MESON Chess Problem Database

Problem Display
PID: 200647 (1qb4Q/1nb5/r3pB2/r7/2P1k3/p1P1p2p/4B3/2K2R2 w - - 0 1)

Brogi, Giuseppe

Prete, Rodolfo

Stella Polaris, 1967

1qb4Q/1nb5/r3pB2/r7/2P1k3/p1P1p2p/4B3/2K2R2

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qh7#
    • 1...Re5
      • 2.Qh4#
    • 1...Rd6
      • 2.Qh4#
    • 1...Be5
      • 2.Qh7#
    • 1...Sc5
      • 2.Qh7#
    • 1...Sd6
      • 2.Qh4#
  • Tries
    • 1.Kc2?
      • threat
        • 2.Bd3#
      • 1...Rd6
        • 2.Qh4#
      • 1...Sc5
        • 2.Qh7#
      • 1...Rd5!
  • Keys
    • 1.Be5!
      • threat
        • 2.Rf4#
      • 1...Rxe5
        • 2.Qh4#
      • 1...Bxe5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD::QAB(G)
    • R(e);S_CUTB(i)::QAR(G)
    • R(f);S_CUTB(i)::QAR(G)
    • B(i);S_CUTR(e)::QAB(G)
    • S(h);S_CUTR(e)::QAB(G)
    • S(h);S_CUTB(i)::QAR(G)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • B(C)
      • Vars
        • R(f);S_CUTB(i)::QAR(G)
        • S(h);S_CUTR(e)::QAB(G)
      • Refutation
        • R(e);
  • Actual
    • B(F);
    • Threat
      • R1(B)
    • Vars
      • R(e);SBLOCK,XB(F)::QAR(G)
      • B(i);SBLOCK,XB(F)::QAB(G)
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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).