MESON Chess Problem Database

Problem Display
PID: 123025 (q3R3/8/b4b2/QB2nNp1/3Pk1p1/1n2N1K1/2Pr1P2/2BR4 w - - 0 1)

Lynn, David P

Slovensky Dennik, 1993

q3R3/8/b4b2/QB2nNp1/3Pk1p1/1n2N1K1/2Pr1P2/2BR4

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Bxc6#
    • 1...Qa7
      • 2.Bc6#
    • 1...Qb8
      • 2.Bc6#
    • 1...Rxc2
      • 2.Sd6#
    • 1...Re2
      • 2.Sd6#
    • 1...Rxf2
      • 2.Sd6#
    • 1...Rd3
      • 2.cxd3#
    • 1...Bd8
      • 2.Rxe5#
    • 1...Sxd4
      • 2.Sd6#
  • Tries
    • 1.Bd3+?
      • 1...Bxd3
        • 2.Qxa8#
      • 1...Rxd3!
  • Keys
    • 1.Bf1!
      • threat
        • 2.Bg2#
      • 1...Qxe8
        • 2.Qd5#
      • 1...Rxf2
        • 2.Sd6#
      • 1...Bxf1
        • 2.Qxa8#
      • 1...Sxd4
        • 2.Sd6#
      • 1...Be2
        • 2.Qxa8#
      • 1...Be7
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(i);N_GUARD::B(I),XQ(i)
    • Q(i);N_GUARD::B(I)
    • R(a);XP(C)::S(J)
    • R(a);::S(J)
    • R(a);XP(D)::S(J)
    • R(a);OGATE,P_PINS(E)::P(C),XR(a)
    • B(h);N_GUARD::R1(K),XS(e)
    • S(b);SBLOCK,XP(G)::S(J)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • B(g);OGATE,XB(I)::QAB(H),XQ(i)
      • Refutation
        • R(a);P_PINS(E),XB(I)
  • Actual
    • B(I);
    • Threat
      • B(I)
    • Vars
      • Q(i);N_GUARD,N_SPINS(e),XR(K)::QAB1(H)
      • R(a);XP(D)::S(J)
      • B(g);OGATE,XB(I)::QAB(H),XQ(i)
      • S(b);SBLOCK,XP(G)::S(J)
      • B(g);OGATE::QAB(H),XQ(i)
      • B(h);N_GUARD,N_SPINS(e)::QAR1(H),XS(e)
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).