MESON Chess Problem Database

Problem Display
PID: 208164 (2R1R3/1pbN4/3k4/1p2N3/p3p3/3p4/6BK/3Q4 w - - 0 1)

Meyer, Heinrich Friedrich Ludwig

New York Clipper, 1875

2R1R3/1pbN4/3k4/1p2N3/p3p3/3p4/6BK/3Q4

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxd3#
    • 1...d2
      • 2.Qxd2#
    • 1...e3
      • 2.Qxd3#
  • Tries
    • 1.Bxe4?
      • threat
        • 2.Qxd3#
      • 1...d2
        • 2.Qxd2#
      • 1...Bb6!
    • 1.Qc1?
      • threat
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...b6
        • 2.Qc6#
      • 1...Bb6!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Sb4#
        • 2.S3e5#
      • 1...Kd5+
        • 2.S3e5#
      • 1...Kc6+
        • 2.S3e5#
      • 1...Kxd7+
        • 2.Se5#
      • 1...exd3
        • 2.Qxd3#
      • 1...Ba5
        • 2.Sb4#
      • 1...Bb6
        • 2.S3c5#
      • 1...b4
        • 2.Sxb4#
        • 2.S3e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • K(e);P-FLIGHT,P_PINS(D)::QAR2(A),XP(a)
    • P(a);OGATEB::QAR(A),XP(a)
    • P(c);N_GUARD::QAR(A),XP(a)
  • Tries
    • Try
      • B(B);XP(c)
      • Threat
        • QAR(A),XP(a)
      • Vars
        • P(a);OGATEB::QAR(A),XP(a)
      • Refutation
        • B(g);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAB1(A)
      • Vars
        • K(e);P-FLIGHT,P_PINS(D),P_SPINP(c)::QAR1(A)
        • P(f);N_GUARD::QAR1(A)
      • Refutation
        • B(g);
  • Actual
    • S(D);XP(a)
    • Threat
      • DUALS(2)
    • Vars
      • K(e);CHECK,P-FLIGHT,P_SPINP(c)::QAR(A)+S(D)
      • K(e);CHECK,P-FLIGHT,P_SPINB(g),P_SPINP(c)::S(D)
      • K(e);CHECK,P-FLIGHT,XS(E)::QAR(A)+S(D),DCHECK
      • P(c);OGATE,P_SPINP(c),XS(D)::QAR(A),XP(c)
      • B(g);::QAR(A)+S(D)
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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).