MESON Chess Problem Database

Problem Display
PID: 261296 (bQK3B1/2P5/3P1Rp1/2b2N2/r1r1k2n/5p2/qp3P1B/3R1N2 w - - 0 1)

Liechtenhan, Walter

Neue Zurcher Zeitung, 1984

bQK3B1/2P5/3P1Rp1/2b2N2/r1r1k2n/5p2/qp3P1B/3R1N2

#2

11 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.Sxd6#
    • 1...Bd5
      • 2.Bxd5#
    • 1...Bb7+
      • 2.Qxb7#
    • 1...Sxf5
      • 2.Re6#
    • 1...gxf5
      • 2.Re6#
  • Tries
    • 1.Re1+?
      • 1...Be3
        • 2.Rxe3#
      • 1...Kd3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qe8#
      • 1...Bb7+
        • 2.Qxb7#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Sxf5
        • 2.Re6#
      • 1...Rc1
        • 2.Sd2#
        • 2.Qd3#
      • 1...Rc2
        • 2.Qd3#
      • 1...Rc3
        • 2.Sd2#
      • 1...Rcb4
        • 2.Sd2#
        • 2.Qd3#
      • 1...Rd4
        • 2.Re1#
      • 1...Bd4
        • 2.S5g3#
      • 1...Bd5
        • 2.Bxd5#
      • 1...Bc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(h);P_PINP(H),XP(F)::S(E),XB(h)
    • B(j);N_GUARD::B(K),XB(j)
    • B(j);CHECK,N_GUARD::QAB(I),XB(j)
    • S(g);SBLOCK,XS(E)::R(G)
    • P(i);SBLOCK,XS(E)::R(G)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • B(h);N_GUARD,P_PINP(H),P_SPINB(h)::R1(A),XB(h)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(I);
    • Threat
      • QAR(I)
    • Vars
      • B(j);CHECK,N_GUARD::QAB(I),XB(j)
      • B(h);P_PINP(H),XP(F)::S(E),XB(h)
      • S(g);SBLOCK,XS(E)::R(G)
      • R(e);OGATE::QAB1(I)
      • R(e);::S(B)
      • R(e);S_CUTB(h)::R(A)
      • B(h);P_PINP(H)::S(E)
      • B(j);N_GUARD::B(K),XB(j)
      • B(j);N_GUARD::QAB(I),XB(j)
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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).