MESON Chess Problem Database

Problem Display
PID: 106200 (8/4K1B1/B1pPPR2/R1Nk1p2/3Pn3/4r1n1/N1Pb1Q1q/8 w - - 0 1)

Pituk, Alexander

Praca, 1954

8/4K1B1/B1pPPR2/R1Nk1p2/3Pn3/4r1n1/N1Pb1Q1q/8

#2

12 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Sb3#
    • 1...Re1
      • 2.c4#
    • 1...Re2
      • 2.c4#
    • 1...Ra3
      • 2.c4#
    • 1...Rb3
      • 2.c4#
    • 1...Rc3
      • 2.Sb4#
    • 1...Rd3
      • 2.c4#
    • 1...Rf3
      • 2.c4#
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qe5#
      • 1...Kxd4
        • 2.Rxf5#
      • 1...Sxc5
        • 2.Rxc5#
        • 2.c4#
      • 1...Sxd6
        • 2.Qxd6#
      • 1...Sxf6
        • 2.c4#
      • 1...Sf1
        • 2.Rxf5#
      • 1...Sh1
        • 2.Rxf5#
      • 1...Se2
        • 2.Rxf5#
      • 1...Sh5
        • 2.Rxf5#
      • 1...Sf2
        • 2.c4#
      • 1...Sc3
        • 2.Sb4#
      • 1...Sg5
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 7
  • Sets
    • K(f);P-FLIGHT,P_SPINR(c),XP(D)::S(F)
    • R(c);::P(B)
    • R(c);S_CUTB(a)::S(A)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(f);P-FLIGHT,P_SPINS(e),XP(D)::B(L)+R(J),XP(g)
      • S(e);OGATE,P_PINP(I),XP(H)::QAR1(C),XS(e)
      • S(e);P_PINP(I),XR(J)::P(B)
      • S(d);N_GUARD::R(J),XP(g)
      • S(e);P_PINP(I)::P(B)
      • S(e);P_PINP(I),S_CUTB(a)::S(A)
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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).