MESON Chess Problem Database

Problem Display
PID: 243409 (2B3K1/r2p4/p7/b1R1B3/2N1k2n/7p/1N2n2p/1b3Q2 w - - 0 1)

Bata, Lorinc

Parallele 50, 1951

2B3K1/r2p4/p7/b1R1B3/2N1k2n/7p/1N2n2p/1b3Q2

#2

7 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qf4#
    • 1...Sg1
      • 2.Qf4#
    • 1...Sc3
      • 2.Qf4#
    • 1...Sg3
      • 2.Qf4#
    • 1...Sd4
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sf3
      • 2.Qxb1#
    • 1...Sf5
      • 2.Qh1#
    • 1...d5
      • 2.Qxe2#
    • 1...d6
      • 2.Qxe2#
  • Tries
    • 1.Bb7+?
      • 1...d5
        • 2.Bxd5#
      • 1...Rxb7!
  • Keys
    • 1.Qxh3!
      • threat
        • 2.Sd6#
      • 1...Sg3
        • 2.Qg4#
      • 1...Ba2
        • 2.Qd3#
      • 1...Bc7
        • 2.Sd2#
      • 1...Sf3
        • 2.Qh7#
      • 1...Sf5
        • 2.Qg2#
      • 1...d5
        • 2.Qe3#
      • 1...d6
        • 2.Sxd6#
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(b);N_GUARD::QAR1(A)
    • S(b);N_GUARD::QAR1(A),XS(b)
    • S(f);SBLOCK::QAB(A),XB(a)
    • S(f);N_GUARD,SBLOCK::QAB(A)
    • P(j);::QAR2(A),XS(b)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • P(j);P_SPINP(j)::B(F),XP(j)
      • Refutation
        • R(i);XB(F)
  • Actual
    • Q(A);XP(d)
    • Threat
      • S(C)
    • Vars
      • S(b);N_GUARD::QAR2(A)
      • B(a);N_GUARD,P_PINS(C)::QAB1(A)
      • B(g);N_GUARD::S(C)
      • S(f);OGATE,SBLOCK::QAB(A)
      • S(f);N_GUARD,SBLOCK::QAB(A)
      • P(j);::QAR1(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).