MESON Chess Problem Database

Problem Display
PID: 102840 (1B1Qn3/1P2pN2/P1k3rR/8/p2PN3/8/r1b1Kn2/2R4B w - - 0 1)

Feldmann, Tibor (aka Florian, Tibor)

Goethart, Gerhardus Hendrik

Paros, Gyorgy

Salardini, Erio

Zaszlonk, 1939

1B1Qn3/1P2pN2/P1k3rR/8/p2PN3/8/r1b1Kn2/2R4B

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Sc3#
    • 1...Sg4
      • 2.Sed6#
  • Tries
    • 1.Sc3+?
      • 1...Sxh1
        • 2.Se5#
      • 1...Se4
        • 2.Se5#
      • 1...Be4+!
    • 1.Qd7+?
      • 1...Kxd7
        • 2.Sc5#
      • 1...Kb6!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Se5#
      • 1...Kd7
        • 2.Sc5#
      • 1...Sd3
        • 2.Sc5#
      • 1...Sg4
        • 2.Sf6#
      • 1...e5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::B(B)+S(E)
  • Tries
    • Try
      • S(E);CHECK,N_PINB(b)
      • Vars
        • S(c);XB(B)::S(I)
        • S(c);P_SPINS(c)::S(I)
      • Refutation
        • B(b);CHECK,P_SPINB(b)
    • Try
      • Q(K);CHECK
      • Vars
        • K(e);N_SPINB(b),N_SPINR(f),S_FLIGHT,XQ(K)::S(E)
      • Refutation
        • K(e);N_SPINB(b),P-FLIGHT
  • Actual
    • Q(K);
    • Threat
      • S(I)
    • Vars
      • K(e);N_SPINB(b),N_SPINR(f),S_FLIGHT::S(E)
      • S(c);N_GUARD::B(B)+S(E)
      • P(g);::S(I),XP(g)
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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).