MESON Chess Problem Database

Problem Display
PID: 87816 (1n2N1b1/1pr1pB2/2k5/Q1N5/8/3p4/3K4/8 w - - 0 1)

Stan, Mihail

Buletin Problemistic, 1970

1n2N1b1/1pr1pB2/2k5/Q1N5/8/3p4/3K4/8

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qxc7#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Qxc7#
        • 2.Qb5#
      • 1...b5
        • 2.Qxc7#
        • 2.Qxb5#
      • 1...Rc8
        • 2.Qb5#
      • 1...Rd7
        • 2.Qb5#
      • 1...Sa6
        • 2.Qb5#
      • 1...b6
        • 2.Qb5#
      • 1...Bxc4!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Se5#
      • 1...Kd7
        • 2.Qxc7#
      • 1...b5
        • 2.Qxc7#
      • 1...b6
        • 2.Qd5#
      • 1...Rd7
        • 2.Qc5#
      • 1...Sd7
        • 2.Sb4#
      • 1...e5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR1(B),XR(d)
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);::QAB1(B)
        • S(f);::QAB1(B)
        • P(c);::QAB1(B)
      • Refutation
        • B(g);XB(D)
  • Actual
    • S(C);XP(a)
    • Threat
      • S(C)
    • Vars
      • K(b);S_FLIGHT::QAR1(B),XR(d)
      • P(c);SBLOCK::QAR1(B),XR(d)
      • P(c);SBLOCK::QAB1(B)
      • R(d);P_PINS(C),SBLOCK::QAR1(B)
      • S(f);SBLOCK::S(C)
      • P(e);::S(C),XP(e)
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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).