MESON Chess Problem Database

Problem Display
PID: 264250 (B4Bb1/1N6/1p3K2/1PN5/3kp3/1P1P4/1P1Q4/1q1nn3 w - - 0 1)

Palkoska, Emil

Prace, 1953

B4Bb1/1N6/1p3K2/1PN5/3kp3/1P1P4/1P1Q4/1q1nn3

#2

10 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.dxe4#
    • 1...Sc2
      • 2.dxe4#
  • Tries
    • 1.Se6+?
      • 1...Kd5
        • 2.Sa5#
        • 2.Sbc5#
        • 2.Sd6#
        • 2.Sbd8#
        • 2.Qg5#
      • 1...Bxe6!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf5#
      • 1...Kxc5
        • 2.d4#
      • 1...Be6
        • 2.Sxe6#
      • 1...Bh7
        • 2.Se6#
      • 1...Se3
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(d);P-FLIGHT::QAR(B)+P(D)DCHECK,XP(e)
    • S(c);N_GUARD,S_CUTQ(a)::QAR(B)+P(D),XP(e)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • B(g);XS(F)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(d);OGATE,S_FLIGHT,XS(F)::P(D)
      • B(g);N_GUARD::S(F),XB(g)
      • B(g);N_GUARD::S(F)
      • S(b);N_GUARD,SBLOCK::QAB1(B)
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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).