MESON Chess Problem Database

Problem Display
PID: 2339 (2b1nN2/5n2/p2b4/2k5/PN6/1K2P1r1/8/5QBr w - - 0 1)

Gardner, John Carey

Source?, 0000

2b1nN2/5n2/p2b4/2k5/PN6/1K2P1r1/8/5QBr

#2

7 + 8

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3+
      • 2.Bxe3#
    • 1...Bb7
      • 2.Sd7#
    • 1...Bd7
      • 2.Sxd7#
    • 1...a5
      • 2.Qb5#
  • Keys
    • 1.Qxa6!
      • threat
        • 2.Qb5#
        • 2.Qa5#
        • 2.Qc6#
        • 2.Qa7#
      • 1...Rxe3+
        • 2.Bxe3#
      • 1...Be6+
        • 2.Sxe6#
      • 1...Bxf8
        • 2.Qc6#
      • 1...Bxa6
        • 2.Sd7#
      • 1...Bf4
        • 2.Qc6#
      • 1...Be5
        • 2.Qc6#
      • 1...Bc7
        • 2.Qc6#
      • 1...Be7
        • 2.Qc6#
      • 1...Bb8
        • 2.Qc6#
      • 1...Bb7
        • 2.Se6#
        • 2.Sd7#
        • 2.Qb5#
        • 2.Qa5#
        • 2.Qa7#
      • 1...Bd7
        • 2.Sxd7#
        • 2.Qa7#
      • 1...Se5
        • 2.Qb5#
        • 2.Qa5#
        • 2.Qa7#
      • 1...Sd8
        • 2.Qb5#
        • 2.Qa5#
        • 2.Qa7#
      • 1...Sc7
        • 2.Qc6#
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • R(b);CHECK,OGATE,P_SPINR(b),XP(D)::B(B),XR(b)
    • B(g);N_GUARD::S(G)
    • B(g);N_GUARD::S(G),XB(g)
    • P(d);N_GUARD::QAR1(A)
  • Actual
    • Q(A);XP(d)
    • Threat
      • DUALS(4)
    • Vars
      • R(b);CHECK,OGATE,P_SPINR(b),XP(D)::B(B),XR(b)
      • B(g);CHECK,N_GUARD::S(G),XB(g)
      • B(e);XS(G)::QAR1(A)
      • B(g);N_GUARD,XQ(A)::S(G)
      • B(e);::QAR1(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).