MESON Chess Problem Database

Problem Display
PID: 228888 (4R3/3p1pP1/N2k1Kn1/N1q1nQ2/1B2P1p1/b4p2/8/2rr4 w - - 0 1)

Cristoffanini, Guido

Chess Amateur (The), 1926

4R3/3p1pP1/N2k1Kn1/N1q1nQ2/1B2P1p1/b4p2/8/2rr4

#2

8 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Qd5#
    • 1...Sc4
      • 2.Qxc5#
    • 1...Sc6
      • 2.Sb7#
    • 1...Sf4
      • 2.Qxe5#
    • 1...Sh4
      • 2.Qxe5#
    • 1...Se7
      • 2.Qxe5#
    • 1...Sf8
      • 2.Qxe5#
      • 2.gxf8Q#
      • 2.gxf8B#
    • 1...Sh8
      • 2.Qxe5#
  • Keys
    • 1.Kg5!
      • threat
        • 2.Qf6#
      • 1...f6+
        • 2.Qxf6#
      • 1...Sd3
        • 2.Qd5#
      • 1...Sc4
        • 2.Qxc5#
      • 1...Sc6
        • 2.Sb7#
      • 1...Sf4
        • 2.Qxe5#
      • 1...Sf8
        • 2.Qxe5#
        • 2.gxf8Q#
        • 2.gxf8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(g);OGATE::QAR1(D)
    • S(g);OGATE::QAB1(D),XQ(f)
    • S(g);SBLOCK::S(C)
    • S(i);N_GUARD::QAB1(D),XS(g)
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • QAR2(D)
    • Vars
      • P(k);CHECK::QAR2(D),XP(k)
      • S(g);OGATE,P_PINQ(D)::QAR1(D)
      • S(g);OGATE,P_PINQ(D)::QAB1(D),XQ(f)
      • S(g);P_PINQ(D),SBLOCK::S(C)
      • S(i);N_GUARD::QAB1(D),XS(g)
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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).