MESON Chess Problem Database

Problem Display
PID: 5102 (8/4K3/3N4/6Q1/3k3B/P7/2P5/8 w - - 0 1)

Colpa, Johannes J

Tijdschrift vd NSB, 1899

8/4K3/3N4/6Q1/3k3B/P7/2P5/8

#2

6 + 1

4883 Still More Fun with Chess Miniatures 2002
102 Probleemblad 2003
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • 1...Kc4
        • 2.Qc5#
      • 1...Kxe4!
    • 1.Qd2+?
      • 1...Ke5
        • 2.Bg3#
        • 2.Bf6#
      • 1...Kc5!
    • 1.Qf5?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc3!
  • Keys
    • 1.Qg2!
      • 1...Kc3
        • 2.Bf6#
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.Bf2#
      • 1...Ke5
        • 2.Qe4#

Anticipated by 2475(0000)

This anticipates 223485(1926), 140936(1980/I), 164208(1988), 124491(1998), 104591(1999), 169618(2002), 79157(2004), 168594(2005), 153216(2011)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::B(C)
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAR1(D)
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).