MESON Chess Problem Database

Problem Display
PID: 159708 (3r4/4b1p1/2B1N1K1/1p1n1p2/1p2RB1p/3k4/1P1P2b1/2Q1n3 w - - 0 1)

Anonymous

BCPJ (June), 1919

3r4/4b1p1/2B1N1K1/1p1n1p2/1p2RB1p/3k4/1P1P2b1/2Q1n3

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Bxb5#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Bg5
      • 2.Sc5#
    • 1...Bf6
      • 2.Sc5#
    • 1...Sf3
      • 2.Qb1#
    • 1...Se3
      • 2.Rxe3#
    • 1...Sxf4+
      • 2.Sxf4#
    • 1...Sb6
      • 2.Re3#
    • 1...Sf6
      • 2.Re3#
    • 1...Sc7
      • 2.Re3#
    • 1...fxe4
      • 2.Bxb5#
  • Keys
    • 1.Qd1!
      • threat
        • 2.Rd4#
      • 1...Sxf4+
        • 2.Sxf4#
      • 1...Kxe4
        • 2.Qe2#
      • 1...Bxe4
        • 2.Bxb5#
      • 1...fxe4
        • 2.Bxb5#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Bf6
        • 2.Sc5#
      • 1...Sc2
        • 2.Qe2#
      • 1...Sf3
        • 2.Qb1#
      • 1...Sc3
        • 2.dxc3#
      • 1...Se3
        • 2.dxe3#
      • 1...Sb6
        • 2.Qb3#
      • 1...Sf6
        • 2.Qb3#
      • 1...Sc7
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK,XR(D)::B(F),XP(f)
    • B(i);N_GUARD::S(G),XB(i)
    • B(i);N_GUARD::S(G)
    • S(a);N_GUARD::QAB(A)
    • S(g);N_GUARD::R1(D),XS(g)
    • S(g);CHECK,XB(E)::S(G),XS(g)
    • S(g);N_GUARD::R1(D)
    • P(h);SBLOCK,XR(D)::B(F),XP(f)
  • Actual
    • Q(A);
    • Threat
      • R1(D)
    • Vars
      • S(g);CHECK,XB(E)::S(G),XS(g)
      • K(c);P_SPINS(g),S_FLIGHT,XR(D)::QAR2(A)
      • B(b);SBLOCK,XR(D)::B(F),XP(f)
      • P(h);SBLOCK,XR(D)::B(F),XP(f)
      • B(i);N_GUARD::S(G),XB(i)
      • B(i);N_GUARD::S(G)
      • S(a);SBLOCK::QAB1(A)
      • S(a);N_GUARD::QAB(A)
      • S(g);OGATE::QAR(A)+P(C),XS(g)
      • S(g);N_GUARD::QAR2(A)
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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).