MESON Chess Problem Database

Problem Display
PID: 206680 (8/8/3K1Q2/3P4/7p/2Npk1nR/1B6/1B6 w - - 0 1)

Ballo, Gyorgy

Nepszava, 1925

8/8/3K1Q2/3P4/7p/2Npk1nR/1B6/1B6

#2

7 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Ba3?
      • 1...d2
        • 2.Bc5#
      • 1...Kd2!
    • 1.Rxg3+?
      • 1...Kd2
        • 2.Qf2#
      • 1...hxg3!
  • Keys
    • 1.Qf1!
      • 1...Kd2
        • 2.Qc1#
      • 1...Kd4
        • 2.Qxd3#
      • 1...d2
        • 2.Sd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • P(a);SBLOCK::B(B)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT
    • Try
      • R(D);CHECK,XS(c)
      • Vars
        • K(b);S_FLIGHT::QAR2(G)
      • Refutation
        • P(d);XR(D)
  • Actual
    • Q(G);
    • Vars
      • K(b);N_SPINS(c),S_FLIGHT::QAB1(G)
      • K(b);N_SPINS(c),S_FLIGHT::QAR1(G),XP(a)
      • P(a);SBLOCK::S(C)
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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).