MESON Chess Problem Database

Problem Display
PID: 129860 (4B3/4Q3/1N2n3/kP6/N7/1b2K3/1P6/8 w - - 0 1)

Drnek, Josef

Nove parizske mody, 1902

4B3/4Q3/1N2n3/kP6/N7/1b2K3/1P6/8

#2

7 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.b4#
    • 1...Ba2
      • 2.b4#
    • 1...Bc2
      • 2.b4#
    • 1...Bxa4
      • 2.Sc4#
    • 1...Bc4
      • 2.b4#
    • 1...Bd5
      • 2.b4#
  • Tries
    • 1.Sc4+?
      • 1...Kxa4
        • 2.Qa3#
        • 2.b6#
      • 1...Bxc4!
    • 1.Qc5?
      • threat
        • 2.Qc3#
      • 1...Bxa4
        • 2.Sc4#
        • 2.b4#
      • 1...Bc4
        • 2.b4#
      • 1...Sxc5!
    • 1.Qd6?
      • threat
        • 2.Qd2#
      • 1...Bxa4
        • 2.Sc4#
        • 2.b4#
      • 1...Bd5
        • 2.b4#
      • 1...Sd4!
  • Keys
    • 1.Kf2!
      • 1...Bxa4
        • 2.Sc4#
      • 1...Sc5
        • 2.Qe1#
      • 1...Bd1
        • 2.b4#
      • 1...Ba2
        • 2.b4#
      • 1...Bc2
        • 2.b4#
      • 1...Bc4
        • 2.b4#
      • 1...Bd5
        • 2.b4#
      • 1...Sd4
        • 2.Qe1#
      • 1...Sf4
        • 2.Qe1#
      • 1...Sg5
        • 2.Qe1#
      • 1...Sc7
        • 2.Qe1#
      • 1...Sg7
        • 2.Qe1#
      • 1...Sd8
        • 2.Qe1#
      • 1...Sf8
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE::P(A)
    • B(a);N_GUARD,SBLOCK,XS(C)::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • B(a);XS(E)
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • B(a);OGATE::P(A)
      • Refutation
        • S(c);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAB(F)
      • Vars
        • B(a);OGATE::P(A)
      • Refutation
        • S(c);
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • B(a);N_GUARD,SBLOCK,XS(C)::S(E)
      • S(c);OGATE::QAB(F)
      • B(a);OGATE::P(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).