MESON Chess Problem Database

Problem Display
PID: 61610 (6b1/2r3B1/6B1/1n6/3bQ3/2n5/6R1/k6K w - - 0 1)

Kipping, Cyril Stanley

Chess, 1943

6b1/2r3B1/6B1/1n6/3bQ3/2n5/6R1/k6K

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qb1#
      • 2.Qe1#
    • 1...Bf2
      • 2.Qb1#
    • 1...Be3
      • 2.Qb1#
    • 1...Bc5
      • 2.Qb1#
      • 2.Qe1#
    • 1...Bb6
      • 2.Qb1#
      • 2.Qe1#
    • 1...Ba7
      • 2.Qb1#
      • 2.Qe1#
    • 1...Sb1
      • 2.Qxb1#
    • 1...Sd1
      • 2.Qb1#
    • 1...Sa2
      • 2.Qb1#
    • 1...Se2
      • 2.Qb1#
    • 1...Sa4
      • 2.Qb1#
    • 1...Sd5
      • 2.Qb1#
  • Tries
    • 1.Qe1+?
      • 1...Sb1
        • 2.Qxb1#
      • 1...Sd1!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qb2#
      • 1...Bf2
        • 2.Qb1#
      • 1...Sb1
        • 2.Qxb1#
      • 1...Sd1
        • 2.Qb1#
      • 1...Sa2
        • 2.Qb1#
      • 1...Se2
        • 2.Qb1#
      • 1...Sa4
        • 2.Rg1#
        • 2.Qb1#
      • 1...Se4
        • 2.Rg1#
      • 1...Sd5
        • 2.Rg1#
        • 2.Qb1#
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(c);P_SPINS(b)::QAR1(C)
    • S(b);N_GUARD,P_SPINB(c)::QAR1(C),XS(b)
    • S(b);N_GUARD,P_SPINB(c)::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINB(c),P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • S(b);P_SPINB(c),P_SPINS(b)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • B(c);P_SPINS(b)::QAR1(C)
      • S(b);N_GUARD,P_SPINB(c)::QAR1(C),XS(b)
      • S(b);N_GUARD,P_SPINB(c)::QAR1(C)
      • S(b);N_GUARD,P_SPINB(c)::R(B)
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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).