MESON Chess Problem Database

Problem Display
PID: 158938 (1b6/1b3N2/8/1n2r2R/1B1kp1Q1/pB3P2/KP1pPP2/3N1n2 w - - 0 1)

Ferreter, Raul

Ajedrez Artistico, 1968

1b6/1b3N2/8/1n2r2R/1B1kp1Q1/pB3P2/KP1pPP2/3N1n2

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Bxc5#
    • 1...Rd5
      • 2.Qxe4#
    • 1...Re6
      • 2.Bc5#
    • 1...Re7
      • 2.Bc5#
    • 1...Re8
      • 2.Bc5#
    • 1...Se3
      • 2.fxe3#
    • 1...Sc3+
      • 2.bxc3#
  • Tries
    • 1.Qxe4+?
      • 1...Rxe4
        • 2.Bc5#
      • 1...Bxe4!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qc4#
      • 1...Sc3+
        • 2.bxc3#
      • 1...Rxe6
        • 2.Bc5#
      • 1...Rc5
        • 2.Bxc5#
      • 1...Rd5
        • 2.Qxe4#
      • 1...Bd5
        • 2.Qb6#
      • 1...Se3
        • 2.fxe3#
      • 1...Sd6
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(g);N_GUARD::B(H),XR(g)
    • R(g);N_GUARD,S_CUTB(h)::QAR1(I),XP(e)
    • R(g);N_GUARD::B(H)
    • S(a);OGATE::P(E),XS(a)
    • S(f);CHECK,OGATE::P(C),XS(f)
  • Tries
    • Try
      • Q(I);CHECK,XP(e)
      • Vars
        • R(g);XQ(I)::B(H)
      • Refutation
        • B(h);XQ(I)
  • Actual
    • Q(I);N_PINP(e)
    • Threat
      • QAR1(I)
    • Vars
      • S(f);CHECK,OGATE::P(C),XS(f)
      • R(g);N_GUARD,XQ(I)::B(H)
      • R(g);N_GUARD::B(H),XR(g)
      • R(g);OGATE::QAR1(I),XP(e)
      • B(h);P_PINB(F),S_CUTR(g)::QAB(I)
      • S(a);OGATE::P(E),XS(a)
      • S(f);S_CUTB(i)::QAB1(I),XR(g)
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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).