MESON Chess Problem Database

Problem Display
PID: 261601 (8/5pK1/4p3/3pk1p1/1Q6/3P2P1/4r2B/3R4 w - - 0 1)

Graf, Philipp W

Neue Zurcher Zeitung, 1894

8/5pK1/4p3/3pk1p1/1Q6/3P2P1/4r2B/3R4

#2

6 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.g4#
    • 1...Re1
      • 2.g4#
    • 1...d4
      • 2.Qc5#
    • 1...g4
      • 2.Qf4#
  • Keys
    • 1.Re1!
      • threat
        • 2.g4#
      • 1...Kf5
        • 2.g4#
      • 1...d4
        • 2.Qc5#
      • 1...g4
        • 2.Qf4#
      • 1...f5
        • 2.Rxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT,S_CUTR(a)::P(D)
    • R(a);N_GUARD::B(B)+P(D)
    • P(b);OGATEB::QAR2(E)
    • P(d);N_GUARD::QAB1(E)
  • Actual
    • R(A);P_PINR(a)
    • Threat
      • B(B)+P(D)
    • Vars
      • K(c);N_SPINR(a),P-FLIGHT::P(D)
      • P(b);OGATEB::QAR2(E)
      • P(d);N_GUARD::QAB1(E)
      • P(f);SBLOCK::R(A),XR(a)
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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).