MESON Chess Problem Database

Problem Display
PID: 120932 (5Q2/6N1/1B2R1b1/K3p3/p1P1k1p1/2p1p3/2ppq1P1/3r4 w - - 0 1)

Sobek, Karel

Sachova skladba, 1997

5Q2/6N1/1B2R1b1/K3p3/p1P1k1p1/2p1p3/2ppq1P1/3r4

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Qxf5#
    • 1...Bh5
      • 2.Qf5#
    • 1...Be8
      • 2.Qf5#
  • Tries
    • 1.Qf4+?
      • 1...Kd3
        • 2.Rd6#
      • 1...Kxf4!
    • 1.Qa8+?
      • 1...Kd3
        • 2.Qd5#
      • 1...Kf4!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qd4#
      • 1...Kd3
        • 2.Qd5#
      • 1...Kf4
        • 2.Qxe5#
      • 1...Qxc4
        • 2.Qxc4#
      • 1...Qxg2
        • 2.Qxe3#
      • 1...Qd3
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(k);N_GUARD::QAB1(G),XB(k)
    • B(k);N_GUARD::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(h);N_SPINP(j),S_FLIGHT::R(E)
      • Refutation
        • K(h);N_SPINP(j),P-FLIGHT,XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(h);N_SPINP(j),S_FLIGHT::QAR2(G)
      • Refutation
        • K(h);N_SPINP(j),P-FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • K(h);N_SPINP(j),S_FLIGHT::QAR2(G)
      • K(h);N_SPINP(j),P-FLIGHT::QAB1(G),XP(j)
      • Q(d);OGATE,XP(B)::QAR2(G),XQ(d)
      • Q(d);N_GUARD,XP(A)::QAR1(G),XP(f)
      • Q(d);SBLOCK::QAR1(G),XP(j)
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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).