MESON Chess Problem Database

Problem Display
PID: 182244 (2B1Q3/K3p3/3kp3/8/5R2/8/8/8 w - - 0 1)

Fraisse, A

La Strategie, 1906

2B1Q3/K3p3/3kp3/8/5R2/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc7
      • 2.Qd7#
  • Tries
    • 1.Qb5?
      • 1...Kc7
        • 2.Qd7#
      • 1...e5!
    • 1.Qd7+?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc5!
  • Keys
    • 1.Bb7!
      • 1...Kc5
        • 2.Qc6#
      • 1...Ke5
        • 2.Qb8#
      • 1...Kc7
        • 2.Qxe7#
      • 1...e5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(D)
  • Tries
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • P(b);
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);S_FLIGHT::QAB(D)
      • K(a);S_FLIGHT::QAR2(D),XP(c)
      • P(b);SBLOCK::QAR1(D)
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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).