MESON Chess Problem Database

Problem Display
PID: 16067 (4qB1n/1p1RPP2/2P3P1/1K1bNR2/1nPk1pB1/1prPpPr1/2p2N2/2Q5 w - - 0 1)

Otten, Bert

Probleemblad, 2000

4qB1n/1p1RPP2/2P3P1/1K1bNR2/1nPk1pB1/1prPpPr1/2p2N2/2Q5

#2

15 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.Sxf3#
    • 1...Sa2
      • 2.Rxd5#
    • 1...Sxd3
      • 2.Rxd5#
    • 1...Sa6
      • 2.Rxd5#
    • 1...Sxc6
      • 2.Rxd5#
    • 1...exf2
      • 2.Qxf4#
    • 1...e2
      • 2.Qxf4#
  • Keys
    • 1.Bg7!
      • threat
        • 2.Rxf4#
      • 1...bxc6+
        • 2.Sxc6#
      • 1...Qxd7
        • 2.Sxd7#
      • 1...Qxf7
        • 2.Sxf7#
      • 1...Rxd3
        • 2.Sexd3#
      • 1...Rxc4
        • 2.Sxc4#
      • 1...Rxf3
        • 2.Sxf3#
      • 1...Rxg4
        • 2.Sexg4#
      • 1...Sxd3
        • 2.Sexd3#
        • 2.Rxd5#
      • 1...Sxg6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • R(e);XP(D)::S(H),XR(e)
    • S(f);N_GUARD::R1(L),XB(i)
    • S(f);N_GUARD,XP(C)::R1(L),XB(i)
    • S(f);N_GUARD,XP(J)::R1(L),XB(i)
    • P(d);OGATE,XS(B)::QAR2(A),XP(h)
    • P(d);OGATE::QAR2(A),XP(h)
  • Actual
    • B(O);
    • Threat
      • R(I),XP(h)
    • Vars
      • P(j);CHECK,XP(J)::B(O)+S(H),DCHECK,XP(j)
      • Q(k);N_SPINB(i),P_PINP(J),XR(L)::B(O)+S(H),XQ(k)
      • Q(k);XP(N)::B(O)+S(H),XQ(k)
      • R(c);XP(C)::B(O)+S(H),XR(c)
      • R(c);XP(E)::B(O)+S(H),XR(c)
      • R(e);XP(D)::B(O)+S(H),DCHECK,XR(e)
      • R(e);XB(F)::B(O)+S(H),XR(e)
      • S(l);XP(K)::B(O)+S(H),XS(l)
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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).