MESON Chess Problem Database

Problem Display
PID: 136681 (1n6/7B/1N1R3P/4pp2/1p2k3/3r2R1/3Bp3/1Q2n2K w - - 0 1)

Gold, Samuel

Toronto Globe, 1881

1n6/7B/1N1R3P/4pp2/1p2k3/3r2R1/3Bp3/1Q2n2K

#2

8 + 8

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qxd3#
    • 1...Sf3
      • 2.Rg4#
      • 2.Qxd3#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sf6#
      • 1...Kd4
        • 2.Qxb4#
      • 1...Sd7!
    • 1.Sd7?
      • threat
        • 2.Sc5#
        • 2.Sf6#
      • 1...Sa6
        • 2.Sf6#
      • 1...Sxd7!
    • 1.Bg5?
      • threat
        • 2.Re3#
      • 1...Sg2
        • 2.Qxd3#
      • 1...Sf3
        • 2.Rg4#
        • 2.Qxd3#
      • 1...Sc2!
    • 1.Rdxd3?
      • threat
        • 2.Rg4#
        • 2.Qxb4#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Sg2
        • 2.Rd5#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
        • 2.Qxb4#
      • 1...Sf3
        • 2.Rd5#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
        • 2.Rg4#
      • 1...Sa6
        • 2.Rg4#
      • 1...Sc6
        • 2.Rg4#
      • 1...b3
        • 2.Rg4#
      • 1...Sc2!
    • 1.Rd4+?
      • 1...Kxd4
        • 2.Qxb4#
      • 1...exd4!
  • Keys
    • 1.Rdg6!
      • threat
        • 2.R6g4#
      • 1...Kd4
        • 2.Qxb4#
      • 1...f4
        • 2.Rd6#
      • 1...Sg2
        • 2.Qxd3#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(A),XR(c)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • K(e);N_SPINP(g),N_SPINR(c),P-FLIGHT::QAR2(A),XP(d)
      • Refutation
        • S(h);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(h);::S(E)
      • Refutation
        • S(h);XS(E)
    • Try
      • B(C);
      • Threat
        • R1(D)
      • Vars
        • S(a);N_GUARD::QAB1(A),XR(c)
      • Refutation
        • S(a);N_SPINR(c)
    • Try
      • R(F);XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);OGATE,P_SPINS(a),XR(F)::QAB1(A),XS(a)
        • S(h);::R(D)
        • P(d);::R(D)
      • Refutation
        • S(a);
    • Try
      • R(F);CHECK
      • Vars
        • K(e);N_SPINP(g),N_SPINR(c),P-FLIGHT,XR(F)::QAR2(A),XP(d)
      • Refutation
        • P(f);XR(F)
  • Actual
    • R(F);N_PINP(g)
    • Threat
      • R(F)
    • Vars
      • K(e);N_SPINR(c),P-FLIGHT::QAR2(A),XP(d)
      • P(g);OGATEB::B(H)+R(F)
      • S(a);N_GUARD::QAB1(A),XR(c)
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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).