MESON Chess Problem Database

Problem Display
PID: 224657 (1BN1n1B1/2r5/2b3p1/1p2k3/pK3pPP/2p2p2/3P4/Q7 w - - 0 1)

Hartlaub, Carl

Sudwestdeutsche Schachzeitung, 1887

1BN1n1B1/2r5/2b3p1/1p2k3/pK3pPP/2p2p2/3P4/Q7

#2

8 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qxc3#
    • 1...Be4
      • 2.Qxc3#
  • Tries
    • 1.d3?
      • threat
        • 2.Qxc3#
      • 1...Kf6
        • 2.Qxc3#
      • 1...Kd4!
  • Keys
    • 1.Kxc3!
      • threat
        • 2.Kd3#
      • 1...Be4+
        • 2.Kb4#
      • 1...Ke4
        • 2.Qe1#
      • 1...Kf6
        • 2.Kc2#
        • 2.Kd3#
        • 2.Kb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(f);N_SPINR(i),S_FLIGHT::QAB(A),XP(a)
    • B(g);SBLOCK::QAB(A),XP(a)
  • Tries
    • Try
      • P(B);
      • Threat
        • QAB(A),XP(a)
      • Vars
        • K(f);N_SPINR(i),S_FLIGHT::QAB(A),XP(a)
      • Refutation
        • K(f);N_SPINR(i),S_FLIGHT
  • Actual
    • K(C);S_FLIGHT,XP(a)
    • Threat
      • QAB(A)+K(C)
    • Vars
      • B(g);CHECK,SBLOCK::QAB(A)+K(C)
      • K(f);N_SPINR(i),P-FLIGHT::QAR(A)
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).