MESON Chess Problem Database

Problem Display
PID: 51335 (2BR4/7r/3Pp1bp/1P1k1n2/1PN2p1p/pP3P2/K2pNb1q/B6Q w - - 0 1)

Hjelle, David

Manchester Guardian, 1957

2BR4/7r/3Pp1bp/1P1k1n2/1PN2p1p/pP3P2/K2pNb1q/B6Q

#2

12 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sxf4#
    • 1...Qxh1
      • 2.Sxf4#
    • 1...Qg2
      • 2.Sxf4#
    • 1...Qh3
      • 2.Sxf4#
    • 1...Rb7
      • 2.Bxb7#
    • 1...Rh8
      • 2.Bb7#
    • 1...Be1
      • 2.Sb6#
    • 1...Bg3
      • 2.Sb6#
    • 1...Bb6
      • 2.Sxb6#
    • 1...Bf7
      • 2.Bb7#
    • 1...Se3
      • 2.Sb6#
    • 1...Sg3
      • 2.Sxf4#
    • 1...Sd4
      • 2.Sc3#
    • 1...Sxd6
      • 2.Rxd6#
    • 1...Se7
      • 2.dxe7#
    • 1...Sg7
      • 2.Bb7#
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qe4#
      • 1...Sxd6
        • 2.Rxd6#
      • 1...Se3
        • 2.Sb6#
      • 1...Sg3
        • 2.Sxf4#
      • 1...Sd4
        • 2.Sc3#
      • 1...Se7
        • 2.dxe7#
      • 1...Sg7
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 10
  • Sets
    • Q(c);N_GUARD::S(D),XP(e)
    • Q(c);N_GUARD,XQ(B)::S(D),XP(e)
    • R(l);N_GUARD::B(K),XR(l)
    • R(l);N_GUARD::B(K)
    • B(b);N_GUARD::S(H)
    • B(b);N_GUARD::S(H),XB(b)
    • B(j);S_CUTR(l)::B(K)
    • S(h);S_CUTB(b)::S(H)
    • S(h);S_CUTQ(c)::S(D),XP(e)
    • S(h);SBLOCK::S(D)
    • S(h);OGATE,P_SPINS(h),XP(J)::R1(L),XS(h)
    • S(h);OGATE::R(L)+P(J),XS(h)
    • S(h);S_CUTR(l)::B(K)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • S(h);OGATE,P_SPINS(h),XP(J)::R1(L),XS(h)
      • S(h);S_CUTB(b)::S(H)
      • S(h);S_CUTQ(c)::S(D),XP(e)
      • S(h);SBLOCK::S(D)
      • S(h);OGATE::R(L)+P(J),XS(h)
      • S(h);S_CUTR(l)::B(K)
HTML5 logo

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).