MESON Chess Problem Database

Problem Display
PID: 198904 (8/3K4/8/1Np5/1pBBkp1P/1P5P/4N3/3R4 w - - 0 1)

Bihari, Mor

Nepszava, 1921

8/3K4/8/1Np5/1pBBkp1P/1P5P/4N3/3R4

#2

9 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Bd3#
    • 1...f3
      • 2.Sd6#
  • Tries
    • 1.Sbc3+?
      • 1...Kf3
        • 2.Bd5#
      • 1...Kf5
        • 2.Bd3#
      • 1...bxc3!
    • 1.Bd3+?
      • 1...Kd5
        • 2.Sxf4#
        • 2.Sc7#
      • 1...Kf3!
    • 1.Rf1?
      • threat
        • 2.Sd6#
        • 2.Rxf4#
      • 1...Kf5
        • 2.Bd3#
      • 1...f3
        • 2.Sd6#
      • 1...cxd4!
    • 1.Rd2?
      • 1...Kf3
        • 2.Bd5#
      • 1...Kf5
        • 2.Bd3#
      • 1...f3
        • 2.Sd6#
      • 1...cxd4!
  • Keys
    • 1.Re1!
      • 1...Kf3
        • 2.Bd5#
      • 1...Kf5
        • 2.Bd3#
      • 1...cxd4
        • 2.Sexd4#
      • 1...f3
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(E)
    • P(c);SBLOCK::S(H)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(b);S_FLIGHT::B(E)
      • Refutation
        • P(a);XS(H)
    • Try
      • B(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::B(E)
        • P(c);::S(H)
      • Refutation
        • P(d);XB(F)
    • Try
      • R(A);
      • Vars
        • K(b);S_FLIGHT::B(E)
        • P(c);SBLOCK::S(H)
      • Refutation
        • P(d);XB(F)
  • Actual
    • R(A);
    • Vars
      • K(b);S_FLIGHT::B(E)
      • P(d);XB(F)::R(A)+S(B),XP(d)
      • P(c);SBLOCK::S(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).