MESON Chess Problem Database

Problem Display
PID: 284475 (3N4/3PB3/p2r1n2/2Rpk3/1Q2Pn2/KbP1N1R1/2Br1Pq1/8 w - - 0 1)

Bielefeldt, German

Cabrera, Virginio

Parcerisa MT (Problemas), 2026

3N4/3PB3/p2r1n2/2Rpk3/1Q2Pn2/KbP1N1R1/2Br1Pq1/8

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Rg5#
    • 1...Qh1
      • 2.Rg5#
    • 1...Qf3
      • 2.Rg5#
    • 1...Qxf2
      • 2.Rg5#
    • 1...Qh2
      • 2.Rg5#
    • 1...Rxc2
      • 2.Qd4#
    • 1...Re2
      • 2.Qd4#
    • 1...Rxf2
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
      • 2.cxd4#
    • 1...Re6
      • 2.Sf7#
    • 1...Ba4
      • 2.Sc4#
    • 1...Bc4
      • 2.Sxc4#
    • 1...Sg4
      • 2.Sxg4#
    • 1...Sh5
      • 2.Sg4#
    • 1...Sxd7
      • 2.Sg4#
    • 1...Sh7
      • 2.Sg4#
    • 1...Se8
      • 2.Sg4#
    • 1...Sg8
      • 2.Sg4#
  • Keys
    • 1.exd5!
      • threat
        • 2.Sf7#
      • 1...Qxd5
        • 2.Rg5#
      • 1...R2xd5
        • 2.Qd4#
      • 1...R6xd5
        • 2.Qb8#
      • 1...Bxd5
        • 2.Sc4#
      • 1...S4xd5
        • 2.f4#
      • 1...S6xd5
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 17
  • Sets
    • Q(b);N_GUARD::R(F)
    • Q(b);N_GUARD,XP(B)::R(F)
    • R(a);N_GUARD,XB(A)::QAB1(G)
    • R(a);N_GUARD::QAB1(G)
    • R(a);N_GUARD,XP(B)::QAB1(G)
    • R(h);SBLOCK::S(L)
    • B(c);N_GUARD::S(E)
    • B(c);N_GUARD::S(E),XB(c)
    • S(i);N_GUARD::S(E),XS(i)
    • S(i);N_GUARD::S(E)
    • S(i);N_GUARD,XP(J)::S(E)
  • Actual
    • P(H);XP(e)
    • Threat
      • S(L)
    • Vars
      • Q(b);N_GUARD,P_SPINQ(b),XP(H)::R(F)
      • R(a);N_GUARD,P_SPINR(a),XP(H)::QAB1(G)
      • R(h);OGATEB,P_SPINR(h),XP(H)::QAB(G)
      • B(c);N_GUARD,P_SPINB(c),XP(H)::S(E)
      • S(d);OGATE,P_SPINS(d),XP(H)::P(B)
      • S(i);N_GUARD,P_SPINS(i),XP(H)::S(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).