MESON Chess Problem Database

Problem Display
PID: 229268 (4K1b1/2p5/3pk3/Rn4P1/2nP4/rP6/B5N1/2bR1Q2 w - - 0 1)

Elbogen, Arpad

Nepszava, 1926

4K1b1/2p5/3pk3/Rn4P1/2nP4/rP6/B5N1/2bR1Q2

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7+
      • 2.Qxf7#
    • 1...Bh7
      • 2.Qf7#
    • 1...Se5
      • 2.d5#
    • 1...Sc3
      • 2.Qf5#
      • 2.Qf6#
    • 1...Sxd4
      • 2.Qf6#
    • 1...Sa7
      • 2.Qf5#
      • 2.Qf6#
    • 1...d5
      • 2.Qf6#
  • Keys
    • 1.Bb1!
      • threat
        • 2.Qf5#
      • 1...Bf7+
        • 2.Qxf7#
      • 1...Kd5
        • 2.Qxc4#
      • 1...Sxd4
        • 2.Qf6#
      • 1...Bf4
        • 2.Sxf4#
      • 1...Bh7
        • 2.Qf7#
      • 1...Se3
        • 2.Sf4#
      • 1...Se5
        • 2.d5#
      • 1...d5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(h);CHECK,N_GUARD::QAB1(B),XB(h)
    • B(h);N_GUARD::QAB1(B)
    • S(c);SBLOCK::P(F)
    • S(d);XP(F)::QAR1(B)
    • P(e);SBLOCK::QAR1(B)
  • Actual
    • B(C);
    • Threat
      • QAB1(B)
    • Vars
      • B(h);CHECK,N_GUARD::QAB1(B),XB(h)
      • K(f);P_SPINS(d),S_FLIGHT::QAB1(B),XS(c)
      • S(d);XP(F)::QAR1(B)
      • B(a);N_GUARD::S(D),XB(a)
      • B(h);N_GUARD::QAB1(B)
      • S(c);S_CUTB(a)::S(D)
      • S(c);SBLOCK::P(F)
      • P(e);SBLOCK::QAR1(B)
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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).