MESON Chess Problem Database

Problem Display
PID: 122557 (qr1b4/p6N/3B1p2/1R1B1k1p/5n2/Kp3nQP/P4R2/4rb1N w - - 0 1)

Guidelli, Giorgio

Western Daily Mercury, 1913-1914

qr1b4/p6N/3B1p2/1R1B1k1p/5n2/Kp3nQP/P4R2/4rb1N

#2

10 + 12

2643 Good Companions (July) 1917
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1
      • 2.Rxf4#
    • 1...Sd2
      • 2.Rxf4#
    • 1...Sh2
      • 2.Rxf4#
    • 1...Sd4
      • 2.Rxf4#
    • 1...Sh4
      • 2.Rxf4#
    • 1...Se5
      • 2.Rxf4#
    • 1...h4
      • 2.Qg4#
  • Tries
    • 1.Sf8?
      • threat
        • 2.Qxf4#
      • 1...Sxh3
        • 2.Qg6#
      • 1...Sxd5
        • 2.Qf4#
        • 2.Qg6#
      • 1...Re4
        • 2.Be6#
      • 1...Se2
        • 2.Bb7#
        • 2.Qg6#
      • 1...Sg2
        • 2.Qg6#
      • 1...Sd3
        • 2.Qg6#
      • 1...Se6
        • 2.Qg6#
      • 1...Sg6
        • 2.Qxg6#
      • 1...Re5!
    • 1.Qg6+?
      • 1...Sxg6
        • 2.Sg3#
      • 1...Kxg6!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Sg3#
      • 1...Se2
        • 2.Bb7#
      • 1...h4
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • S(d);OGATE,P_SPINS(e)::R1(C),XS(e)
    • P(g);N_GUARD::QAB1(E)
  • Tries
    • Try
      • S(J);
      • Threat
        • QAR1(E),XS(e)
      • Vars
        • S(e);N_GUARD,P_SPINS(d),XP(F)::QAB1(E)
        • R(a);SBLOCK::R(G)+B(H),DCHECK
        • S(e);N_GUARD,P_SPINS(d)::QAB1(E)
        • S(e);N_GUARD,P_SPINS(d)::QAB1(E),XS(e)
      • Refutation
        • R(a);
    • Try
      • Q(E);CHECK
      • Vars
        • S(e);P_SPINS(d),SBLOCK,XQ(E)::S(A)
      • Refutation
        • K(f);S_FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Threat
      • S(A)
    • Vars
      • S(e);N_GUARD,P_SPINS(d),S_CUTB(b),S_CUTR(a)::R(G)+B(H)
      • P(g);N_GUARD::QAB1(E)
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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).