MESON Chess Problem Database

Problem Display
PID: 139872 (8/2B5/B1p1p3/3k1bR1/1P1pN3/2b1r3/8/1Kn1R2Q w - - 0 1)

Karseladze, V

Shakhmaty v SSSR, 1949

8/2B5/B1p1p3/3k1bR1/1P1pN3/2b1r3/8/1Kn1R2Q

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sxc3#
      • 2.Sf6#
    • 1...Rxe4
      • 2.Qxe4#
    • 1...Sd3
      • 2.Sxc3#
      • 2.Sf6#
  • Tries
    • 1.Rxf5+?
      • 1...e5
        • 2.Rxe5#
      • 1...exf5!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qe5#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Rxe4
        • 2.Qd8#
      • 1...c5
        • 2.Qa8#
      • 1...e5
        • 2.Qxe5#
      • 1...Sd3
        • 2.Sf6#
      • 1...d3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE,P_SPINR(c),XS(E)::QAB1(C),XR(c)
  • Tries
    • Try
      • R(F);CHECK,N_SPINS(E),XB(f)
      • Vars
        • P(h);P_SPINP(h)::R1(F),XP(h)
      • Refutation
        • P(h);XR(F)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(e);N_SPINB(f),OGATEB,P_SPINR(c),S_FLIGHT,XS(E)::QAB(C)
      • R(c);XS(E)::QAR(C)
      • P(g);OGATEB::QAB(C)
      • P(h);N_SPINB(f)::QAR1(C),XP(h)
      • S(a);N_PINS(E)::S(E)
      • P(d);N_PINS(E)::S(E),XB(b)
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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).