MESON Chess Problem Database

Problem Display
PID: 71335 (4nR1n/p4b2/r7/P1pp1kNP/5PN1/QB1pP2P/K7/8 w - - 0 1)

Miro, Francois

La Cle, 1971

4nR1n/p4b2/r7/P1pp1kNP/5PN1/QB1pP2P/K7/8

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Sh6#
    • 1...d2
      • 2.Bc2#
    • 1...d4
      • 2.Qxc5#
  • Tries
    • 1.Rxf7+?
      • 1...Rf6
        • 2.Sh6#
      • 1...Sf6
        • 2.Sh6#
      • 1...Sxf7!
  • Keys
    • 1.Bxd5!
      • threat
        • 2.Qxd3#
      • 1...Rxa5
        • 2.Be6#
      • 1...Re6
        • 2.Bxe6#
      • 1...Sd6
        • 2.Be6#
      • 1...Sf6
        • 2.Sh6#
      • 1...d2
        • 2.Qd3#
      • 1...c4
        • 2.Be4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(h);N_SPINB(g),SBLOCK,S_CUTR(e)::S(G)
    • P(a);OGATEB::B(C)
    • P(c);OGATEB,P_PINB(C)::QAR(B),XP(b)
  • Tries
    • Try
      • R(K);CHECK,XB(g)
      • Vars
        • R(e);P_SPINR(e)::S(G)
        • S(h);P_SPINS(h)::S(G)
      • Refutation
        • S(i);XR(K)
  • Actual
    • B(C);P_SPINB(C),XP(c)
    • Threat
      • QAB(B),XP(a)
    • Vars
      • R(e);N_GUARD,P_PINQ(B),XP(H)::B(C)
      • R(e);N_GUARD,N_PINB(C)::B(C),XR(e)
      • S(h);S_CUTR(e)::B(C)
      • S(h);N_SPINB(g),SBLOCK,S_CUTR(e)::S(G)
      • P(a);::QAB(B)
      • P(b);N_PINB(C)::B(C)
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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).