MESON Chess Problem Database

Problem Display
PID: 170224 (B2qN3/2p5/3p4/3b2PK/Q2pk2n/4p1BN/2P3Pn/3r1R2 w - - 0 1)

Kupper, Josef

Tages-Anzeiger, 2006

B2qN3/2p5/3p4/3b2PK/Q2pk2n/4p1BN/2P3Pn/3r1R2

#2

10 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg5+
      • 2.Sxg5#
    • 1...Qf6
      • 2.Sxf6#
    • 1...Qd7
      • 2.Sf6#
    • 1...Qxa8
      • 2.Sf6#
    • 1...Qb8
      • 2.Sf6#
    • 1...Qc8
      • 2.Sf6#
    • 1...Qxe8+
      • 2.Qxe8#
  • Tries
    • 1.Sf2+?
      • 1...Kf5
        • 2.Sg7#
      • 1...exf2!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qe6#
      • 1...Qxg5+
        • 2.Sxg5#
      • 1...Qxe8+
        • 2.Qxe8#
      • 1...Qxd7
        • 2.Sf6#
      • 1...Qxa8
        • 2.Sf6#
      • 1...d3
        • 2.Qa4#
      • 1...c6
        • 2.Sxd6#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Qe7
        • 2.Qxe7#
      • 1...Qc8
        • 2.Sf6#
      • 1...S2f3
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...S4f3
        • 2.Qh7#
      • 1...Sg6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • Q(j);CHECK,XP(G)::S(E),XQ(j)
    • Q(j);N_GUARD::S(J),XQ(j)
    • Q(j);N_GUARD::S(J)
    • Q(j);N_GUARD,N_SPINB(g),XB(I)::S(J)
    • Q(j);CHECK,OGATE,XS(J)::QAR(F),XQ(j)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);N_SPINB(g),N_SPINP(d),S_FLIGHT::S(J)
      • Refutation
        • P(c);XS(E)
  • Actual
    • Q(F);N_PINP(d)
    • Threat
      • QAR2(F)
    • Vars
      • Q(j);CHECK,XP(G)::S(E),XQ(j)
      • Q(j);CHECK,OGATE,XS(J)::QAR(F),XQ(j)
      • Q(j);N_GUARD,XQ(F)::S(J)
      • Q(j);N_GUARD,N_SPINB(g),XB(I)::S(J)
      • P(d);OGATEB::QAR(F)
      • P(i);N_GUARD,N_SPINB(g)::S(J),XP(h)
      • Q(j);N_GUARD::S(J),XQ(j)
      • Q(j);N_GUARD::QAR(F),XQ(j)
      • Q(j);N_GUARD::S(J)
      • S(b);N_GUARD::QAR2(F)
      • S(b);N_GUARD::QAR2(F),XS(b)
      • S(f);N_GUARD::QAB(F)
      • S(f);N_GUARD::QAB1(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).