MESON Chess Problem Database

Problem Display
PID: 270817 (3n4/N1B2pq1/8/1P5r/3k2n1/1B3P2/1P2PP2/1RR1K1Q1 w - - 0 1)

Dowd, Steven B

Tarnawiecki, Antonio

Garzon-60 JT (Problemas), 2023

3n4/N1B2pq1/8/1P5r/3k2n1/1B3P2/1P2PP2/1RR1K1Q1

#2

12 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qf8
      • 2.Qxg4#
    • 1...Qh8
      • 2.Qxg4#
    • 1...Rxb5
      • 2.Sxb5#
    • 1...Rc5
      • 2.Rd1#
    • 1...Rd5
      • 2.Rc4#
    • 1...Sxf2
      • 2.Qxf2#
    • 1...Se3
      • 2.fxe3#
    • 1...Se5
      • 2.Bb6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Se6
      • 2.Sc6#
    • 1...Sb7
      • 2.Sc6#
  • Tries
    • 1.e3+?
      • 1...Kd3
        • 2.Bc4#
        • 2.Rd1#
        • 2.Qf1#
      • 1...Sxe3!
  • Keys
    • 1.Ra1!
      • threat
        • 2.Ra4#
      • 1...Rxb5
        • 2.Sxb5#
      • 1...Sxf2
        • 2.Qxf2#
      • 1...Qf8
        • 2.Qxg4#
      • 1...Rc5
        • 2.Rd1#
      • 1...Se3
        • 2.fxe3#
      • 1...Se5
        • 2.Bb6#
      • 1...Sc6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • Q(e);N_GUARD::QAR(D),XS(b)
    • R(c);XP(J)::S(K),XR(c)
    • R(c);SBLOCK::R(B)
    • R(c);SBLOCK::R1(B)
    • S(b);OGATE,P_SPINS(b),XP(G)::QAB(D),XS(b)
    • S(b);OGATE::P(G),XS(b)
    • S(b);SBLOCK,S_CUTR(c)::B(L)
    • S(f);N_GUARD::S(K),XS(f)
    • S(f);N_GUARD::S(K)
  • Tries
    • Try
      • P(F);CHECK
      • Refutation
        • S(b);XP(F)
  • Actual
    • R(A);
    • Threat
      • R(A)
    • Vars
      • R(c);XP(J)::S(K),XR(c)
      • S(b);OGATE,P_SPINS(b),XP(G)::QAB(D),XS(b)
      • Q(e);N_GUARD::QAR(D),XS(b)
      • R(c);SBLOCK::R(B)
      • S(b);OGATE::P(G),XS(b)
      • S(b);SBLOCK,S_CUTR(c)::B(L)
      • S(f);N_GUARD::S(K),XS(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).