MESON Chess Problem Database

Problem Display
PID: 191359 (1Q6/r1n1p3/1np4R/2k2p2/1p3N1R/1p2P3/b2N1Br1/3K1B2 w - - 0 1)

Coello Alonso, Jose Antonio

BCPS Website, 2019

1Q6/r1n1p3/1np4R/2k2p2/1p3N1R/1p2P3/b2N1Br1/3K1B2

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.e4#
    • 1...Rg4
      • 2.e4#
    • 1...Rg5
      • 2.e4#
    • 1...Rg7
      • 2.e4#
    • 1...Rg8
      • 2.e4#
    • 1...Bb1
      • 2.Sxb3#
    • 1...Sbd5
      • 2.Sd3#
    • 1...Scd5
      • 2.Se6#
    • 1...e5
      • 2.Qf8#
    • 1...e6
      • 2.Qf8#
  • Tries
    • 1.Sd3+?
      • 1...Kd5
        • 2.Bxg2#
        • 2.Rd4#
      • 1...Kb5!
  • Keys
    • 1.R4h5!
      • threat
        • 2.Se4#
      • 1...Rg5
        • 2.e4#
      • 1...Bb1
        • 2.Sxb3#
      • 1...Sbd5
        • 2.Sd3#
      • 1...Scd5
        • 2.Se6#
      • 1...e5
        • 2.Qf8#

This is a version of 191358

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD,P_PINB(B)::B(D)+P(E)
    • R(b);N_GUARD::B(D)+P(E)
    • B(a);N_GUARD::S(C),XP(c)
    • S(g);SBLOCK::S(F)
    • S(j);N_GUARD,SBLOCK::S(F)
    • P(k);OGATEB::QAB(I)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINS(g)
  • Actual
    • R(G);P_PINP(f)
    • Threat
      • S(C)
    • Vars
      • R(b);N_GUARD,N_SPINP(f)::B(D)+P(E)
      • B(a);N_GUARD::S(C),XP(c)
      • S(g);N_SPINP(f),SBLOCK::S(F)
      • S(j);N_GUARD,N_SPINP(f),SBLOCK::S(F)
      • P(k);N_SPINP(f),OGATEB::QAB(I)
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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).