MESON Chess Problem Database

Problem Display
PID: 262820 (1B1Q2K1/6n1/6p1/2pP4/2B1kn1N/6b1/qp1R1P2/7b w - - 0 1)

Tura, Waldemar

4th HM., Szachy, 1958

1B1Q2K1/6n1/6p1/2pP4/2B1kn1N/6b1/qp1R1P2/7b

#2

8 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd5
      • 2.Qxd5#
  • Tries
    • 1.Qg5?
      • threat
        • 2.Qe5#
      • 1...Bxh4
        • 2.Qxf4#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Sd3
        • 2.Qe3#
      • 1...Se2
        • 2.Qe3#
      • 1...Sg2
        • 2.f3#
      • 1...Sh3
        • 2.Qe3#
      • 1...Sfh5
        • 2.Qe3#
      • 1...Sfe6
        • 2.Qe3#
      • 1...Sf5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qe5#
      • 1...Bxh4
        • 2.Qxf4#
      • 1...Sxd5
        • 2.Bd3#
      • 1...Se2
        • 2.Rxe2#
      • 1...Sg2
        • 2.Qf3#
      • 1...Sd3
        • 2.Re2#
      • 1...Sh3
        • 2.Re2#
      • 1...Sfh5
        • 2.Re2#
      • 1...Sfe6
        • 2.Re2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(f);OGATE,XP(E)::QAB1(G),XS(f)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • B(d);N_GUARD,XS(D)::QAR1(G),XS(f)
        • S(f);OGATE,XP(E)::QAB1(G),XS(f)
        • S(f);OGATE::QAR1(G)
        • S(f);S_CUTB(a)::P(B)
      • Refutation
        • S(i);
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • B(d);N_GUARD,XS(D)::QAR1(G),XS(f)
      • S(f);N_GUARD,SBLOCK,XP(E)::B(C)
      • S(f);N_GUARD::R(A),XS(f)
      • S(f);OGATE::QAB1(G)
      • S(f);N_GUARD::R(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).