MESON Chess Problem Database

Problem Display
PID: 268320 (4N3/p1r5/KpP5/Rn1pk3/1QP2pP1/p4p2/rN2b3/BB2R3 w - - 0 1)

Cristoffanini, Guido

Swiat Szachowy, 1933

4N3/p1r5/KpP5/Rn1pk3/1QP2pP1/p4p2/rN2b3/BB2R3

#2

11 + 11

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Qd6#
    • 1...dxc4
      • 2.Qd6#
    • 1...d4
      • 2.Qd6#
  • Tries
    • 1.Rxe2+?
      • 1...Kd4
        • 2.cxb5#
        • 2.c5#
      • 1...fxe2!
  • Keys
    • 1.cxd5!
      • threat
        • 2.Qe4#
      • 1...Sc3+
        • 2.Sd3#
      • 1...Sd4+
        • 2.Sc4#
      • 1...Sd6+
        • 2.Sd3#
        • 2.Sc4#
      • 1...Kxd5
        • 2.Qd6#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(f);N_GUARD,P_PINP(F),P_SPINP(g),SBLOCK::QAB1(E)
    • P(g);P_SPINS(f),XP(F)::QAB1(E)
    • P(g);P_SPINS(f)::QAB1(E)
  • Tries
    • Try
      • R(C);CHECK,XB(b)
      • Refutation
        • P(d);XR(C)
  • Actual
    • P(F);XP(g)
    • Threat
      • QAR1(E)
    • Vars
      • S(f);CHECK::S(D)
      • K(h);N_GUARD,N_SPINB(b),P-FLIGHT,P_SPINS(f),XP(F)::QAR1(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).