MESON Chess Problem Database

Problem Display
PID: 95466 (8/1K1B4/2Rbpr2/2pk4/4R1p1/8/3n2Q1/B7 w - - 0 1)

Zidek, Alexander

Sachsische Zeitung, 1996

8/1K1B4/2Rbpr2/2pk4/4R1p1/8/3n2Q1/B7

#2

6 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Bxe6#
    • 1...Rf2
      • 2.Bxe6#
    • 1...Rf4
      • 2.Bxe6#
    • 1...Rf5
      • 2.Bxe6#
    • 1...Rf8
      • 2.Bxe6#
    • 1...Be5
      • 2.Rd4#
    • 1...Sb1
      • 2.Rf4#
    • 1...Sf1
      • 2.Rf4#
    • 1...Sb3
      • 2.Rf4#
    • 1...Sc4
      • 2.Rf4#
      • 2.Re5#
    • 1...c4
      • 2.Re5#
    • 1...e5
      • 2.Rd4#
  • Tries
    • 1.Rf4+?
      • 1...Se4
        • 2.Qxe4#
      • 1...Sf3!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qd3#
      • 1...Sf3
        • 2.Qc4#
      • 1...Rf3
        • 2.Bxe6#
      • 1...Be5
        • 2.Rxe5#
      • 1...Sb3
        • 2.Qc4#
      • 1...c4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(g);N_GUARD::B(F),XP(f)
    • B(e);SBLOCK::QAB(B)+R(C),DCHECK
    • S(a);N_GUARD::QAB(B)+R(C)
    • P(c);::QAB(B)+R(C),DCHECK
    • P(f);SBLOCK::QAB(B)+R(C),DCHECK
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • S(a);N_GUARD::QAB1(B)
      • R(g);N_GUARD::B(F),XP(f)
      • B(e);N_GUARD::R1(C),XB(e)
      • P(c);N_GUARD::R1(C)
HTML5 logo

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).