MESON Chess Problem Database

Problem Display
PID: 193797 (5n2/8/b7/5p1q/1K2kP2/2P3Rn/Q3p3/2B5 w - - 0 1)

Leopold, Dr Rudolf L

Vasarnapi Ujsag, 1916

5n2/8/b7/5p1q/1K2kP2/2P3Rn/Q3p3/2B5

#2

6 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Qa8#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bb7
      • 2.Qc4#
    • 1...Bc8
      • 2.Qc4#
    • 1...Sxf4
      • 2.Re3#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sh7
      • 2.Qe6#
  • Tries
    • 1.Qb1+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Qc2+?
      • 1...Bd3
        • 2.Qxd3#
      • 1...Kd5!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qd5#
      • 1...Kxd3
        • 2.Qb1#
      • 1...Bxd3
        • 2.Qa8#
      • 1...Sxf4
        • 2.Re3#
      • 1...Qf7
        • 2.Qxe2#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bb7
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(f);OGATE::QAB(B)
    • B(f);N_GUARD::QAR2(B),XB(f)
    • B(f);N_GUARD::QAR2(B)
    • S(b);SBLOCK,XP(F)::R1(D)
    • S(g);N_GUARD::QAR2(B),XS(g)
    • S(g);N_GUARD::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(B),XB(f)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(B),XB(f)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(D)::QAB(B)
      • B(f);OGATE,SBLOCK,XR(D)::QAB(B)
      • S(b);SBLOCK,XP(F)::R1(D)
      • Q(e);N_GUARD::QAR2(B),XP(a)
      • B(f);N_GUARD::QAR2(B),XB(f)
      • B(f);N_GUARD::QAR2(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).