FLIGHT::QAR(A)
      • K(c);S_FLIGHT::QAB(A),XP(b)
      • P(e);::QAR2(A),XP(e)
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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).