MESON Chess Problem Database

Problem Display
PID: 72345 (b3R3/1B2N3/r1n2ppn/p1Kp3q/r1p1k1P1/p3PNR1/3BQ3/8 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1953

b3R3/1B2N3/r1n2ppn/p1Kp3q/r1p1k1P1/p3PNR1/3BQ3/8

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Sxc6#
    • 1...Qh2
      • 2.Sxc6#
    • 1...Qh3
      • 2.Sxc6#
    • 1...Qh4
      • 2.Sxc6#
    • 1...Sb4
      • 2.Qxc4#
    • 1...Sd4
      • 2.exd4#
    • 1...d4+
      • 2.Sf5#
    • 1...f5
      • 2.Sxc6#
  • Tries
    • 1.Sg5+?
      • 1...Ke5
        • 2.Sxc6#
        • 2.Sxg6#
      • 1...fxg5
        • 2.Sxc6#
      • 1...Qxg5!
    • 1.Bc3?
      • threat
        • 2.Sd2#
      • 1...d4+
        • 2.Sf5#
      • 1...Sd4!
  • Keys
    • 1.Bc1!
      • threat
        • 2.Qc2#
      • 1...d4+
        • 2.Sf5#
      • 1...Qh2
        • 2.Sxc6#
      • 1...Sb4
        • 2.Qxc4#
      • 1...Sd4
        • 2.exd4#
      • 1...Se5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(g);N_GUARD::R(J)+S(I),XS(i)
    • S(i);N_GUARD,P_SPINP(f),S_CUTR(b)::QAR2(B),XP(c)
    • S(i);OGATE,P_SPINP(f)::QAR(B)+P(C),XS(i)
    • P(f);CHECK,P_SPINS(i)::R(J)+S(I)
    • P(j);S_CUTQ(g)::R(J)+S(I),XS(i)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • P(j);XS(D)::R(J)+S(I),XS(i)
      • Refutation
        • Q(g);XS(D)
    • Try
      • B(A);
      • Threat
        • S(D)
      • Vars
        • P(f);CHECK,P_SPINS(i)::R(J)+S(I)
      • Refutation
        • S(i);P_SPINP(f)
  • Actual
    • B(A);
    • Threat
      • QAB(B)
    • Vars
      • P(f);CHECK,P_SPINS(i)::R(J)+S(I)
      • Q(g);N_GUARD::R(J)+S(I),XS(i)
      • S(i);N_GUARD,P_SPINP(f),S_CUTR(b)::QAR2(B),XP(c)
      • S(i);OGATE,P_SPINP(f)::QAR(B)+P(C),XS(i)
      • S(i);P_SPINP(f),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).