MESON Chess Problem Database

Problem Display
PID: 121639 (1qB5/7N/2P1P3/5ppr/1R1NPk2/3Q1pR1/p4P1B/K4n2 w - - 0 1)

Siklosi, Miklos

Fonyodi Jarasi TST, 1963

1qB5/7N/2P1P3/5ppr/1R1NPk2/3Q1pR1/p4P1B/K4n2

#2

12 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qxf3#
    • 1...g4
      • 2.Rxf3#
  • Tries
    • 1.Se2+?
      • 1...Ke5
        • 2.Qd4#
        • 2.Qd5#
      • 1...fxe2!
    • 1.Rb5?
      • threat
        • 2.Rxf5#
        • 2.Qxf3#
      • 1...Sxh2
        • 2.Rxf5#
        • 2.Qe3#
      • 1...Sxg3
        • 2.Qxf3#
      • 1...fxe4
        • 2.Rf5#
      • 1...Qe5
        • 2.Qxf3#
      • 1...Sd2
        • 2.Rxf5#
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
        • 2.fxe3#
      • 1...g4
        • 2.Rxf3#
      • 1...Qxb5!
  • Keys
    • 1.e5!
      • threat
        • 2.Qxf5#
      • 1...Kxe5
        • 2.Sxf3#
      • 1...Qxe5
        • 2.Qxf3#
      • 1...Se3
        • 2.Qxe3#
      • 1...g4
        • 2.Rxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(h);P_PINS(G),SBLOCK::QAR1(D),XP(c)
    • P(f);SBLOCK::B(C)+R(E),DCHECK,XP(c)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • P(c);XS(G)
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);P_SPINS(a),XR(E)::QAR1(D),XP(c)
        • P(e);XP(H)::R1(F)
        • Q(h);P_PINS(G)::QAR1(D),XP(c)
        • P(f);SBLOCK::B(C)+R(E),DCHECK,XP(c)
      • Refutation
        • Q(h);XR(F)
  • Actual
    • P(H);
    • Threat
      • QAR1(D),XP(e)
    • Vars
      • K(d);S_FLIGHT,XP(H)::S(G),XP(c)
      • Q(h);P_PINS(G),SBLOCK,XP(H)::QAR1(D),XP(c)
      • S(a);N_GUARD::QAB1(D),XS(a)
      • P(f);SBLOCK::B(C)+R(E),DCHECK,XP(c)
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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).