MESON Chess Problem Database

Problem Display
PID: 260816 (4r3/3Np1p1/1R6/3k1Nn1/3P3r/p1P5/b2nQ2p/2b4K w - - 0 1)

Kupper, Josef

Schweizerische Schachzeitung, 2006

4r3/3Np1p1/1R6/3k1Nn1/3P3r/p1P5/b2nQ2p/2b4K

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qb5#
    • 1...Ra8
      • 2.Sxe7#
    • 1...Rb8
      • 2.Sxe7#
    • 1...Rc8
      • 2.Sxe7#
    • 1...Rd8
      • 2.Sxe7#
    • 1...Rf8
      • 2.Sxe7#
    • 1...Rg8
      • 2.Sxe7#
    • 1...Rh8
      • 2.Sxe7#
    • 1...Bc4
      • 2.Qe5#
    • 1...Sb3
      • 2.c4#
    • 1...Sde4
      • 2.Qxa2#
    • 1...Sf3
      • 2.Qe6#
    • 1...Sh3
      • 2.Qe6#
    • 1...Sge4
      • 2.Se3#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sf7
      • 2.Qe6#
    • 1...Sh7
      • 2.Qe6#
    • 1...e5
      • 2.Rd6#
    • 1...e6
      • 2.Rd6#
  • Tries
    • 1.Sf6+?
      • 1...exf6
        • 2.Rd6#
      • 1...gxf6!
    • 1.c4+?
      • 1...Bxc4
        • 2.Qe5#
      • 1...Sxc4!
  • Keys
    • 1.Sb8!
      • threat
        • 2.Rb5#
      • 1...Rxb8
        • 2.Sxe7#
      • 1...Re4
        • 2.Qb5#
      • 1...Rc8
        • 2.Sxe7#
      • 1...Bc4
        • 2.Qe5#
      • 1...Sb3
        • 2.c4#
      • 1...Sde4
        • 2.Qxa2#
      • 1...Sge4
        • 2.Se3#
      • 1...Se6
        • 2.Qxe6#
      • 1...e5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 10
  • Sets
    • R(f);SBLOCK::QAR2(B)
    • R(k);N_GUARD::S(E),XP(i)
    • B(b);SBLOCK::QAR1(B)
    • S(c);N_GUARD,S_CUTB(b)::P(C)
    • S(c);OGATE,SBLOCK::QAB(B),XB(b)
    • S(h);N_GUARD::QAB1(B)
    • S(h);SBLOCK::S(E)
    • S(h);N_GUARD::QAB1(B),XS(h)
    • P(i);N_GUARD::R1(F)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • P(i);XS(G)::R1(F)
      • Refutation
        • P(j);XS(G)
    • Try
      • P(C);CHECK
      • Vars
        • B(b);SBLOCK,XP(C)::QAR1(B)
      • Refutation
        • S(c);XP(C)
  • Actual
    • S(G);
    • Threat
      • R(F)
    • Vars
      • R(k);N_GUARD,XS(G)::S(E),XP(i)
      • R(f);SBLOCK::QAR2(B)
      • R(k);N_GUARD::S(E),XP(i)
      • B(b);SBLOCK::QAR1(B)
      • S(c);N_GUARD,S_CUTB(b)::P(C)
      • S(c);OGATE,SBLOCK::QAB(B),XB(b)
      • S(h);SBLOCK::S(E)
      • S(h);N_GUARD::QAB1(B),XS(h)
      • P(i);N_GUARD::R1(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).