MESON Chess Problem Database

Problem Display
PID: 243294 (1Q6/1N2NnK1/2P1kP2/4P3/1bPrn1P1/6p1/2B1R3/8 w - - 0 1)

Andersen, Idon Bruno Hovedskou

Skakbladet, 1952

1Q6/1N2NnK1/2P1kP2/4P3/1bPrn1P1/6p1/2B1R3/8

#2

11 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.cxd5#
    • 1...Sd2
      • 2.Bf5#
    • 1...Sf2
      • 2.Bf5#
    • 1...Sc3
      • 2.Bf5#
    • 1...Sc5
      • 2.Bf5#
    • 1...Seg5
      • 2.Bf5#
  • Tries
    • 1.Sc5+?
      • 1...Sxc5
        • 2.Bf5#
      • 1...Bxc5!
    • 1.Qc8+?
      • 1...Kxe5
        • 2.Sg6#
        • 2.Qf5#
      • 1...Rd7!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sf4#
      • 1...Bf8+
        • 2.Sxf8#
      • 1...Sxf6
        • 2.Bf5#
      • 1...Rd6
        • 2.Qe8#
      • 1...Bd2
        • 2.Sf8#
        • 2.Qe8#
      • 1...Bd6
        • 2.Qc8#
      • 1...Sd2
        • 2.Bf5#
      • 1...Sf2
        • 2.Bf5#
      • 1...Sc3
        • 2.Bf5#
      • 1...Sc5
        • 2.Sf8#
        • 2.Bf5#
        • 2.Qe8#
      • 1...Seg5
        • 2.Bf5#
      • 1...Sed6
        • 2.Sf8#
      • 1...Sfd6
        • 2.Sd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(c);OGATE::P(C),XR(c)
    • S(d);OGATE::B(A)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • S(d);OGATE,XS(H)::B(A)
      • Refutation
        • B(b);XS(H)
    • Try
      • Q(K);CHECK
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • B(b);CHECK,N_GUARD::S(I),XB(b)
      • S(d);OGATE,XP(G)::B(A)
      • R(c);S_CUTB(b)::QAR2(K)
      • B(b);S_CUTR(c)::QAB(K)
      • S(d);OGATE::B(A)
      • S(d);S_CUTB(b)::S(I)
      • S(f);N_GUARD,S_CUTR(c)::S(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).