MESON Chess Problem Database

Problem Display
PID: 263856 (2N4b/3B1p1P/5k1p/2p4K/1p6/B1p2P2/2Q5/8 w - - 0 1)

Ferber, Eugene

Tijdschrift vd NSB, 1908

2N4b/3B1p1P/5k1p/2p4K/1p6/B1p2P2/2Q5/8

#2

7 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bg7
      • 2.Qf5#
    • 1...bxa3
      • 2.Qxc3#
    • 1...b3
      • 2.Qxc3#
  • Tries
    • 1.Qd3?
      • 1...Ke5
        • 2.Qd6#
      • 1...bxa3
        • 2.Qxc3#
      • 1...Bg7
        • 2.Qf5#
        • 2.Qd6#
      • 1...c2
        • 2.Bb2#
      • 1...b3
        • 2.Qxc3#
      • 1...c4
        • 2.Qd4#
      • 1...Kg7!
    • 1.Qg6+?
      • 1...Ke5
        • 2.Qd6#
      • 1...fxg6+!
  • Keys
    • 1.Qd2!
      • 1...Ke5
        • 2.Qd6#
      • 1...Kg7
        • 2.Qxh6#
      • 1...cxd2
        • 2.Bb2#
      • 1...bxa3
        • 2.Qxc3#
      • 1...Bg7
        • 2.Qf4#
        • 2.Qd6#
      • 1...c2
        • 2.Bb2#
      • 1...b3
        • 2.Qxc3#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(g);SBLOCK::QAR1(A)
    • P(b);N_GUARD,XB(B)::QAB(A),XP(a)
    • P(b);N_GUARD::QAB(A),XP(a)
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAB1(A)
        • P(b);N_GUARD,XB(B)::QAB(A),XP(a)
        • P(a);OGATEB::B(B)
        • P(b);N_GUARD::QAB(A),XP(a)
        • P(c);N_GUARD::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • P(f);CHECK,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(d);N_GUARD,S_FLIGHT::QAB1(A)
      • K(d);N_GUARD,S_FLIGHT::QAB1(A),XP(e)
      • P(a);OGATEB,XQ(A)::B(B)
      • P(b);N_GUARD,XB(B)::QAB(A),XP(a)
      • P(a);OGATEB::B(B)
      • P(b);N_GUARD::QAB(A),XP(a)
      • P(c);N_GUARD::QAB(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).