MESON Chess Problem Database

Problem Display
PID: 189701 (8/2p1K1Q1/7R/1pNk2p1/1Pp5/2r1pb2/6R1/4n1rB w - - 0 1)

Leopold, Dr Rudolf L

4th Prize, Budapesti Sakkor, 1912

8/2p1K1Q1/7R/1pNk2p1/1Pp5/2r1pb2/6R1/4n1rB

#2

7 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Rxg5#
    • 1...Rxh1
      • 2.Rxg5#
    • 1...Bd1
      • 2.Rd2#
      • 2.Rxg5#
    • 1...Be2
      • 2.Rxg5#
    • 1...Bg4
      • 2.Rd2#
    • 1...Bh5
      • 2.Rd2#
      • 2.Rxg5#
    • 1...c6
      • 2.Rd6#
  • Tries
    • 1.Rg4?
      • threat
        • 2.Rd4#
        • 2.Qd4#
        • 2.Qxg5#
      • 1...Rd3
        • 2.Qxg5#
      • 1...Be4
        • 2.Bxe4#
      • 1...Sc2
        • 2.Bxf3#
        • 2.Qxg5#
      • 1...Sd3
        • 2.Bxf3#
        • 2.Rd4#
        • 2.Qd4#
      • 1...Rxg4!
  • Keys
    • 1.Kf6!
      • threat
        • 2.Qd7#
      • 1...Kd4
        • 2.Ke6#
      • 1...Kc6
        • 2.Ke5#
      • 1...Kd6
        • 2.Qd7#
      • 1...Bg4
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::R(B),XP(i)
    • R(b);N_GUARD,XB(A)::R(B),XP(i)
    • B(e);::B(A)+R(B),DCHECK,XP(i)
    • B(e);::B(A)+R(B),DCHECK
    • P(j);N_GUARD::R1(E)
  • Tries
    • Try
      • R(B);P_PINB(e)
      • Threat
        • DUALS(3)
      • Vars
        • R(c);::QAR(G),XP(i)
        • B(e);OGATE::B(A),XB(e)
      • Refutation
        • R(b);XR(B)
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • QAR2(G)
    • Vars
      • K(h);P-FLIGHT::QAB(G)+K(F)
      • K(h);S_FLIGHT::R(E)+K(F)
      • K(h);P-FLIGHT::QAR1(G)
      • B(e);::B(A)+R(B),DCHECK
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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).