MESON Chess Problem Database

Problem Display
PID: 174838 (7B/P1P1N1qr/p7/6Rp/rn1knP2/1P1p1P2/3b2K1/3N4 w - - 0 1)

Barth, Michael

Sachove umeni (Ceskoslovensky sach), 2003

7B/P1P1N1qr/p7/6Rp/rn1knP2/1P1p1P2/3b2K1/3N4

#2

10 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Sc6#
    • 1...Sc2
      • 2.Sc6#
    • 1...Sc6
      • 2.Sxc6#
  • Tries
    • 1.Bxg7+?
      • 1...Sf6
        • 2.Bxf6#
      • 1...Rxg7!
    • 1.a8Q?
      • threat
        • 2.Qxe4#
      • 1...Sxg5
        • 2.Qa7#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sf2
        • 2.Qa7#
      • 1...Sc3
        • 2.Qa7#
      • 1...Sg3
        • 2.Qa7#
      • 1...Sc5
        • 2.Sf5#
      • 1...Sd6
        • 2.Qa7#
      • 1...Sf6
        • 2.Qa7#
      • 1...Qe5!
  • Keys
    • 1.c8Q!
      • threat
        • 2.Qc4#
      • 1...Sa2
        • 2.Sc6#
      • 1...Sc2
        • 2.Sc6#
      • 1...Sd5
        • 2.Sf5#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::S(I)
    • S(d);N_GUARD::S(I),XS(d)
  • Tries
    • Try
      • B(J);CHECK,N_SPINR(F),XQ(i)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::B(J),XS(f)
      • Refutation
        • R(j);P_PINR(F),XB(J)
    • Try
      • P(G);
      • Threat
        • QAR1(G),XS(f)
      • Vars
        • S(f);N_GUARD,XR(F)::QAB(G)
        • S(d);N_GUARD::QAR1(G),XS(d)
        • S(d);N_GUARD::S(I),XS(d)
        • S(f);N_GUARD::QAB(G)
        • S(f);N_GUARD,N_PINR(F)::QAB(G)
        • S(f);SBLOCK::S(I)
        • S(f);N_GUARD,N_SPINQ(i)::QAB(G)
      • Refutation
        • Q(i);N_PINR(F)
  • Actual
    • P(H);
    • Threat
      • QAR1(H)
    • Vars
      • S(d);N_GUARD::S(I)
      • S(d);SBLOCK::S(I)
      • S(d);N_GUARD::S(I),XS(d)
      • S(f);N_GUARD::QAB1(H),XS(f)
      • S(f);N_GUARD::QAB1(H)
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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).