MESON Chess Problem Database

Problem Display
PID: 206936 (8/2q5/1N2p3/1pb1k1P1/5R2/6N1/4K3/2Q5 w - - 0 1)

Brown, Theodore Morris

New York Clipper, 1857

8/2q5/1N2p3/1pb1k1P1/5R2/6N1/4K3/2Q5

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Re4#
    • 1...Bg1
      • 2.Qxc7#
    • 1...Bf2
      • 2.Qxc7#
    • 1...Be3
      • 2.Qxc7#
    • 1...Bd4
      • 2.Qxc7#
    • 1...Bd6
      • 2.Re4#
      • 2.Qe3#
  • Tries
    • 1.Sc4+?
      • 1...Kd5
        • 2.Qh1#
      • 1...bxc4!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Kxd4
        • 2.Qb2#
        • 2.Qe3#
        • 2.Qa1#
      • 1...Bxd4
        • 2.Qxc7#
      • 1...Qc6
        • 2.Qf4#
      • 1...Qb7
        • 2.Qf4#
      • 1...Qf7
        • 2.Qe3#
        • 2.Qxc5#
      • 1...Qh7
        • 2.Qf4#
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(e);SBLOCK::R1(D)
    • B(b);OGATE::QAB(A),XQ(e)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB(A)
      • Refutation
        • P(a);XS(F)
  • Actual
    • R(D);
    • Threat
      • DUALS(2)
    • Vars
      • B(b);OGATE,SBLOCK,XR(D)::QAB(A),XQ(e)
      • Q(e);::QAB1(A)
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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).