MESON Chess Problem Database

Problem Display
PID: 159906 (B4Q1B/8/4R1np/1p1bb3/1r1pkp2/2p2N2/1pPR1PPK/3n3N w - - 0 1)

Anonymous

BCPJ (August), 1919

B4Q1B/8/4R1np/1p1bb3/1r1pkp2/2p2N2/1pPR1PPK/3n3N

#2

11 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.Rxd4#
    • 1...Bc6
      • 2.Bxc6#
    • 1...Bb7
      • 2.Bxb7#
    • 1...Sxf2
      • 2.Re2#
    • 1...Sh4
      • 2.Rxe5#
    • 1...Se7
      • 2.Rxe5#
    • 1...Sxf8
      • 2.Rxe5#
    • 1...Sxh8
      • 2.Rxe5#
    • 1...cxd2
      • 2.Sxd2#
    • 1...d3
      • 2.cxd3#
    • 1...h5
      • 2.Sg5#
  • Tries
    • 1.Qxf4+?
      • 1...Sxf4
        • 2.Sg3#
        • 2.Rxe5#
      • 1...Kxf4!
  • Keys
    • 1.Sh4!
      • threat
        • 2.Qf5#
      • 1...f3+
        • 2.Sg3#
      • 1...Bxa8
        • 2.Qxa8#
      • 1...Sxf2
        • 2.Re2#
      • 1...Sxh4
        • 2.Rxe5#
      • 1...Sxf8
        • 2.Rxe5#
      • 1...Bc6
        • 2.Bxc6#
      • 1...Bb7
        • 2.Bxb7#
      • 1...d3
        • 2.Qxb4#
      • 1...Se3
        • 2.f3#
      • 1...Se7
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::R1(C),XP(e)
    • B(i);N_SPINB(i),OGATEB,P_SPINB(j)::B(I),XB(i)
    • S(a);N_GUARD,XP(D)::R(C)
    • S(k);N_GUARD::R1(H),XB(j)
    • S(k);N_GUARD,XQ(J)::R1(H),XB(j)
    • S(k);N_GUARD,XB(K)::R1(H),XB(j)
    • P(c);XR(C)::S(G),XP(c)
    • P(e);OGATE::P(B),XP(e)
    • P(l);N_GUARD::S(G)
  • Tries
    • Try
      • Q(J);CHECK,P_SPINQ(J),XP(g)
      • Refutation
        • K(f);N_SPINB(i),P-FLIGHT,XQ(J)
  • Actual
    • S(G);
    • Threat
      • QAB1(J)
    • Vars
      • P(g);CHECK,N_GUARD::S(A)
      • B(i);N_SPINB(i),OGATE,P_SPINB(j),XB(I)::QAB(J),XB(i)
      • S(a);N_GUARD,XP(D)::R(C)
      • S(k);N_GUARD,XS(G)::R1(H),XB(j)
      • S(k);N_GUARD,XQ(J)::R1(H),XB(j)
      • B(i);N_SPINB(i),OGATEB,P_SPINB(j)::B(I),XB(i)
      • P(e);OGATEB::QAR(J),XR(d)
      • S(a);SBLOCK::P(D)
      • S(k);N_GUARD::R1(H),XB(j)
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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).