MESON Chess Problem Database

Problem Display
PID: 93877 (8/8/8/7R/4Pk1P/K4Bnr/3PpR1p/2n1NbQr w - - 0 1)

Salai (Snr), Ladislav

Sachove umeni (Ceskoslovensky sach), 1955

8/8/8/7R/4Pk1P/K4Bnr/3PpR1p/2n1NbQr

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Sxg2#
    • 1...Sa2
      • 2.Sd3#
    • 1...Sb3
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sxe4
      • 2.Qg4#
    • 1...Sf5
      • 2.Rxf5#
    • 1...Sxh5
      • 2.Qg5#
  • Tries
    • 1.Rxh2?
      • threat
        • 2.Qe3#
      • 1...Sxe4
        • 2.Qg4#
      • 1...Sxh5
        • 2.Qg5#
      • 1...Sf5
        • 2.Rxf5#
      • 1...Rxg1!
    • 1.Qxg3+?
      • 1...Rxg3
        • 2.Rf5#
      • 1...Kxg3!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Bxe2#
      • 1...Bxg2
        • 2.Sxg2#
      • 1...Sxe4
        • 2.Qg4#
      • 1...Sxh5
        • 2.Qg5#
      • 1...Sf5
        • 2.Rxf5#
      • 1...Sd3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD::S(A),XB(b)
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(f);OGATE,P_PINB(F),XP(G)::QAR1(B)
    • S(f);N_GUARD,P_PINB(F)::R1(I),XS(f)
    • S(f);OGATE,P_PINB(F),XR(I)::QAB1(B)
  • Tries
    • Try
      • R(D);XP(e)
      • Threat
        • QAB1(B)
      • Vars
        • S(f);OGATE,P_PINB(F),XP(G)::QAR1(B)
        • S(f);OGATE,P_PINB(F),XR(I)::QAB1(B)
        • S(f);N_GUARD,P_PINB(F)::R1(I),XS(f)
      • Refutation
        • R(c);XQ(B)
    • Try
      • Q(B);CHECK,XS(f)
      • Vars
        • R(g);P_PINB(F),SBLOCK,XQ(B)::R1(I)
      • Refutation
        • K(h);S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • R(D)+B(F),XP(d)
    • Vars
      • B(b);XQ(B)::S(A),XB(b)
      • S(f);OGATE,P_PINB(F),XP(G)::QAR1(B)
      • S(f);OGATE,P_PINB(F),XR(I)::QAB1(B)
      • S(f);N_GUARD,P_PINB(F)::R1(I),XS(f)
      • S(a);N_GUARD::S(A),XS(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).