MESON Chess Problem Database

Problem Display
PID: 276925 (8/2P5/3p1R2/2nNk1p1/6P1/1p1PKP2/1P3N2/Q6B w - - 0 1)

Garaj, Ivan

Sarkits, Anatoly L

Pat a Mat, 2008

8/2P5/3p1R2/2nNk1p1/6P1/1p1PKP2/1P3N2/Q6B

#2

11 + 5

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Rf5#
  • Tries
    • 1.Qa7?
      • 1...Sxd3
        • 2.Qd4#
      • 1...Se4
        • 2.Qd4#
      • 1...Sa4
        • 2.Qd4#
      • 1...Sa6
        • 2.Qd4#
      • 1...Se6
        • 2.Rf5#
      • 1...Sb7
        • 2.Qd4#
      • 1...Sd7
        • 2.Qd4#
      • 1...Kxd5!
    • 1.Qa8?
      • threat
        • 2.d4#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...Se6
        • 2.Rf5#
      • 1...Sb7!
    • 1.c8Q?
      • threat
        • 2.Rf5#
        • 2.Qf5#
      • 1...Kxd5
        • 2.Rf5#
      • 1...Se6
        • 2.Rf5#
        • 2.Qxe6#
      • 1...Sd7!
  • Keys
    • 1.Qa5!
      • 1...Kxd5
        • 2.f4#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...Sa4
        • 2.d4#
      • 1...Se4
        • 2.d4#
      • 1...Sa6
        • 2.d4#
      • 1...Se6
        • 2.Rf5#
      • 1...Sb7
        • 2.d4#
      • 1...Sd7
        • 2.d4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R1(J)
  • Tries
    • Try
      • Q(A);
      • Vars
        • S(b);OGATE,XP(E)::QAB1(A)
        • S(b);OGATE::QAB1(A)
        • S(b);SBLOCK::R1(J)
      • Refutation
        • K(c);P-FLIGHT,XS(I)
    • Try
      • Q(A);
      • Threat
        • P(E)
      • Vars
        • S(b);XP(E)::S(D),XS(b)
        • S(b);SBLOCK::R1(J)
      • Refutation
        • S(b);
    • Try
      • P(K);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT,XS(I)::R(J)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT,P_SPINS(b),S_CUTP(d),XS(I)::B(B)+P(G)
      • S(b);XP(E)::S(D),XS(b)
      • S(b);::P(E)
      • S(b);SBLOCK::R1(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).