MESON Chess Problem Database

Problem Display
PID: 109673 (8/5p2/3P3p/5k1b/2pK2RP/2B5/Q3N1P1/8 w - - 0 1)

Walcott, George H

Checkmate, 1901

8/5p2/3P3p/5k1b/2pK2RP/2B5/Q3N1P1/8

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qb1+?
      • 1...Kxg4
        • 2.Qe4#
      • 1...Kf6
        • 2.Kd5#
      • 1...Ke6!
    • 1.Qc2+?
      • 1...Kxg4
        • 2.Qe4#
      • 1...Kf6
        • 2.Kd5#
      • 1...Ke6!
  • Keys
    • 1.Qxc4!
      • 1...Kxg4
        • 2.Ke5#
      • 1...Kf6
        • 2.Ke4#
      • 1...Bxg4
        • 2.Qxf7#
      • 1...Bg6
        • 2.Rf4#
      • 1...f6
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(F)::QAR2(A)
        • K(b);P-FLIGHT::B(D)+K(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(F)::QAR2(A)
        • K(b);P-FLIGHT::B(D)+K(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);XP(a)
    • Vars
      • K(b);S_FLIGHT,XR(F)::QAR(A)+K(E)
      • K(b);P-FLIGHT::B(D)+K(E)
      • B(c);N_GUARD,SBLOCK,XR(F)::QAR2(A),XP(e)
      • B(c);SBLOCK::R1(F)
      • P(e);SBLOCK::QAB(A)
HTML5 logo

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).