MESON Chess Problem Database

Problem Display
PID: 109017 (r3N3/1R1R4/N5B1/2p1P2Q/P1kP4/1p2nr2/1P5n/6BK w - - 0 1)

Morra, Juan Carlos

To Mat, 1963

r3N3/1R1R4/N5B1/2p1P2Q/P1kP4/1p2nr2/1P5n/6BK

#2

12 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qe2#
    • 1...Rg3
      • 2.Qe2#
    • 1...Rh3
      • 2.Qe2#
    • 1...Rf4
      • 2.Qe2#
    • 1...Rf5
      • 2.Qe2#
    • 1...Rf6
      • 2.Qe2#
    • 1...Rf7
      • 2.Qe2#
    • 1...Rf8
      • 2.Qe2#
    • 1...Sd5
      • 2.Sd6#
    • 1...cxd4
      • 2.Rb4#
      • 2.Rbc7#
  • Tries
    • 1.Qxf3?
      • threat
        • 2.Qe2#
      • 1...cxd4
        • 2.Sd6#
        • 2.Rb4#
        • 2.Rbc7#
        • 2.Rdc7#
        • 2.Qc6#
      • 1...Sxf3!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Bd3#
      • 1...cxb4
        • 2.Rbc7#
      • 1...cxd4
        • 2.Rdc7#
      • 1...Rf5
        • 2.Qe2#
      • 1...Sd1
        • 2.Sd6#
      • 1...Sef1
        • 2.Sd6#
      • 1...Sc2
        • 2.Sd6#
      • 1...Sg2
        • 2.Sd6#
      • 1...Seg4
        • 2.Sd6#
      • 1...Sd5
        • 2.Sd6#
      • 1...Sf5
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 7
  • Sets
    • R(d);OGATE,P_PINB(A)::QAB(G)
    • R(d);OGATE::QAB(G)
    • S(c);SBLOCK::S(L)
  • Tries
    • Try
      • Q(G);XR(d)
      • Threat
        • QAB(G)
      • Refutation
        • S(a);XQ(G)
  • Actual
    • S(H);
    • Threat
      • B(I)
    • Vars
      • P(f);OGATEB,SBLOCK,XS(H)::R(J)
      • P(f);OGATEB,SBLOCK,XP(E)::R(K)
      • R(d);OGATE::QAB(G)
      • S(c);::S(L)
      • S(c);N_GUARD,S_CUTR(d)::B(I)
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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).