MESON Chess Problem Database

Problem Display
PID: 98215 (1Kb5/1NB1bR2/2p3r1/1Q2N3/2P1kpn1/2Ppp2R/5rP1/8 w - - 0 1)

Lincoln, Robert A

US Problem Bulletin, 1990

1Kb5/1NB1bR2/2p3r1/1Q2N3/2P1kpn1/2Ppp2R/5rP1/8

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.gxf3#
    • 1...Rg5
      • 2.Qxc6#
    • 1...Rg7
      • 2.Qxc6#
    • 1...Rg8
      • 2.Qxc6#
    • 1...Bh4
      • 2.Sc5#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Bg5
      • 2.Sc5#
    • 1...Bf6
      • 2.Sd6#
    • 1...Bd8
      • 2.Sc5#
    • 1...Sxe5
      • 2.Qxe5#
    • 1...d2
      • 2.Qb1#
  • Keys
    • 1.Sf3!
      • threat
        • 2.Rxf4#
      • 1...Rxf3
        • 2.gxf3#
      • 1...d2
        • 2.Qb1#
      • 1...e2
        • 2.Sd2#
      • 1...Rd6
        • 2.Sc5#
      • 1...Rf6
        • 2.Sg5#
      • 1...Bg5
        • 2.Sc5#
      • 1...Bd6
        • 2.Qxc6#
      • 1...Bf6
        • 2.Sd6#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sf6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • R(a);OGATE::P(A),XR(a)
    • R(h);N_GUARD::QAB(E),XP(g)
    • B(i);N_GUARD::S(G)
    • B(i);N_GUARD::S(G),XB(i)
    • B(i);N_GUARD,S_CUTR(h)::S(G)
    • S(f);OGATE,XS(F)::QAR1(E),XS(f)
    • P(b);OGATEB::QAB(E)
  • Actual
    • S(F);
    • Threat
      • R1(I),XP(e)
    • Vars
      • R(a);OGATE,XS(F)::P(A),XR(a)
      • P(b);OGATEB::QAB(E)
      • P(c);N_GUARD,S_CUTR(a)::S(F)
      • R(h);S_CUTB(i)::S(G)
      • R(h);N_GUARD,S_CUTB(i)::S(F)
      • B(i);N_GUARD::S(G)
      • B(i);P_PINB(H),S_CUTR(h)::QAB(E),XP(g)
      • B(i);N_GUARD,S_CUTR(h)::S(G)
      • B(j);N_GUARD::QAB1(E),XB(j)
      • S(f);N_GUARD::QAR1(E),XS(f)
      • S(f);N_GUARD::QAR1(E)
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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).