MESON Chess Problem Database

Problem Display
PID: 239804 (7q/4p2P/1R2P3/R2NkNP1/1QBb2K1/2r2p2/1BP5/rb6 w - - 0 1)

Cristoffanini, Guido

3rd Prize, L'Italia Scacchistica, 1932

7q/4p2P/1R2P3/R2NkNP1/1QBb2K1/2r2p2/1BP5/rb6

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Qe1#
  • Tries
    • 1.Sxc3+?
      • 1...Bc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Rxa5!
    • 1.Sf6+?
      • 1...Bc5
        • 2.Bxc3#
        • 2.Rxc5#
        • 2.Qxc3#
        • 2.Qxc5#
      • 1...Rxa5!
    • 1.Qd6+?
      • 1...Ke4
        • 2.Sg3#
        • 2.Qf4#
      • 1...exd6!
  • Keys
    • 1.Ba2!
      • threat
        • 2.Qxd4#
      • 1...Ke4
        • 2.Sxc3#
      • 1...Bxb6
        • 2.Sxb6#
      • 1...Rc6
        • 2.Qe1#
      • 1...Rd3
        • 2.Sf6#
      • 1...Rc4
        • 2.Qe1#
      • 1...Bg1
        • 2.Sde3#
        • 2.Qf4#
      • 1...Bf2
        • 2.Sde3#
        • 2.Qf4#
      • 1...Be3
        • 2.Sdxe3#
      • 1...Bc5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE,P_SPINB(e),XB(D)::QAR(C)
  • Tries
    • Try
      • S(G);CHECK,XR(c)
      • Refutation
        • R(a);XR(F)
    • Try
      • S(G);CHECK
      • Refutation
        • R(a);XR(F)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(g);XQ(C)
  • Actual
    • B(D);
    • Threat
      • QAB1(C),XB(e)
    • Vars
      • K(f);P-FLIGHT,P_SPINB(e)::S(G),XR(c)
      • B(e);P_SPINR(c),XR(J)::R(F)+S(G),XB(e)
      • R(c);OGATE,P_SPINB(e)::QAR(C)
      • R(c);N_GUARD,P_SPINB(e)::R(F)+S(G)
      • B(e);N_GUARD,P_SPINR(c)::R(F)+S(G),XB(e)
      • B(e);OGATE,P_SPINR(c)::QAB1(C)
HTML5 logo

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).