MESON Chess Problem Database

Problem Display
PID: 222389 (2Q5/1p2p3/3P4/r2k2NK/1R1N4/5p2/2p1p3/B1rR4 w - - 0 1)

Keeney, Ebenezer Wood

Prize, Cincinnati Commercial Gazette, 1883

2Q5/1p2p3/3P4/r2k2NK/1R1N4/5p2/2p1p3/B1rR4

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Sdxf3#
      • 2.Sc6#
    • 1...Kxd6
      • 2.Sb5#
      • 2.Sf5#
    • 1...Rc5
      • 2.Qe6#
    • 1...exd6
      • 2.Qf5#
  • Tries
    • 1.Rb5+?
      • 1...Kxd6
        • 2.Sf5#
        • 2.Se4#
        • 2.Sf7#
        • 2.Qd8#
      • 1...Rxb5!
    • 1.Qc4+?
      • 1...Kxd6
        • 2.Sb5#
        • 2.Sf5#
      • 1...Ke5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qe6#
      • 1...Kxe4+
        • 2.Sf5#
      • 1...Ke5
        • 2.Qf5#
      • 1...e5
        • 2.Qxb7#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(e);SBLOCK::QAB1(H)
    • P(h);N_GUARD,SBLOCK,XP(G)::QAR2(H)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • R(e);XR(C)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAB1(H)
    • Vars
      • K(f);CHECK,S_FLIGHT,XS(E)::R(C)+S(D)
      • K(f);P-FLIGHT::QAR1(H)
      • P(h);SBLOCK::QAB(H),XP(g)
      • P(h);::QAB1(H),XP(h)
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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).