MESON Chess Problem Database

Problem Display
PID: 231037 (2B5/4K1B1/2p1R3/3k4/N4p2/2p2q2/2P2P2/7Q w - - 0 1)

von Wardener, Friedrich Freiherr

Deutsche Schachzeitung, 1899

2B5/4K1B1/2p1R3/3k4/N4p2/2p2q2/2P2P2/7Q

#2

8 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...c5
      • 2.Sb6#
  • Tries
    • 1.Ba6?
      • threat
        • 2.Qxf3#
      • 1...Qg2
        • 2.Qd1#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qxh1!
    • 1.Rd6+?
      • 1...Ke4
        • 2.Sxc3#
        • 2.Sc5#
        • 2.Rd4#
        • 2.Qh7#
      • 1...Kc4!
    • 1.Qh5+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Qxh5!
  • Keys
    • 1.Re4!
      • threat
        • 2.Rd4#
      • 1...Qxe4+
        • 2.Be6#
      • 1...Kxe4
        • 2.Sxc3#
      • 1...c5
        • 2.Bb7#
      • 1...Qe2
        • 2.Be6#
      • 1...Qe3
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(b);OGATE,P_PINR(E)::QAB1(A),XQ(b)
    • P(e);SBLOCK::S(D)
  • Tries
    • Try
      • B(H);
      • Threat
        • QAB(A),XQ(b)
      • Vars
        • Q(b);N_GUARD::QAR(A)
        • Q(b);OGATE,P_PINR(E)::QAB1(A),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(A)
    • Try
      • R(E);CHECK
      • Refutation
        • K(d);N_SPINQ(b),S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINQ(b)
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • Q(b);XQ(A)
  • Actual
    • R(E);N_PINQ(b)
    • Threat
      • R1(E)
    • Vars
      • Q(b);CHECK,P_SPINQ(b),XR(E)::B(H)
      • K(d);P_SPINQ(b),S_FLIGHT,XR(E)::S(D),XP(a)
      • P(e);OGATEB::B(H)
      • Q(b);P_PINR(E)::B(H)
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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).