MESON Chess Problem Database

Problem Display
PID: 148237 (1K6/3p3n/1p1k4/1P1PR1P1/1bn3N1/5P2/5B2/2QR4 w - - 0 1)

Shabtay, R

Variantim, 1988

1K6/3p3n/1p1k4/1P1PR1P1/1bn3N1/5P2/5B2/2QR4

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qc7#
    • 1...Sd2
      • 2.Qc7#
    • 1...Sa3
      • 2.Qc7#
    • 1...Se3
      • 2.Qc7#
    • 1...Sa5
      • 2.Qc7#
  • Tries
    • 1.Sh6?
      • threat
        • 2.Sf7#
      • 1...Kxe5
        • 2.Bg3#
      • 1...Sxe5
        • 2.Sf5#
      • 1...Sxg5!
    • 1.Qf4?
      • threat
        • 2.Re6#
      • 1...Sxe5
        • 2.Qxe5#
        • 2.Qxb4#
      • 1...Se3
        • 2.Qxb4#
      • 1...Sd2
        • 2.Qxb4#
      • 1...Bd2!
    • 1.Qxc4?
      • threat
        • 2.Qxb4#
        • 2.Qc7#
      • 1...Bd2
        • 2.Qc7#
      • 1...Be1
        • 2.Qc7#
      • 1...Ba3
        • 2.Qc7#
      • 1...Bc3
        • 2.Qc7#
      • 1...Ba5
        • 2.Qc7#
      • 1...Bc5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sxc4#
      • 1...Kc5
        • 2.d6#
      • 1...Kxe5
        • 2.Bg3#
      • 1...Sxe3
        • 2.Qc7#
      • 1...Sxe5
        • 2.Sf5#
      • 1...Sb2
        • 2.Qc7#
      • 1...Sd2
        • 2.Qc7#
      • 1...Sa3
        • 2.Qc7#
      • 1...Sa5
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE::QAB1(A)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XR(H)::B(C)
        • S(b);SBLOCK,XR(H)::S(E)
      • Refutation
        • S(f);XP(I)
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(H),DCHECK
      • Vars
        • S(b);OGATE::QAB(A),XB(a)
      • Refutation
        • B(a);
    • Try
      • Q(A);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB1(A)
      • Refutation
        • B(a);
  • Actual
    • S(E);
    • Threat
      • S(E),XS(b)
    • Vars
      • K(d);OGATE,P_SPINS(b),S_FLIGHT::R(H)+P(G)
      • K(d);OGATEB,S_FLIGHT,XR(H)::B(C)
      • S(b);OGATE,XS(E)::QAB1(A)
      • S(b);SBLOCK,XR(H)::S(E)
      • S(b);OGATE::QAB1(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).