MESON Chess Problem Database

Problem Display
PID: 222803 (8/3Rpqr1/BK1B4/3Np1N1/3k4/1np5/2b2b2/7Q w - - 0 1)

Gold, Samuel

Brooklyn Chess Chronicle, 1884

8/3Rpqr1/BK1B4/3Np1N1/3k4/1np5/2b2b2/7Q

#2

7 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Se6#
    • 1...Qe6
      • 2.Sxe6#
    • 1...Qe8
      • 2.Se6#
    • 1...Qf4
      • 2.Se6#
    • 1...Qf8
      • 2.Se6#
    • 1...Bd1
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Sa1
      • 2.Bc5#
    • 1...Sc1
      • 2.Bc5#
    • 1...Sd2
      • 2.Bc5#
    • 1...Sa5
      • 2.Bc5#
    • 1...Sc5
      • 2.Bxc5#
  • Tries
    • 1.Qd1+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Bc5#
      • 1...Bxd1!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qc4#
      • 1...Kxd5+
        • 2.Bc5#
      • 1...Qxd5
        • 2.Qxf2#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Bc5#
      • 1...Sa5
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • Q(h);N_GUARD::S(C)
    • Q(h);N_GUARD,P_PINB(F)::S(C),XQ(h)
    • B(a);N_GUARD::QAR1(A)
    • B(a);N_GUARD::QAR1(A),XB(a)
    • S(c);N_GUARD::B(F)
    • S(c);N_GUARD::B(F),XS(c)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
        • S(c);P_SPINS(c)::B(F)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(e);CHECK,P-FLIGHT,XS(B)::R(G)+B(F)
      • Q(h);N_GUARD,SBLOCK,XS(B)::QAB(A),XB(b)
      • B(a);N_GUARD::QAR1(A),XB(a)
      • S(c);N_GUARD::B(F)
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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).