MESON Chess Problem Database

Problem Display
PID: 62124 (1Q1Nn2B/6r1/2pq4/1R1bk1P1/8/4K3/4N3/1B6 w - - 0 1)

Ceder, Sven Ture

Tidskrift for Schack, 1942

1Q1Nn2B/6r1/2pq4/1R1bk1P1/8/4K3/4N3/1B6

#2

8 + 6

45 Schach 1951

SOLUTION

  • SOUND
  • Tries
    • 1.Bxg7+?
      • 1...Sf6
        • 2.Bxf6#
      • 1...Sxg7!
    • 1.Qxd6+?
      • 1...Sxd6
        • 2.Bxg7#
      • 1...Kxd6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg6#
        • 2.Sxc6#
        • 2.Sf7#
      • 1...Qxb8
        • 2.Sf7#
      • 1...cxb5
        • 2.Sg6#
      • 1...Qc7
        • 2.Sf7#
      • 1...Sf6
        • 2.Sxc6#
      • 1...Sc7
        • 2.Sf7#
      • 1...c5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(H);CHECK,XR(e)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::B(H),XS(f)
      • Refutation
        • S(f);XB(H)
    • Try
      • Q(F);CHECK,XQ(d)
      • Vars
        • S(f);SBLOCK,XQ(F)::B(H),XR(e)
      • Refutation
        • K(b);N_SPINB(a),N_SPINR(e),S_FLIGHT,XQ(F)
  • Actual
    • S(B);
    • Threat
      • DUALS(3)
    • Vars
      • Q(d);N_SPINQ(d),XQ(F)::S(G)
      • P(c);N_SPINB(a),XR(D)::S(B)
      • Q(d);::S(G)
      • S(f);N_SPINR(e)::S(G),XP(c)
      • S(f);N_SPINQ(d)::S(G)
      • P(c);N_SPINB(a)::S(B)
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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).