MESON Chess Problem Database

Problem Display
PID: 61776 (N1R5/1pb1p3/n1b4Q/ppk5/1r1p3K/B2R2p1/B3N3/8 w - - 0 1)

Coombes, TA

Chess, 1943

N1R5/1pb1p3/n1b4Q/ppk5/1r1p3K/B2R2p1/B3N3/8

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Qb6#
    • 1...Bg2
      • 2.Qb6#
    • 1...Bf3
      • 2.Qb6#
    • 1...Be4
      • 2.Qb6#
    • 1...Bd5
      • 2.Qb6#
    • 1...Bd7
      • 2.Qb6#
    • 1...Be8
      • 2.Qb6#
    • 1...Bd6
      • 2.Qc1#
  • Keys
    • 1.Rxd4!
      • threat
        • 2.Qc1#
      • 1...Bf4
        • 2.Rd5#
      • 1...Be4
        • 2.Qb6#
      • 1...Bd5
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • B(h);OGATE,P_SPINB(j)::QAB1(F)
    • B(j);P_SPINB(h),SBLOCK::QAR(F)
  • Actual
    • R(D);P_SPINR(D),XP(c)
    • Threat
      • QAR(F)
    • Vars
      • B(j);N_PINR(D),P_SPINB(h)::R1(D)
      • B(h);N_PINR(D),OGATE,P_SPINB(j)::QAB1(F)
      • B(h);OGATE,P_SPINB(j)::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).