MESON Chess Problem Database

Problem Display
PID: 87783 (3B3K/3R2N1/3N2kp/4p2p/3r4/3n4/2B3b1/6Q1 w - - 0 1)

Goldschmidt, Josef

Shahaf, Eliahu (formerly Feigin, Eliahu)

American Chess Problemist, 1952

3B3K/3R2N1/3N2kp/4p2p/3r4/3n4/2B3b1/6Q1

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qxg2#
    • 1...Rxd6
      • 2.Qxg2#
    • 1...e4
      • 2.Qxg2#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sxe5#
      • 1...Re4
        • 2.Qb6#
      • 1...Rd5
        • 2.Qxg2#
      • 1...e4
        • 2.Qxg2#
      • 1...Rxc4!
    • 1.Sgf5?
      • threat
        • 2.Rg7#
      • 1...Rxd6
        • 2.Sh4#
      • 1...h4!
    • 1.Bxd3+?
      • 1...Re4
        • 2.Bxe4#
        • 2.Qxg2#
      • 1...e4
        • 2.Qxg2#
      • 1...Rxd3!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sxe5#
      • 1...Re4
        • 2.Qb6#
      • 1...Rd5
        • 2.Qxg2#
      • 1...e4
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::QAR(A),XB(a)
    • R(c);N_GUARD,XS(C)::QAR(A),XB(a)
    • P(d);N_SPINS(b),S_CUTR(c)::QAR(A),XB(a)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C),XP(d)
      • Vars
        • R(c);N_SPINS(b),OGATE::QAR(A)
        • R(c);N_GUARD::QAR(A),XB(a)
        • P(d);N_SPINS(b),S_CUTR(c)::QAR(A),XB(a)
      • Refutation
        • R(c);XS(C)
    • Try
      • S(E);N_PINS(b)
      • Threat
        • R1(D)
      • Vars
        • R(c);N_GUARD,XS(C)::S(E)
      • Refutation
        • P(e);
    • Try
      • B(B);CHECK,XS(b)
      • Vars
        • P(d);P_SPINP(d)::QAR(A),XB(a)
      • Refutation
        • R(c);XB(B)
  • Actual
    • S(C);
    • Threat
      • S(C),XP(d)
    • Vars
      • R(c);N_SPINS(b),OGATE::QAR(A)
      • R(c);N_GUARD::QAR(A),XB(a)
      • P(d);N_SPINS(b),S_CUTR(c)::QAR(A),XB(a)
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).