MESON Chess Problem Database

Problem Display
PID: 110440 (3B4/3p3B/3P2K1/1Qn1p1N1/2P2kPR/3p1pp1/3P2Pn/5R2 w - - 0 1)

Tar, Laszlo

Fonyodi Jarasi TST, 1963

3B4/3p3B/3P2K1/1Qn1p1N1/2P2kPR/3p1pp1/3P2Pn/5R2

#2

12 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxg4
      • 2.Rxf3#
    • 1...Se4
      • 2.Sh3#
  • Tries
    • 1.Qxd7?
      • threat
        • 2.Qf5#
        • 2.Qf7#
      • 1...e4
        • 2.Qf5#
      • 1...Se4
        • 2.Sh3#
        • 2.Se6#
        • 2.Qf5#
      • 1...Se6
        • 2.Qf7#
      • 1...Sxd7!
    • 1.Qxc5?
      • threat
        • 2.Qe3#
      • 1...e4
        • 2.Sh3#
        • 2.Qf5#
      • 1...Sxf1!
  • Keys
    • 1.Sxf3!
      • 1...Ke4
        • 2.Kg5#
      • 1...Sxf1
        • 2.g5#
      • 1...Sxf3
        • 2.g5#
      • 1...Sxg4
        • 2.Sg5#
      • 1...Sb3
        • 2.Qxe5#
      • 1...Sa4
        • 2.Qxe5#
      • 1...Se4
        • 2.Qxe5#
      • 1...Sa6
        • 2.Qxe5#
      • 1...Se6
        • 2.Qxe5#
      • 1...Sb7
        • 2.Qxe5#
      • 1...e4
        • 2.Bg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,P_SPINS(a),XP(E)::R1(A),XP(c)
    • S(f);SBLOCK::S(H)
  • Tries
    • Try
      • Q(G);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);::QAR1(G)
        • S(f);::QAR(G)
      • Refutation
        • S(f);XQ(G)
    • Try
      • Q(G);XS(f)
      • Threat
        • QAB1(G)
      • Refutation
        • S(a);N_SPINP(c),XR(A)
  • Actual
    • S(H);XP(c)
    • Vars
      • K(e);P-FLIGHT::B(K)+K(J)
      • S(a);N_GUARD,XR(A)::R(F)+P(E)
      • S(a);N_GUARD,P_SPINS(a),XS(H)::R(F)+P(E)
      • S(a);N_GUARD,P_SPINS(a),XP(E)::R(A)+S(H)
      • S(f);OGATE::QAB1(G),XP(g)
      • P(g);SBLOCK::B(L)
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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).