MESON Chess Problem Database

Problem Display
PID: 175487 (K7/3p1B1p/7p/3P1k2/2N1Npn1/4Pr2/1P4Q1/6R1 w - - 0 1)

Phelps, Francis Bradley

Philadelphia Times, 1899

K7/3p1B1p/7p/3P1k2/2N1Npn1/4Pr2/1P4Q1/6R1

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qc2#
    • 1...Se5
      • 2.Scd6#
    • 1...Sf6
      • 2.Sed6#
    • 1...fxe3
      • 2.Qxf3#
      • 2.Qxg4#
  • Tries
    • 1.Be6+?
      • 1...Kxe4
        • 2.Qc2#
      • 1...Kg6
        • 2.Qxg4#
      • 1...dxe6!
  • Keys
    • 1.Bg8!
      • threat
        • 2.Bxh7#
      • 1...Kxe4
        • 2.Qc2#
      • 1...Kg6
        • 2.Qxg4#
      • 1...fxe3
        • 2.Qxg4#
      • 1...Se5
        • 2.Scd6#
      • 1...Sf6
        • 2.Sed6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);OGATEB,P_SPINR(a),S_FLIGHT,XS(F)::QAB(C)
    • S(c);SBLOCK::S(E)
    • S(c);SBLOCK::S(F)
  • Tries
    • Try
      • B(H);CHECK
      • Vars
        • K(d);P_SPINR(a),S_FLIGHT,XS(F)::QAB(C)
        • K(d);P_SPINS(c),S_FLIGHT::QAR2(C),XS(c)
      • Refutation
        • P(f);XB(H)
  • Actual
    • B(H);
    • Threat
      • B(H),XP(g)
    • Vars
      • K(d);OGATEB,P_SPINR(a),S_FLIGHT,XS(F)::QAB(C)
      • K(d);P_SPINS(c),S_FLIGHT::QAR2(C),XS(c)
      • P(b);XP(D)::QAB1(C),XS(c)
      • S(c);SBLOCK::S(E)
      • S(c);SBLOCK::S(F)
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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).