MESON Chess Problem Database

Problem Display
PID: 46836 (2rB4/2Q5/4P3/N2p4/pP1kn2p/2p3Rr/Kn1PPP2/8 w - - 0 1)

Piatesi, Antonio

1st Prize, Probleemblad 109. TT, 1961

2rB4/2Q5/4P3/N2p4/pP1kn2p/2p3Rr/Kn1PPP2/8

#2

10 + 9

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.e3#
    • 1...Sc4
      • 2.Sc6#
    • 1...a3
      • 2.Sb3#
  • Tries
    • 1.Rg4?
      • threat
        • 2.Bf6#
        • 2.Qg7#
      • 1...Rxc7
        • 2.Bf6#
      • 1...Rxd8
        • 2.Qg7#
      • 1...Sd3
        • 2.dxc3#
      • 1...Sc4
        • 2.Sc6#
      • 1...Rf3!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Bf6#
      • 1...Rxd8
        • 2.dxc3#
      • 1...Sd3
        • 2.e3#
      • 1...Sc4
        • 2.dxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(a);SBLOCK::P(C)
    • S(a);SBLOCK::S(G)
    • P(d);N_GUARD::S(G)
  • Tries
    • Try
      • R(E);P_PINS(f)
      • Threat
        • DUALS(2)
      • Vars
        • R(i);XQ(I)::B(J)
        • R(i);XB(J)::QAB(I)
        • S(a);S_CUTR(c)::P(B),XP(b)
        • S(a);SBLOCK::S(G)
      • Refutation
        • R(c);
  • Actual
    • Q(I);P_PINS(f)
    • Threat
      • B(J)
    • Vars
      • R(i);N_GUARD,XB(J)::P(B),XP(b)
      • S(a);SBLOCK::P(C)
      • S(a);S_CUTR(i)::P(B),XP(b)
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).