MESON Chess Problem Database

Problem Display
PID: 262838 (3nnQ1B/r2pN2K/4kbP1/1P3p2/3Pp3/7B/8/3R4 w - - 0 1)

Zalewski, Mieczyzlaw

Szachy, 1976

3nnQ1B/r2pN2K/4kbP1/1P3p2/3Pp3/7B/8/3R4

#2

9 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Qxf6#
    • 1...Sc7
      • 2.Qxf6#
    • 1...d6
      • 2.Bxf5#
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Se3#
      • 1...d5+
        • 2.Sg7#
      • 1...d6+
        • 2.Se7#
      • 1...Kd5
        • 2.Se3#
      • 1...Be7
        • 2.d5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sg7
        • 2.Qd6#
      • 1...e3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(h);N_GUARD,SBLOCK::QAR1(H),XB(d)
    • S(h);N_GUARD::QAR1(H),XB(d)
    • P(f);P_PINS(F),SBLOCK::B(B),XP(b)
  • Actual
    • S(F);XP(b)
    • Threat
      • B(B)+S(F)
    • Vars
      • P(f);CHECK,SBLOCK::B(B)+S(F),DCHECK
      • P(f);CHECK,SBLOCK::B(B)+S(F)
      • K(c);S_FLIGHT::S(F)
      • B(d);::P(C)
      • S(h);N_GUARD::QAR1(H),XS(h)
      • S(h);N_GUARD::QAR1(H)
      • P(a);::B(B)+S(F),XP(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).