MESON Chess Problem Database

Problem Display
PID: 195091 (4R1N1/5p2/r3bB1K/1P1k2nR/1PN3P1/1B3r2/2P5/2b3nQ w - - 0 1)

Guidelli, Giorgio

3rd Prize, Rivista Scacchistica Italiana, 1918

4R1N1/5p2/r3bB1K/1P1k2nR/1PN3P1/1B3r2/2P5/2b3nQ

#2

12 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Sd2#
    • 1...Se2
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qxf3#
  • Tries
    • 1.Rd8+?
      • 1...Ke4
        • 2.Rd4#
      • 1...Rd6
        • 2.Sd2#
        • 2.Sxd6#
      • 1...Bd7!
  • Keys
    • 1.Be5!
      • threat
        • 2.Sf6#
      • 1...Bxg4+
        • 2.Sd6#
      • 1...Bf5+
        • 2.Sd6#
      • 1...Bd7+
        • 2.Sd6#
      • 1...Bc8+
        • 2.Sd6#
      • 1...S5h3+
        • 2.Sd2#
      • 1...Se4+
        • 2.Se3#
      • 1...Sh7+
        • 2.Sd2#
      • 1...Ke4
        • 2.Sf6#
      • 1...f6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 3
  • Sets
    • R(f);SBLOCK::B(C)+S(E)
    • S(b);N_GUARD::QAB(A),XR(c)
  • Tries
    • Try
      • R(K);CHECK
      • Vars
        • K(d);N_SPINS(e),OGATE,S_FLIGHT::R1(K)
      • Refutation
        • B(g);P_PINB(I),P_SPINB(g)
  • Actual
    • B(I);N_PINS(e)
    • Threat
      • S(L)
    • Vars
      • B(g);CHECK,XP(F)::B(C)+S(E)
      • B(g);CHECK::B(C)+S(E)
      • S(e);CHECK::B(C)+S(E)
      • S(e);CHECK,N_SPINR(c),SBLOCK::B(C)+S(E),DCHECK
      • K(d);S_FLIGHT::S(L)
      • P(h);::S(L),XP(h)
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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).