MESON Chess Problem Database

Problem Display
PID: 184995 (4R1K1/1b5n/1bQp1P2/3NPp2/R1nrk1p1/2B1N1P1/q3PP2/8 w - - 0 1)

Barron, Philip

Bulletin Ouvrier des Echecs, 1951

4R1K1/1b5n/1bQp1P2/3NPp2/R1nrk1p1/2B1N1P1/q3PP2/8

#2

12 + 10

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.exd6#
    • 1...Rd2
      • 2.exd6#
    • 1...Rd3
      • 2.exd6#
    • 1...Rxd5
      • 2.exd6#
    • 1...Sb2
      • 2.exd6#
    • 1...Sd2
      • 2.exd6#
    • 1...Sa3
      • 2.exd6#
    • 1...Sxe3
      • 2.exd6#
    • 1...Sa5
      • 2.exd6#
    • 1...Sxf6+
      • 2.Sxf6#
  • Keys
    • 1.Bb2!
      • threat
        • 2.Sc3#
      • 1...Sxf6+
        • 2.Sxf6#
      • 1...Rxd5
        • 2.exd6#
      • 1...Sxb2
        • 2.exd6#
      • 1...Sxe3
        • 2.exd6#
      • 1...Sxe5
        • 2.Qc2#
      • 1...Rd1
        • 2.exd6#
      • 1...Rd2
        • 2.exd6#
      • 1...Rd3
        • 2.exd6#
      • 1...Sd2
        • 2.Qc2#
        • 2.exd6#
      • 1...Sa3
        • 2.exd6#
      • 1...Sa5
        • 2.Qc2#
        • 2.exd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(c);P_SPINS(b)::R(K)+P(H),XP(h)
    • R(c);P_SPINR(c),P_SPINS(b),XS(G)::R(K)+P(H),XP(h)
    • S(b);N_GUARD,P_PINS(G),P_SPINR(c)::R(K)+P(H),XP(h)
    • S(b);N_GUARD,P_PINS(G),P_SPINR(c),XS(D)::R(K)+P(H),XP(h)
    • S(j);CHECK,XP(J)::QAB(I)+S(G),DCHECK,XS(j)
  • Actual
    • B(C);
    • Threat
      • QAB(I)+S(G),DCHECK
    • Vars
      • S(j);CHECK,XP(J)::QAB(I)+S(G),DCHECK,XS(j)
      • R(c);P_SPINR(c),P_SPINS(b),XS(G)::R(K)+P(H),XP(h)
      • S(b);N_GUARD,P_PINS(G),P_SPINR(c),XB(C)::R(K)+P(H),XP(h)
      • S(b);N_GUARD,P_PINS(G),P_SPINR(c),XS(D)::R(K)+P(H),XP(h)
      • S(b);OGATE,P_PINS(G),P_SPINR(c),P_SPINS(b),XP(H)::QAB(I)
      • R(c);P_SPINS(b)::R(K)+P(H),XP(h)
      • S(b);N_GUARD,P_PINS(G),P_SPINR(c)::R(K)+P(H),XP(h)
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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).