MESON Chess Problem Database

Problem Display
PID: 136126 (1Q1N4/8/k4r2/P7/1K2b3/8/8/8 w - - 0 1)

Daubler, Heinz

Der neue Tag (Weiden)/Amberger Zeitung, 1999

1Q1N4/8/k4r2/P7/1K2b3/8/8/8

#2

4 + 3

14503 Problemschach-Jahrbuch (1999) 2000
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qb6#
    • 1...Rf2
      • 2.Qb6#
    • 1...Rf3
      • 2.Qb6#
    • 1...Rf4
      • 2.Qb6#
    • 1...Rf5
      • 2.Qb6#
    • 1...Rb6+
      • 2.Qxb6#
    • 1...Rc6
      • 2.Qb7#
      • 2.Qa8#
    • 1...Rf7
      • 2.Qb6#
    • 1...Rf8
      • 2.Qb6#
    • 1...Bb1
      • 2.Qb7#
      • 2.Qa8#
    • 1...Bc2
      • 2.Qb7#
      • 2.Qa8#
    • 1...Bd3
      • 2.Qb7#
      • 2.Qa8#
    • 1...Bf5
      • 2.Qb7#
      • 2.Qa8#
    • 1...Bc6
      • 2.Qb6#
    • 1...Bg6
      • 2.Qb7#
      • 2.Qa8#
    • 1...Bb7
      • 2.Qxb7#
    • 1...Bh7
      • 2.Qb7#
      • 2.Qa8#
    • 1...Ba8
      • 2.Qxa8#
  • Tries
    • 1.Se6?
      • threat
        • 2.Sc5#
        • 2.Sc7#
        • 2.Qb6#
      • 1...Rf5
        • 2.Sc7#
        • 2.Qb6#
      • 1...Rf7
        • 2.Sc5#
        • 2.Qb6#
      • 1...Bb7
        • 2.Sc5#
        • 2.Sc7#
      • 1...Rxe6!
    • 1.Qc8+?
      • 1...Bb7
        • 2.Qxb7#
      • 1...Ka7!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qa7#
        • 2.Qb5#
        • 2.Qb6#
        • 2.Qa8#
        • 2.Qc8#
      • 1...Rxc6
        • 2.Qa8#
      • 1...Bxc6
        • 2.Qb6#
      • 1...Rf5
        • 2.Qa7#
        • 2.Qb6#
        • 2.Qa8#
        • 2.Qc8#
      • 1...Rf7
        • 2.Qb5#
        • 2.Qb6#
      • 1...Rf8
        • 2.Qa7#
        • 2.Qb5#
        • 2.Qb6#
      • 1...Bd3
        • 2.Qa7#
        • 2.Qb6#
        • 2.Qa8#
        • 2.Qc8#
      • 1...Bf5
        • 2.Qa7#
        • 2.Qb5#
        • 2.Qb6#
        • 2.Qa8#

Anticipated by 231057(1997)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • R(c);N_GUARD::QAR1(C)
    • R(c);CHECK,N_GUARD::QAR1(C),XR(c)
    • B(a);S_CUTR(c)::QAR1(C)
    • B(a);N_GUARD::QAB1(C),XB(a)
    • B(a);N_GUARD::QAR2(C),XB(a)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Refutation
        • R(c);XS(D)
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(C),XB(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(D);
    • Threat
      • DUALS(5)
    • Vars
      • R(c);XS(D)::QAR2(C)
      • B(a);XS(D)::QAR1(C)
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).