MESON Chess Problem Database

Problem Display
PID: 145674 (2N2b2/1n5p/2B1R2p/1Q1b1k2/1n2R2B/2prp3/3p2K1/8 w - - 0 1)

Speakman, Thomas

British Chess Magazine, 1900

2N2b2/1n5p/2B1R2p/1Q1b1k2/1n2R2B/2prp3/3p2K1/8

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qf1#
    • 1...Be7
      • 2.Sxe7#
    • 1...Bg7
      • 2.Se7#
  • Tries
    • 1.Bxd5?
      • threat
        • 2.Rf6#
      • 1...Rxd5
        • 2.Qf1#
      • 1...Be7
        • 2.Sxe7#
      • 1...Bg7
        • 2.Se7#
      • 1...Sxd5!
    • 1.Qxb7?
      • threat
        • 2.Qf7#
        • 2.Qxh7#
      • 1...Bxe6
        • 2.Qxh7#
      • 1...Be7
        • 2.Sxe7#
      • 1...Bg7
        • 2.Sd6#
        • 2.Se7#
      • 1...Bxe4+!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Rf6#
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Rd4
        • 2.Qf1#
      • 1...Be7
        • 2.Sxe7#
      • 1...Bg7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE::QAR(D)
    • B(k);N_GUARD::S(G),XB(k)
    • B(k);N_GUARD::S(G)
  • Tries
    • Try
      • B(E);N_SPINR(B),XB(f)
      • Threat
        • R1(F)
      • Vars
        • R(c);OGATE,P_SPINR(c),XB(E)::QAR(D)
        • B(k);N_GUARD::S(G),XB(k)
        • B(k);N_GUARD::S(G)
      • Refutation
        • S(e);P_SPINS(e),XB(E)
    • Try
      • Q(D);N_PINB(f),XS(i)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);N_PINR(B),XR(F)::QAB(D),XP(j)
        • B(k);N_GUARD::S(G),XB(k)
      • Refutation
        • B(f);CHECK,XR(B)
  • Actual
    • Q(D);N_PINB(f)
    • Threat
      • R1(F)
    • Vars
      • B(f);CHECK,OGATE,XR(B)::QAB1(D),XB(f)
      • B(f);N_PINR(B),OGATE,XR(F)::QAB1(D),XB(f)
      • R(c);OGATE::QAR(D)
      • B(k);N_GUARD::S(G),XB(k)
      • B(k);N_GUARD::S(G)
HTML5 logo

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).