MESON Chess Problem Database

Problem Display
PID: 9900 (5R1n/3R2N1/1N6/4p3/1r1PkP1p/r2pb2n/6PK/1B2Q3 w - - 0 1)

Livshits, Eduard Yakovlevich

Problem (Zagreb), 1960

5R1n/3R2N1/1N6/4p3/1r1PkP1p/r2pb2n/6PK/1B2Q3

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...exd4
      • 2.Re7#
    • 1...exf4
      • 2.Re8#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sd2#
        • 2.Qxe3#
      • 1...exd4
        • 2.Sd2#
      • 1...exf4
        • 2.Sd2#
        • 2.Re8#
      • 1...Sf7
        • 2.Qxe3#
      • 1...Ra2
        • 2.Qxe3#
      • 1...Rb2
        • 2.Qxe3#
      • 1...Rxc4!
    • 1.Sf5?
      • threat
        • 2.Qxe3#
      • 1...Kxf4
        • 2.Qxh4#
      • 1...exd4
        • 2.Sd6#
      • 1...exf4
        • 2.Re7#
      • 1...Sf7!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qxe3#
      • 1...Kxd4
        • 2.Qxb4#
      • 1...exd4
        • 2.Re8#
      • 1...exf4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(h);OGATEB,SBLOCK,XP(E)::R(H)
    • P(h);OGATEB,SBLOCK,XP(F)::R(J)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);XP(E)::S(G)
        • S(i);::QAR1(B),XB(c)
        • R(a);P_PINP(C)::QAR1(B),XB(c)
        • R(e);P_PINP(C)::QAR1(B),XB(c)
      • Refutation
        • R(e);XS(G)
    • Try
      • S(I);
      • Threat
        • QAR1(B),XB(c)
      • Vars
        • K(f);N_SPINB(c),N_SPINP(b),OGATEB,P-FLIGHT,XP(F)::QAR2(B),XP(g)
        • P(h);SBLOCK,XP(E)::S(I)
        • P(h);OGATEB,SBLOCK,XP(F)::R(H)
      • Refutation
        • S(i);
  • Actual
    • S(G);
    • Threat
      • QAR1(B),XB(c)
    • Vars
      • K(f);N_SPINB(c),N_SPINP(b),OGATEB,P-FLIGHT,XP(E)::QAR2(B),XR(e)
      • P(h);OGATEB,SBLOCK,XP(E)::R(J)
      • P(h);SBLOCK,XP(F)::S(G)
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).