MESON Chess Problem Database

Problem Display
PID: 117497 (b4r2/3N4/Q3Rp2/4r2P/4k2K/p2R1p2/P1n1Nn2/7B w - - 0 1)

Mackenzie, Arthur Ford

Buffalo Times, 1885

b4r2/3N4/Q3Rp2/4r2P/4k2K/p2R1p2/P1n1Nn2/7B

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Sc5#
      • 2.Bxf3#
      • 2.Rxe5#
  • Tries
    • 1.Qc4+?
      • 1...Kf5
        • 2.Sg3#
      • 1...Sd4!
  • Keys
    • 1.Rxf3!
      • 1...Kd5
        • 2.Rd3#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Sxh1
        • 2.Qd3#
      • 1...Rf7
        • 2.Qxa8#
      • 1...Rb8
        • 2.Sxf6#
      • 1...Rc8
        • 2.Sxf6#
      • 1...Rd8
        • 2.Sxf6#
      • 1...Re8
        • 2.Sxf6#
      • 1...Rg8
        • 2.Sxf6#
      • 1...Rh8
        • 2.Sxf6#
      • 1...Bd5
        • 2.Sc5#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Sa1
        • 2.Qc4#
      • 1...Se1
        • 2.Qc4#
      • 1...Se3
        • 2.Rf4#
      • 1...Sb4
        • 2.Qc4#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sh3
        • 2.Qd3#
      • 1...Sg4
        • 2.Qd3#
      • 1...f5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 23
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);N_SPINP(d),N_SPINR(f),S_FLIGHT::S(C)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • R(D);XP(d)
    • Vars
      • K(e);N_SPINR(f),S_FLIGHT::B(A)+R(D),DCHECK
      • R(f);N_SPINR(f),OGATE,XR(H)::QAR2(G),XR(f)
      • S(b);N_GUARD,XB(A)::QAB1(G)
      • R(i);N_GUARD::QAB(G),XB(h)
      • R(i);N_GUARD::S(I),XP(g)
      • R(i);N_GUARD,P_PINP(F)::S(I),XP(g)
      • B(h);SBLOCK::S(I)
      • B(h);N_GUARD::QAB(G),XB(h)
      • S(a);N_GUARD::QAR2(G)
      • S(a);SBLOCK::B(A)+R(D),DCHECK
      • S(a);SBLOCK::S(C)
      • S(b);N_GUARD::QAB1(G)
      • S(b);N_GUARD::QAB1(G),XS(b)
      • P(g);N_GUARD::R1(H),XR(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).