MESON Chess Problem Database

Problem Display
PID: 115673 (1B1R4/5pK1/8/2Rq4/3NkP1P/4pN1P/b2p4/3n1Q1B w - - 0 1)

Draiska, Imants

Latvian Championship, 1959

1B1R4/5pK1/8/2Rq4/3NkP1P/4pN1P/b2p4/3n1Q1B

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb3
      • 2.Se1#
      • 2.Sg1#
      • 2.Sxd2#
      • 2.Sh2#
      • 2.Se5#
      • 2.Sg5#
    • 1...Qc4
      • 2.Se1#
      • 2.Sg1#
      • 2.Sxd2#
      • 2.Sh2#
      • 2.Se5#
      • 2.Sg5#
    • 1...Qc6
      • 2.Se1#
      • 2.Sg1#
      • 2.Sxd2#
      • 2.Sh2#
      • 2.Se5#
      • 2.Sg5#
    • 1...Qe6
      • 2.Se1#
      • 2.Sg1#
      • 2.Sxd2#
      • 2.Sh2#
      • 2.Se5#
      • 2.Sg5#
    • 1...Qb7
      • 2.Se1#
      • 2.Sg1#
      • 2.Sxd2#
      • 2.Sh2#
      • 2.Se5#
      • 2.Sg5#
    • 1...Qa8
      • 2.Se1#
      • 2.Sg1#
      • 2.Sxd2#
      • 2.Sh2#
      • 2.Se5#
      • 2.Sg5#
    • 1...Qxd4+
      • 2.Sxd4#
      • 2.Rxd4#
    • 1...Qxc5
      • 2.Se1#
      • 2.Sg1#
      • 2.Sxd2#
      • 2.Sh2#
      • 2.Se5#
      • 2.Sg5#
    • 1...Qe5+
      • 2.Sxe5#
    • 1...Qf5
      • 2.Se1#
      • 2.Sg1#
      • 2.Sxd2#
      • 2.Sh2#
      • 2.Se5#
      • 2.Sg5#
    • 1...Qg5+
      • 2.Sxg5#
    • 1...Qh5
      • 2.Sxd2#
      • 2.Sg5#
  • Tries
    • 1.Be5?
      • threat
        • 2.Se1#
        • 2.Sg1#
        • 2.Sxd2#
        • 2.Sh2#
        • 2.Sg5#
      • 1...Qxe5+
        • 2.Sxe5#
      • 1...Qxd4
        • 2.Sxd4#
      • 1...Sf2
        • 2.Sxd2#
        • 2.Sg5#
      • 1...e2!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sg3#
      • 1...Qd4+
        • 2.Rxd4#
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qg5+
        • 2.Sxg5#
      • 1...Kd3
        • 2.Se5#
      • 1...Kf5
        • 2.Sfd4#
      • 1...Qd6
        • 2.Se1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(f);CHECK::B(B)+S(C),XQ(f)
    • Q(f);CHECK::B(B)+S(C),DCHECK,XQ(f)
  • Tries
    • Try
      • B(J);
      • Threat
        • DUALS(5)
      • Vars
        • Q(f);CHECK,XB(J)::B(B)+S(C),XQ(f)
        • Q(f);P_PINB(J),XS(E)::B(B)+S(C),XQ(f)
      • Refutation
        • P(d);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • Q(f);CHECK,OGATE::R1(K),XQ(f)
      • Q(f);CHECK,OGATE::R1(H),XQ(f)
      • Q(f);CHECK::B(B)+S(C),DCHECK,XQ(f)
      • K(e);P_SPINQ(f),S_FLIGHT::S(C)
      • Q(f);::B(B)+S(C)
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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).