MESON Chess Problem Database

Problem Display
PID: 70227 (8/2rpK3/1ppB3Q/Rnqkp1p1/4r3/2pP1n2/2N3Bb/7b w - - 0 1)

Vesz, Tibor

Good Companions (May), 1922

8/2rpK3/1ppB3Q/Rnqkp1p1/4r3/2pP1n2/2N3Bb/7b

#2

7 + 14

3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6+
      • 2.Qxd6#
    • 1...Rd4
      • 2.Se3#
    • 1...Sfd4
      • 2.Se3#
    • 1...Sbd4
      • 2.Sb4#
    • 1...Sxd6
      • 2.Qxd6#
  • Tries
    • 1.Qg6?
      • threat
        • 2.Qxe4#
        • 2.Qf7#
        • 2.Qg8#
      • 1...Qxd6+
        • 2.Qxd6#
      • 1...Sxd6
        • 2.Qxd6#
      • 1...Qe3
        • 2.Qf7#
        • 2.Qg8#
      • 1...Qb4
        • 2.Qf7#
        • 2.Qg8#
      • 1...Qd4
        • 2.Qf7#
        • 2.Qg8#
      • 1...Qc4
        • 2.Qf7#
        • 2.Qg8#
      • 1...Re1
        • 2.Qf7#
        • 2.Qg8#
      • 1...Re2
        • 2.Qf7#
        • 2.Qg8#
      • 1...Re3
        • 2.Qf7#
        • 2.Qg8#
      • 1...Ra4
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rb4
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rc4
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rd4
        • 2.Se3#
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rg4
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rh4
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rc8
        • 2.Qxe4#
        • 2.Qf7#
      • 1...Sd2
        • 2.Qf7#
        • 2.Qg8#
      • 1...Sfd4
        • 2.Se3#
        • 2.Qxe4#
      • 1...Sbd4
        • 2.Sb4#
        • 2.Qxe4#
      • 1...Rf4!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qf7#
      • 1...Qxd6+
        • 2.Qxd6#
      • 1...Sxd6
        • 2.Qxd6#
      • 1...Rf4
        • 2.Qxe5#
      • 1...Sfd4
        • 2.Se3#
      • 1...Sbd4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(g);CHECK,OGATE,P_SPINS(f),XB(E)::QAR1(F),XQ(g)
    • R(e);N_GUARD,P_SPINS(d),SBLOCK,S_CUTQ(g)::S(A)
    • S(d);P_SPINR(e),SBLOCK,S_CUTQ(g)::S(A)
    • S(f);P_SPINQ(g),SBLOCK,S_CUTR(e)::S(A)
    • S(f);OGATE,P_SPINQ(g),XB(E)::QAR1(F),XS(f)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • Q(g);CHECK,OGATE,P_SPINS(f),XB(E)::QAR1(F),XQ(g)
        • S(f);OGATE,P_SPINQ(g),XB(E)::QAR1(F),XS(f)
      • Refutation
        • R(e);P_SPINS(d)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)
    • Vars
      • Q(g);CHECK,OGATE,P_SPINS(f),XB(E)::QAR1(F),XQ(g)
      • S(f);OGATE,P_SPINQ(g),XB(E)::QAR1(F),XS(f)
      • R(e);N_GUARD,P_SPINS(d),S_CUTB(b)::QAR1(F),XP(i)
      • S(d);P_SPINR(e),SBLOCK,S_CUTQ(g)::S(A)
      • S(f);P_SPINQ(g),SBLOCK,S_CUTR(e)::S(A)
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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).