MESON Chess Problem Database

Problem Display
PID: 92141 (6QN/K2n2p1/5P2/2p1pkPR/6R1/1n1N1P2/B7/2b3r1 w - - 0 1)

Wielgos, Oskar

Deutsche Schachzeitung, 1985

6QN/K2n2p1/5P2/2p1pkPR/6R1/1n1N1P2/B7/2b3r1

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Be6#
      • 2.Qe6#
    • 1...Sd2
      • 2.Be6#
      • 2.Qe6#
    • 1...Sa5
      • 2.Be6#
      • 2.Qe6#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qxd7#
      • 1...Bxg5
        • 2.Rhxg5#
      • 1...Sf8
        • 2.fxg7#
      • 1...Sd4
        • 2.Qg6#
      • 1...Sb6
        • 2.fxg7#
      • 1...Sb8
        • 2.fxg7#
      • 1...Sxf6!
    • 1.Qh7+?
      • 1...g6
        • 2.Qxd7#
      • 1...Ke6!
    • 1.Qe8?
      • threat
        • 2.Qxd7#
      • 1...Sxf6
        • 2.Qxe5#
      • 1...Sf8
        • 2.Qxe5#
      • 1...Sd4
        • 2.Qg6#
      • 1...Sb6
        • 2.Qxe5#
      • 1...Sb8
        • 2.Qxe5#
      • 1...Bxg5!
    • 1.g6+?
      • 1...Kxf6
        • 2.Qf7#
      • 1...Bg5!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qxd7#
      • 1...Bxg5
        • 2.Rf4#
      • 1...Sxf6
        • 2.Qxe5#
      • 1...Sf8
        • 2.Qxe5#
      • 1...Sd4
        • 2.Qe4#
      • 1...Sb6
        • 2.Qxe5#
      • 1...Sb8
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAB(I),XS(g)
      • Vars
        • B(a);OGATE,P_SPINB(a),XP(E)::R1(F),XB(a)
        • S(g);N_GUARD::QAR(I)+P(G),XP(h)
        • S(c);::QAB1(I)
      • Refutation
        • S(g);P_SPINS(g),XP(G)
    • Try
      • Q(I);CHECK
      • Vars
        • P(h);OGATE,P_SPINP(h)::QAB(I),XS(g)
      • Refutation
        • K(f);P_SPINS(c),S_FLIGHT
    • Try
      • Q(I);
      • Threat
        • QAB(I),XS(g)
      • Vars
        • S(g);N_GUARD,XP(G)::QAR1(I),XP(e)
        • S(g);N_GUARD::QAR1(I),XP(e)
        • S(c);::QAB1(I)
      • Refutation
        • B(a);P_SPINB(a),XP(E)
    • Try
      • P(E);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(G)::QAR1(I)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(I);P_PINP(e)
    • Threat
      • QAB(I),XS(g)
    • Vars
      • B(a);N_GUARD,P_SPINB(a),XP(E)::R1(D)
      • S(g);N_GUARD,XP(G)::QAR1(I),XP(e)
      • S(g);N_GUARD::QAR1(I),XP(e)
      • S(c);::QAB1(I)
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).