MESON Chess Problem Database

Problem Display
PID: 276659 (6K1/1p4n1/1R1n4/P1kPRp2/r1p1P3/2Qp1rN1/3P4/2Nb4 w - - 0 1)

Fica, Alexander

Labai, Zoltan

Best Problems, 2024

6K1/1p4n1/1R1n4/P1kPRp2/r1p1P3/2Qp1rN1/3P4/2Nb4

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Sxd3#
    • 1...Rf2
      • 2.Sxd3#
    • 1...Rf4
      • 2.Sxd3#
    • 1...Be2
      • 2.Sb3#
    • 1...Bb3
      • 2.Sxb3#
    • 1...Sxe4
      • 2.d6#
    • 1...Sb5
      • 2.d6#
    • 1...Sc8
      • 2.d6#
    • 1...Sde8
      • 2.d6#
    • 1...Se6
      • 2.dxe6#
  • Tries
    • 1.Sce2?
      • threat
        • 2.Qd4#
      • 1...dxe2
        • 2.d4#
      • 1...Sb5
        • 2.d6#
      • 1...Se6
        • 2.dxe6#
      • 1...Bxe2!
    • 1.Sxf5?
      • threat
        • 2.Qd4#
      • 1...Rxf5
        • 2.Sxd3#
      • 1...Sdxf5
        • 2.d6#
      • 1...Sb5
        • 2.d6#
      • 1...Se6
        • 2.dxe6#
      • 1...Sgxf5!
  • Keys
    • 1.Sge2!
      • threat
        • 2.Qd4#
      • 1...Bxe2
        • 2.Sb3#
      • 1...dxe2
        • 2.d4#
      • 1...Sb5
        • 2.d6#
      • 1...Se6
        • 2.dxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::S(A),XP(b)
    • B(a);N_GUARD::S(A)
    • B(a);N_GUARD::S(A),XB(a)
    • S(h);OGATE,XP(E)::R(H)+P(G)
    • S(h);OGATE::R(H)+P(G)
    • S(j);OGATE::R(H)+P(G),XS(j)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);OGATE,XS(A)::P(B)
        • S(h);OGATE::R(H)+P(G)
        • S(j);OGATE::R(H)+P(G),XS(j)
      • Refutation
        • B(a);XS(A)
    • Try
      • S(D);XP(g)
      • Threat
        • QAB1(C)
      • Vars
        • R(c);N_GUARD,XS(D)::S(A),XP(b)
        • S(h);OGATE,XS(D)::R(H)+P(G)
        • S(h);OGATE::R(H)+P(G)
        • S(j);OGATE::R(H)+P(G),XS(j)
      • Refutation
        • S(j);XS(D)
  • Actual
    • S(D);
    • Threat
      • QAB1(C)
    • Vars
      • B(a);N_GUARD,XS(D)::S(A)
      • P(b);OGATE,XS(D)::P(B)
      • S(h);OGATE::R(H)+P(G)
      • S(j);OGATE::R(H)+P(G),XS(j)
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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).