MESON Chess Problem Database

Problem Display
PID: 6694 (3RQ1K1/4p3/8/3n1PRN/2N1k2p/2Pp1p2/b3pqnb/2B3r1 w - - 0 1)

Mari, Alberto

2/3 Prize, Tijdschrift vd KNSB, 1932

3RQ1K1/4p3/8/3n1PRN/2N1k2p/2Pp1p2/b3pqnb/2B3r1

#2

9 + 12

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc3
      • 2.Sf6#
    • 1...Se3
      • 2.Rd4#
    • 1...Sb4
      • 2.Sf6#
    • 1...Sf4
      • 2.Sf6#
    • 1...Sb6
      • 2.Sf6#
    • 1...Sf6+
      • 2.Sxf6#
    • 1...Sc7
      • 2.Sf6#
    • 1...e5
      • 2.Sd6#
  • Tries
    • 1.Qxe7+?
      • 1...Be5
        • 2.Sd6#
        • 2.Qxe5#
      • 1...Sxe7+!
  • Keys
    • 1.f6!
      • threat
        • 2.Qg6#
      • 1...Sxf6+
        • 2.Sxf6#
      • 1...Sge3
        • 2.Sd2#
      • 1...Sgf4
        • 2.Sd6#
      • 1...Sde3
        • 2.Rd4#
      • 1...Sdf4
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(k);N_GUARD,P_PINS(C),XP(B)::S(F)
    • S(k);OGATE,P_PINS(C)::R1(G)
    • S(k);N_GUARD,P_PINS(C)::S(F)
    • S(k);CHECK,N_GUARD,P_PINS(C)::S(F),XS(k)
    • P(l);S_CUTB(f)::S(C)
  • Tries
    • Try
      • Q(H);CHECK,XP(l)
      • Refutation
        • S(k);CHECK,P_PINS(C),XQ(H)
  • Actual
    • P(D);
    • Threat
      • QAB(H)
    • Vars
      • S(k);CHECK,P_PINS(C),XP(D)::S(F),XS(k)
      • S(e);P_PINR(E),SBLOCK::S(C)
      • S(e);P_PINR(E),S_CUTB(f)::S(C)
      • S(k);OGATE,P_PINS(C)::R1(G)
      • S(k);P_PINS(C),S_CUTB(f)::R1(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).