MESON Chess Problem Database

Problem Display
PID: 194048 (8/3p1B2/5B1R/2p2kN1/4pp1n/2r3QK/4NR1n/2q2r2 w - - 0 1)

Guidelli, Giorgio

Good Companions, 1917

8/3p1B2/5B1R/2p2kN1/4pp1n/2r3QK/4NR1n/2q2r2

#2

8 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg3+
      • 2.Sxg3#
    • 1...S2f3
      • 2.Qg4#
    • 1...e3
      • 2.Qxf4#
    • 1...f3
      • 2.Qe5#
    • 1...c4
      • 2.Sd4#
    • 1...d5
      • 2.Be6#
    • 1...d6
      • 2.Be6#
  • Tries
    • 1.Bxc3?
      • threat
        • 2.Rf6#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sg6
        • 2.Bxg6#
      • 1...Qxc3!
  • Keys
    • 1.Sh7!
      • threat
        • 2.Rh5#
      • 1...Rxg3+
        • 2.Sxg3#
      • 1...e3
        • 2.Qxf4#
      • 1...S2f3
        • 2.Qg4#
      • 1...S4f3
        • 2.Qg6#
      • 1...f3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(d);CHECK,XQ(C)::S(A),XR(d)
    • S(c);N_PINQ(C),N_SPINP(f)::QAB1(C)
    • P(e);N_PINQ(C)::QAR1(C),XP(f)
    • P(f);N_PINQ(C)::QAR1(C)
    • P(h);N_GUARD::S(A)
    • P(j);N_GUARD::B(H)
  • Tries
    • Try
      • B(F);N_SPINQ(C),XR(d)
      • Threat
        • R1(G)
      • Vars
        • S(c);N_GUARD::QAB1(C),XS(c)
        • S(g);N_GUARD::B(H),XS(g)
      • Refutation
        • Q(a);P_PINQ(C),XB(F)
  • Actual
    • S(E);
    • Threat
      • R(G)
    • Vars
      • R(d);CHECK,XQ(C)::S(A),XR(d)
      • P(e);N_PINQ(C)::QAR1(C),XP(f)
      • S(c);N_PINQ(C),N_SPINP(f)::QAB1(C)
      • S(g);N_PINQ(C),N_SPINP(f)::QAB1(C)
      • P(f);N_PINQ(C)::QAR1(C)
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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).