MESON Chess Problem Database

Problem Display
PID: 58597 (1K6/7b/7b/3N1n2/2p1Q1pr/ppP1p1P1/q1r1kP2/3R1R1n w - - 0 1)

Morra, Juan Carlos

Het Belgisch Schaakbord (L'Echiquier Belge), 1955

1K6/7b/7b/3N1n2/2p1Q1pr/ppP1p1P1/q1r1kP2/3R1R1n

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Rde1#
    • 1...Rxc3
      • 2.Sxc3#
    • 1...Rh2
      • 2.Qxg4#
    • 1...Rh3
      • 2.Qxg4#
    • 1...Rh5
      • 2.Qxg4#
    • 1...Bf4+
      • 2.Sxf4#
    • 1...Bg7
      • 2.Sf4#
    • 1...Bf8
      • 2.Sf4#
    • 1...Sxf2
      • 2.Rfe1#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Rfe1#
      • 1...Bf4+
        • 2.Sxf4#
      • 1...Rd2!
  • Keys
    • 1.f4!
      • threat
        • 2.Qxc4#
      • 1...Bxf4+
        • 2.Sxf4#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...Sfxg3
        • 2.Qxe3#
      • 1...gxf4 ep
        • 2.Qxf3#
      • 1...Rd2
        • 2.Rde1#
      • 1...Sf2
        • 2.Rfe1#
      • 1...Sd4
        • 2.Qxe3#
      • 1...Sd6
        • 2.Qxe3#
      • 1...Se7
        • 2.Qxe3#
      • 1...Sg7
        • 2.Qxe3#
      • 1...b2
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • R(c);SBLOCK::R1(A)
    • R(c);XP(D)::S(G),XR(c)
    • R(j);N_GUARD::QAB(F),XP(i)
    • B(l);CHECK,N_GUARD::S(G),XB(l)
    • B(l);N_GUARD::S(G)
    • S(a);SBLOCK,XP(C)::R1(B)
  • Tries
    • Try
      • Q(F);N_PINP(g)
      • Threat
        • R1(B)
      • Vars
        • B(l);CHECK,N_GUARD::S(G),XB(l)
      • Refutation
        • R(c);
  • Actual
    • P(C);
    • Threat
      • QAB(F),XP(h)
    • Vars
      • B(l);CHECK,XP(C)::S(G),XB(l)
      • R(c);XP(D)::S(G),XR(c)
      • S(k);N_GUARD,XP(E)::QAR1(F),XP(g)
      • P(i);EP,N_GUARD,XP(C)::QAB1(F),XP(i)
      • R(c);SBLOCK::R1(A)
      • S(a);SBLOCK::R1(B)
      • S(k);N_GUARD::QAR1(F),XP(g)
      • P(f);N_GUARD,S_CUTQ(b)::QAR2(F),XR(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).