MESON Chess Problem Database

Problem Display
PID: 207556 (2Q3q1/4N3/3p4/3Bk1P1/p4r2/KpPr2b1/4P3/2B1R3 w - - 0 1)

Cotton, William C

Amateur Chess Magazine, 1872

2Q3q1/4N3/3p4/3Bk1P1/p4r2/KpPr2b1/4P3/2B1R3

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Qxe6#
    • 1...Qh7
      • 2.Qe6#
    • 1...Qxg5
      • 2.Qe6#
    • 1...Qg7
      • 2.Qe6#
    • 1...Qd8
      • 2.Qe6#
    • 1...Qe8
      • 2.Qe6#
    • 1...Qf8
      • 2.Qe6#
    • 1...Qh8
      • 2.Qe6#
    • 1...Rb4
      • 2.Qf5#
    • 1...Rc4
      • 2.Qf5#
    • 1...Rd4
      • 2.Qf5#
    • 1...Re4
      • 2.Qf5#
    • 1...Rg4
      • 2.Qf5#
    • 1...Rh4
      • 2.Qf5#
    • 1...Rf5
      • 2.Qxf5#
    • 1...Rf7
      • 2.Qe6#
  • Tries
    • 1.Bxf4+?
      • 1...Bxf4
        • 2.Qf5#
      • 1...Kxf4!
    • 1.exd3+?
      • 1...Re4
        • 2.Rxe4#
        • 2.Qf5#
        • 2.d4#
      • 1...Bxe1!
  • Keys
    • 1.e4!
      • threat
        • 2.Sc6#
      • 1...Qxd5
        • 2.Sg6#
      • 1...Qxg5
        • 2.Qe6#
      • 1...Qxc8
        • 2.Sg6#
      • 1...Rxc3
        • 2.Qxc3#
      • 1...Rxe4
        • 2.Rxe4#
        • 2.Qf5#
      • 1...Qe8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 14
  • Sets
    • Q(h);N_GUARD::QAR1(I),XQ(h)
    • Q(h);N_GUARD::QAR1(I)
    • Q(h);N_GUARD,XP(G)::QAR1(I)
    • R(e);N_GUARD::QAR1(I)
    • R(e);N_GUARD::QAR1(I),XR(e)
    • R(e);S_CUTQ(h)::QAR1(I)
  • Tries
    • Try
      • B(A);CHECK,XR(e)
      • Vars
        • B(c);XB(A)::QAR1(I)
      • Refutation
        • K(f);S_FLIGHT,XB(A)
    • Try
      • P(C);CHECK,XR(b)
      • Refutation
        • B(c);XR(B)
  • Actual
    • P(C);
    • Threat
      • S(H)
    • Vars
      • Q(h);N_GUARD,XB(F)::S(H)
      • Q(h);N_GUARD,XP(G)::QAR1(I)
      • Q(h);N_GUARD,XQ(I)::S(H)
      • R(b);OGATE,XP(E)::QAB(I),XR(b)
      • Q(h);N_GUARD::QAR1(I)
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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).