MESON Chess Problem Database

Problem Display
PID: 121014 (3B4/5B2/7Q/8/1p1kp3/8/p4P2/K7 w - - 0 1)

Wheeler, Charles Henry

Checkmate, 1901

3B4/5B2/7Q/8/1p1kp3/8/p4P2/K7

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qb6#
    • 1...Ke5
      • 2.Qf6#
    • 1...e3
      • 2.Qxe3#
  • Tries
    • 1.Qd2+?
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5!
    • 1.Qf6+?
      • 1...Kc5
        • 2.Qb6#
      • 1...Kd3!
  • Keys
    • 1.Bb3!
      • 1...Kc3
        • 2.Qe3#
      • 1...Kd3
        • 2.Qe3#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qf6#
      • 1...e3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(C)
    • P(d);::QAB1(C),XP(d)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(c);S_FLIGHT::QAR2(C)
      • K(c);P-FLIGHT::QAR1(C)
      • K(c);S_FLIGHT::QAB1(C)
      • P(d);::QAB1(C),XP(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).