MESON Chess Problem Database

Problem Display
PID: 103308 (5N2/2Qp2BN/K1P1P3/2k5/1p6/1P6/3P4/8 w - - 0 1)

Gamage, Frederick

Checkmate, 1901

5N2/2Qp2BN/K1P1P3/2k5/1p6/1P6/3P4/8

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...dxc6
      • 2.Qe5#
    • 1...d5
      • 2.Sd7#
      • 2.d4#
  • Tries
    • 1.Kb7?
      • 1...Kb5
        • 2.Qb6#
      • 1...Kd5
        • 2.Qe5#
      • 1...dxc6
        • 2.Qe5#
        • 2.Qxc6#
      • 1...dxe6
        • 2.Qe5#
      • 1...d6
        • 2.Qa5#
      • 1...d5!
    • 1.Be5?
      • threat
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...Kd5!
  • Keys
    • 1.Sf6!
      • 1...Kd4
        • 2.Qd6#
      • 1...dxc6
        • 2.Qe5#
      • 1...dxe6
        • 2.Sxe6#
      • 1...d5
        • 2.S6d7#
      • 1...d6
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD,P_SPINP(c),SBLOCK,XP(D)::QAR2(F)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
        • P(c);N_GUARD,XP(E)::QAR2(F)
        • P(c);SBLOCK::QAR2(F)
      • Refutation
        • P(c);
    • Try
      • B(G);
      • Threat
        • QAB1(F)
      • Vars
        • P(c);::QAB1(F),XP(c)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(H);
    • Vars
      • K(b);S_FLIGHT::QAR2(F)
      • P(c);N_GUARD,P_SPINP(c),SBLOCK,XP(D)::QAR2(F)
      • P(c);XP(E)::S(I),XP(c)
      • P(c);SBLOCK::S(H)
      • P(c);SBLOCK::QAB1(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).