MESON Chess Problem Database

Problem Display
PID: 4507 (4B3/8/4Q3/3NpN2/4k3/8/8/4K3 w - - 0 1)

Carpenter, George Edward

Dubuque Chess Journal, 1873

4B3/8/4Q3/3NpN2/4k3/8/8/4K3

#2

5 + 2

2012 Miniature Chess Problems from Many Countries 1981
3310 2345 Chess Problems 1997
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qxe5+?
      • 1...Kd3
        • 2.Qe2#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kxe5!
    • 1.Qc6?
      • 1...Kd3
        • 2.Sb4#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Kf3!
    • 1.Qg6?
      • 1...Kf3
        • 2.Sh4#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kd3!
  • Keys
    • 1.Qa6!
      • 1...Kf3
        • 2.Qe2#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kxf5
        • 2.Qg6#

Anticipated by 207020(1861)

This anticipates 196682(1919)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK,XP(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::S(B)
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::S(C)
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);N_PINP(b)
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(D)
      • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(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).