MESON Chess Problem Database

Problem Display
PID: 95050 (2N5/1b4Q1/3pp3/5P2/1K1Nk3/4P3/3R4/6B1 w - - 0 1)

Valuska, Jan

3rd Prize, Pravda (Bratislava), 1966

(First published on Sat Dec 3 1966)

2N5/1b4Q1/3pp3/5P2/1K1Nk3/4P3/3R4/6B1

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Sxd6#
    • 1...d5
      • 2.Sd6#
    • 1...e5
      • 2.Qg2#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qg4#
      • 1...Kf3
        • 2.Qg2#
      • 1...Kxf5
        • 2.Sxd6#
      • 1...exf5
        • 2.Qg2#
      • 1...Bxc6!
    • 1.Qh6?
      • threat
        • 2.Qxe6#
      • 1...Kd5
        • 2.Qxe6#
      • 1...Ke5
        • 2.Qxe6#
      • 1...exf5
        • 2.Qe6#
      • 1...Bd5
        • 2.Qf4#
      • 1...e5
        • 2.Qh1#
      • 1...Bxc8!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qg4#
      • 1...Kxf3
        • 2.Qg2#
      • 1...Kxf5
        • 2.Sxd6#
      • 1...exf5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(d);SBLOCK::S(H),XP(b)
    • P(b);SBLOCK::S(H)
    • P(c);SBLOCK::QAB(G)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR2(G)
      • Vars
        • K(a);S_FLIGHT::QAB1(G)
        • K(a);S_FLIGHT,XP(F)::S(H),XP(b)
        • P(c);SBLOCK,XP(F)::QAB(G)
      • Refutation
        • B(d);XS(E)
    • Try
      • Q(G);
      • Threat
        • QAR2(G),XP(c)
      • Vars
        • K(a);S_FLIGHT::QAB1(G),XP(c)
        • K(a);P-FLIGHT::QAR1(G),XP(c)
        • P(c);XP(F)::QAR2(G)
        • B(d);SBLOCK::QAR1(G)
        • P(c);SBLOCK::QAB(G)
      • Refutation
        • B(d);XS(H)
  • Actual
    • S(E);
    • Threat
      • QAR2(G)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(G)
      • K(a);S_FLIGHT,XP(F)::S(H),XP(b)
      • P(c);SBLOCK,XP(F)::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).