MESON Chess Problem Database

Problem Display
PID: 70891 (1B1b1N1q/3p1p2/2p4R/3kN1R1/p2Pn3/4Prrb/2B2nQ1/K7 w - - 0 1)

Peris Pardo, Julio

La Settimana Enigmistica, 1933

1B1b1N1q/3p1p2/2p4R/3kN1R1/p2Pn3/4Prrb/2B2nQ1/K7

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Rd6#
    • 1...Rf4
      • 2.Rd6#
    • 1...Rf5
      • 2.Rd6#
    • 1...Sd2
      • 2.Rd6#
    • 1...Sc3
      • 2.Rd6#
    • 1...Sc5
      • 2.Rd6#
    • 1...Sxg5
      • 2.Rd6#
    • 1...Sd6
      • 2.Rxd6#
    • 1...a3
      • 2.Bb3#
  • Tries
    • 1.Bxe4+?
      • 1...Sxe4
        • 2.Qa2#
      • 1...Kxe4!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Bc4#
      • 1...Qxe5
        • 2.Rxe5#
      • 1...Rxe3
        • 2.Rd6#
      • 1...Sxd3
        • 2.Qa2#
      • 1...Sxg5
        • 2.Rd6#
      • 1...Sd2
        • 2.Rd6#
      • 1...Sc3
        • 2.Rd6#
      • 1...Sc5
        • 2.Rd6#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Sf6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(b);P_SPINS(f),XP(D)::R1(H)
    • R(b);P_SPINS(f)::R1(H)
    • S(f);N_GUARD,P_SPINR(b)::R1(H)
    • S(f);N_GUARD,P_SPINR(b),XR(G)::R1(H)
    • S(f);N_GUARD,P_SPINR(b)::R1(H),XS(f)
    • P(e);N_GUARD::B(B)
  • Tries
    • Try
      • B(B);CHECK,XS(f)
      • Vars
        • S(a);OGATE,SBLOCK,XB(B)::QAB(C)
      • Refutation
        • K(g);P_SPINR(b),S_FLIGHT,XB(B)
  • Actual
    • B(B);
    • Threat
      • B(B)
    • Vars
      • Q(l);OGATE,P_PINP(E),P_SPINQ(l),XS(F)::R1(G),XQ(l)
      • R(b);P_SPINS(f),XP(D)::R1(H)
      • S(a);OGATE,XB(B)::QAB(C)
      • S(f);N_GUARD,P_SPINR(b),XR(G)::R1(H)
      • S(f);N_GUARD,P_SPINR(b)::R1(H)
      • S(f);N_GUARD,P_SPINR(b)::R1(H),XS(f)
      • S(f);N_GUARD,P_SPINR(b),S_CUTB(k),S_CUTP(j),S_CUTQ(l)::R(G)+S(F)
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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).