MESON Chess Problem Database

Problem Display
PID: 103310 (8/3p4/1Q6/4k2n/1NR3b1/7p/3P3K/1B6 w - - 0 1)

Gamage, Frederick

Checkmate, 1901

8/3p4/1Q6/4k2n/1NR3b1/7p/3P3K/1B6

#2

6 + 5

119 Tidskrift for Schack 1909
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Qd4#
    • 1...Sf4
      • 2.d4#
  • Tries
    • 1.Sd3+?
      • 1...Kd5
        • 2.Rd4#
      • 1...Kf5!
  • Keys
    • 1.Rf4!
      • 1...Kxf4
        • 2.Qe3#
      • 1...Sxf4
        • 2.d4#
      • 1...d6
        • 2.Qe3#
      • 1...Bd1
        • 2.Rf5#
      • 1...Be2
        • 2.Rf5#
      • 1...Bf3
        • 2.Rf5#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Be6
        • 2.Qd4#
      • 1...Sg3
        • 2.Qf6#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sg7
        • 2.Qf6#
      • 1...d5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAB1(F)
    • S(d);SBLOCK::P(B)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT::R1(E)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(c);S_FLIGHT,XR(E)::QAB1(F)
      • S(d);SBLOCK,XR(E)::P(B)
      • P(e);SBLOCK::QAR2(F)
      • B(b);N_GUARD::R1(E)
      • B(b);N_GUARD::R1(E),XB(b)
      • B(b);SBLOCK::QAB1(F)
      • S(d);N_GUARD::QAB1(F)
      • S(d);N_GUARD::QAB1(F),XS(d)
      • P(e);SBLOCK::S(D)
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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).