MESON Chess Problem Database

Problem Display
PID: 194108 (4n1N1/3p3r/2b3p1/2RPkP2/1K2N2p/2PP4/3Q4/8 w - - 0 1)

Leopold, Dr Rudolf L

Vasarnapi Ujsag, 1917

4n1N1/3p3r/2b3p1/2RPkP2/1K2N2p/2PP4/3Q4/8

#2

9 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qg5#
    • 1...Ba4
      • 2.d6#
    • 1...Bb5
      • 2.d6#
    • 1...Sd6
      • 2.dxc6#
  • Tries
    • 1.Se7?
      • threat
        • 2.Qh2#
      • 1...gxf5
        • 2.Sg6#
      • 1...Rxe7!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qh2#
      • 1...Kxd6
        • 2.Qf4#
        • 2.Qh2#
      • 1...Sxd6
        • 2.dxc6#
      • 1...gxf5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(b);OGATEB,P-FLIGHT,XP(H)::QAR1(A)
    • B(c);N_GUARD::R(F)+P(G)
    • S(g);S_CUTP(e)::R(F)+P(G),XB(c)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAB(A)
      • Vars
        • P(d);SBLOCK,XP(H)::S(I)
      • Refutation
        • R(f);XS(I)
  • Actual
    • S(E);
    • Threat
      • QAB(A)
    • Vars
      • S(g);SBLOCK,XS(E)::R(F)+P(G),XB(c)
      • P(d);SBLOCK,XP(H)::S(E)
HTML5 logo

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).