MESON Chess Problem Database

Problem Display
PID: 2525 (2B5/3rpr1p/6bR/Rn1n1kNP/1pN2p1B/1P1K1Qp1/8/8 w - - 0 1)

Mackenzie, Arthur Ford

2nd Prize, Elmira Telegram, 1883

2B5/3rpr1p/6bR/Rn1n1kNP/1pN2p1B/1P1K1Qp1/8/8

#2

10 + 11

3530 Het Half Pin Thema (II) 0000
1253 Leeds Mercury Weekly Supplement 1883
2794 Terms & Themes of Chess Problems 1907
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kf6
        • 2.Se6#
      • 1...Kg4!
  • Keys
    • 1.Se6!
      • 1...Kxe6+
        • 2.Qe4#
      • 1...Sdc3+
        • 2.Sd4#
      • 1...Se3+
        • 2.Sd4#
      • 1...Sb6+
        • 2.Sd4#
      • 1...Sf6+
        • 2.Sd4#
      • 1...Sdc7+
        • 2.Sd4#
      • 1...Bxh5
        • 2.Qxh5#
      • 1...Rd6
        • 2.Sd4#
        • 2.Sg7#
      • 1...Ra7
        • 2.Sd4#
        • 2.Sg7#
      • 1...Rb7
        • 2.Sd4#
        • 2.Sg7#
      • 1...Rc7
        • 2.Sd4#
        • 2.Sg7#
      • 1...Rd8
        • 2.Sd4#
        • 2.Sg7#
      • 1...Rf6
        • 2.Sg7#
      • 1...Rg7
        • 2.Sxg7#
      • 1...Rf8
        • 2.Sg7#
      • 1...Sa3
        • 2.Sd4#
      • 1...Sbc3
        • 2.Sd4#
      • 1...Sd4
        • 2.Sxd4#
      • 1...Sd6
        • 2.Sd4#
      • 1...Sa7
        • 2.Sd4#
      • 1...Sbc7
        • 2.Sd4#
      • 1...g2
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 17
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(c)
      • Vars
        • K(f);N_SPINR(h),P-FLIGHT,P_PINQ(C),P_SPINB(g)::B(E)+S(G)
      • Refutation
        • K(f);P_PINQ(C),P_SPINP(c),S_FLIGHT
  • Actual
    • S(G);N_PINR(h)
    • Vars
      • K(f);CHECK,N_SPINP(c),P_SPINB(g),P_SPINR(h),S_FLIGHT,XS(G)::QAR2(C)
      • S(e);CHECK,P_SPINS(d)::S(G)
      • B(g);OGATE,XP(H)::QAR2(C),XB(g)
      • R(j);N_GUARD::S(G)
      • R(j);N_GUARD::S(G),XR(j)
      • S(d);N_GUARD,P_SPINS(e)::S(G)
      • S(d);N_GUARD,P_SPINS(e)::S(G),XS(d)
      • P(a);OGATE::QAB(C)
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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).