MESON Chess Problem Database

Problem Display
PID: 202261 (3R2bq/6b1/4p1B1/K1Q2r2/1N2k1n1/2B2rP1/3P4/8 w - - 0 1)

Olasz, Imre

Sydsvenska Dagbladet Snallposten, 1923

3R2bq/6b1/4p1B1/K1Q2r2/1N2k1n1/2B2rP1/3P4/8

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qc6#
    • 1...Se3
      • 2.d3#
    • 1...Se5
      • 2.Rd4#
      • 2.Qd4#
    • 1...Sf6
      • 2.Rd4#
      • 2.Qe5#
  • Tries
    • 1.Qe5+?
      • 1...Sxe5
        • 2.Rd4#
      • 1...Bxe5!
  • Keys
    • 1.Re8!
      • threat
        • 2.Qd5#
      • 1...Rxg3
        • 2.Qxf5#
      • 1...Rd3
        • 2.Qxf5#
      • 1...Be5
        • 2.Qc6#
      • 1...Se3
        • 2.d3#
      • 1...Se5
        • 2.Qd4#
      • 1...Sf6
        • 2.Qe5#
      • 1...e5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(f);N_PINQ(F)::QAB(F)
    • S(c);S_CUTR(a)::P(A)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • S(c);SBLOCK,XQ(F)::R1(H)
      • Refutation
        • B(f);XQ(F)
  • Actual
    • R(H);P_PINP(e)
    • Threat
      • QAB1(F)
    • Vars
      • R(a);N_GUARD,XP(C)::QAB1(F),XR(d)
      • R(a);N_GUARD::QAB1(F),XR(d)
      • B(f);N_PINQ(F),N_SPINP(e)::QAB(F)
      • S(c);S_CUTR(a)::P(A)
      • S(c);N_PINQ(F),N_SPINP(e)::QAR1(F)
      • S(c);N_GUARD,S_CUTB(f)::QAR1(F)
      • P(e);N_PINQ(F)::QAR1(F)
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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).