MESON Chess Problem Database

Problem Display
PID: 212839 (KQ6/1B6/1bN5/pkN2R2/n7/PP6/5q2/2r5 w - - 0 1)

Dawiddowski, Tomasz

Sachova skladba, 1989

KQ6/1B6/1bN5/pkN2R2/n7/PP6/5q2/2r5

#2

8 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sd4#
    • 1...Qg3
      • 2.Sd4#
    • 1...Qd4
      • 2.Sxd4#
    • 1...Qxc5
      • 2.Sd4#
    • 1...Qf1
      • 2.Sd4#
    • 1...Qa2
      • 2.Sd4#
    • 1...Qc2
      • 2.Sd4#
    • 1...Qe2
      • 2.Sd4#
    • 1...Qg2
      • 2.Sd4#
    • 1...Qh2
      • 2.Sd4#
    • 1...Qf3
      • 2.Sd4#
    • 1...Sxc5
      • 2.a4#
  • Tries
    • 1.Sxa4+?
      • 1...Qc5
        • 2.Sd4#
      • 1...Rc5
        • 2.Sc3#
      • 1...Bc5
        • 2.Sa7#
      • 1...Qxf5!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Ba6#
      • 1...Qxc5
        • 2.Sd4#
      • 1...Rxc5
        • 2.Qd3#
      • 1...Bxc5
        • 2.Sa7#
      • 1...Sxc5
        • 2.a4#
      • 1...Ba7
        • 2.Sxa7#
      • 1...Bc7
        • 2.Sa7#
      • 1...Bd8
        • 2.Sa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 10
  • Sets
    • Q(b);N_GUARD::S(E)
    • Q(b);N_GUARD::S(E),XQ(b)
    • Q(b);N_GUARD,P_SPINQ(b),XS(C)::S(E)
    • S(c);OGATE,P_SPINS(c),XS(C)::P(A)
  • Tries
    • Try
      • S(C);CHECK,XS(c)
      • Vars
        • Q(b);P_SPINQ(b)::S(E)
        • R(a);P_SPINR(a)::S(C)
        • B(f);P_SPINB(f)::S(E)
      • Refutation
        • Q(b);XR(D)
  • Actual
    • Q(H);
    • Threat
      • B(F)
    • Vars
      • Q(b);N_GUARD,P_SPINQ(b),XS(C)::S(E)
      • R(a);N_GUARD,P_SPINR(a),XS(C)::QAB(H)
      • B(f);N_GUARD,P_SPINB(f),XS(C)::S(E)
      • S(c);OGATE,P_SPINS(c),XS(C)::P(A)
      • B(f);N_GUARD::S(E),XB(f)
      • B(f);N_GUARD::S(E)
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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).