MESON Chess Problem Database

Problem Display
PID: 151835 (5R2/B1K5/4p1B1/3Nk3/2p1n2p/2N1r3/1Q6/bb2R3 w - - 0 1)

Barnes, Barry Peter

The Problemist, 2013

5R2/B1K5/4p1B1/3Nk3/2p1n2p/2N1r3/1Q6/bb2R3

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Rxe4#
    • 1...Sg5
      • 2.Qh2#
    • 1...Sd6
      • 2.Qh2#
    • 1...Sf6
      • 2.Qh2#
  • Tries
    • 1.Sxe3?
      • threat
        • 2.Sxc4#
        • 2.Sg4#
      • 1...Sxc3
        • 2.Qh2#
      • 1...Sf6
        • 2.Qh2#
      • 1...Ba2
        • 2.Sg4#
      • 1...Bd3
        • 2.Sg4#
      • 1...Sc5!
    • 1.Sb4?
      • threat
        • 2.Sc6#
      • 1...Sxc3
        • 2.Qh2#
      • 1...Sf6
        • 2.Qh2#
      • 1...Rxc3!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sc6#
      • 1...Rxc3
        • 2.Qb5#
      • 1...Sxc3
        • 2.Qh2#
      • 1...Sf6
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(c);OGATE,P_SPINS(e)::R1(A),XS(e)
    • S(e);N_GUARD,P_SPINR(c)::QAB(B)
  • Tries
    • Try
      • S(D);XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);N_GUARD,P_SPINS(e),XS(C)::QAB(B)
        • S(e);N_GUARD::QAB(B)
        • B(b);::S(D)
      • Refutation
        • S(e);
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • S(e);N_GUARD,P_SPINR(c),P_SPINS(e),XS(C)::QAB(B)
        • S(e);N_GUARD,P_SPINR(c)::QAB(B)
      • Refutation
        • R(c);P_SPINR(c),P_SPINS(e),XS(C)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(c);P_SPINR(c),P_SPINS(e),XS(C)::QAR(B)
      • S(e);N_GUARD,P_SPINR(c),P_SPINS(e),XS(C)::QAB(B)
      • S(e);N_GUARD,P_SPINR(c)::QAB(B)
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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).