MESON Chess Problem Database

Problem Display
PID: 11788 (3Bb2K/5Bp1/1p4R1/qPkN2b1/ppP1n2p/r2pP2r/3N4/6Q1 w - - 0 1)

Chandler, Guy Wills

Daily Mirror, 1972

3Bb2K/5Bp1/1p4R1/qPkN2b1/ppP1n2p/r2pP2r/3N4/6Q1

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qa8
      • 2.Bxb6#
    • 1...Bc6
      • 2.Rxc6#
    • 1...Bxf7
      • 2.Rc6#
    • 1...Sf6
      • 2.Be7#
  • Tries
    • 1.Be7+?
      • 1...Sd6
        • 2.Bxd6#
      • 1...Bxe7!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sxe4#
      • 1...Rxe3
        • 2.Qxe3#
      • 1...Bxf7
        • 2.Rc6#
      • 1...Sxd2
        • 2.Qxg5#
      • 1...Sf6
        • 2.Be7#
      • 1...b3
        • 2.Sxd3#
      • 1...Qa8
        • 2.Bxb6#
      • 1...Bc6
        • 2.Rxc6#
      • 1...Sf2
        • 2.Qxg5#
      • 1...Sc3
        • 2.Sxd3#
      • 1...Sg3
        • 2.e4#
      • 1...Sd6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(h);N_GUARD::B(I),XP(k)
    • B(m);N_GUARD::R1(G),XB(m)
    • B(m);N_GUARD,XB(H)::R1(G)
    • S(f);N_GUARD,S_CUTB(j)::B(I)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::B(I),XS(f)
      • Refutation
        • B(j);XB(I)
  • Actual
    • S(F);
    • Threat
      • S(B),XS(f)
    • Vars
      • R(c);OGATE,P_SPINR(c),XP(C)::QAB(A),XR(c)
      • B(m);N_GUARD,XB(H)::R1(G)
      • S(f);N_GUARD,XS(B)::QAR(A),XB(j)
      • S(f);N_GUARD,S_CUTB(j)::B(I)
      • P(e);S_CUTR(a)::S(F),XP(b)
      • Q(h);N_GUARD::B(I),XP(k)
      • B(m);N_GUARD::R1(G),XB(m)
      • S(f);N_GUARD::QAR(A),XB(j)
      • S(f);S_CUTR(a)::S(F),XP(b)
      • S(f);OGATE::QAB(A)+P(C)
      • S(f);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).