MESON Chess Problem Database

Problem Display
PID: 44116 (N2K4/8/3B2B1/p4p2/k1P2p1Q/8/2P1r2p/6bR w - - 0 1)

Hanshew, John K

Source?, 0000

N2K4/8/3B2B1/p4p2/k1P2p1Q/8/2P1r2p/6bR

#2

8 + 7

4803 Chess Problems by John K Hanshew 1874

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Be8#
    • 1...Rf2
      • 2.Sb6#
      • 2.Be8#
    • 1...Rg2
      • 2.Be8#
    • 1...Re3
      • 2.Sb6#
    • 1...Re8+
      • 2.Bxe8#
    • 1...Bf2
      • 2.Ra1#
    • 1...Be3
      • 2.Be8#
      • 2.Ra1#
    • 1...Bb6+
      • 2.Sxb6#
    • 1...Ba7
      • 2.Ra1#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qa3#
        • 2.Qb3#
      • 1...Re8+
        • 2.Bxe8#
      • 1...Bb6+
        • 2.Sxb6#
      • 1...Rxc2
        • 2.Be8#
        • 2.Qa3#
      • 1...Bc5
        • 2.Qb3#
      • 1...Re3
        • 2.Sb6#
      • 1...Be3
        • 2.Be8#
        • 2.Ra1#
      • 1...f3!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Sb6#
      • 1...Re8+
        • 2.Bxe8#
      • 1...Rxc2
        • 2.Qxc2#
      • 1...Bxf2
        • 2.Ra1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD,P_PINB(E)::B(F)
    • R(b);N_GUARD::B(F)
    • R(b);S_CUTB(a)::S(G)
    • R(b);CHECK,N_GUARD::B(F),XR(b)
    • B(a);OGATE::R(A)
    • B(a);CHECK,N_GUARD::S(G),XB(a)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);CHECK,N_GUARD::B(F),XR(b)
        • B(a);CHECK,N_GUARD::S(G),XB(a)
        • B(a);::QAB1(D)
        • R(b);S_CUTB(a)::S(G)
      • Refutation
        • P(e);
  • Actual
    • Q(D);
    • Threat
      • S(G)
    • Vars
      • R(b);CHECK,N_GUARD::B(F),XR(b)
      • R(b);OGATE,XP(B)::QAB(D),XR(b)
      • B(a);OGATE,XQ(D)::R(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).