MESON Chess Problem Database

Problem Display
PID: 174354 (8/pQ6/1bppn3/p5p1/2Pk1nN1/R4K2/B1R5/2N5 w - - 0 1)

Yamanishi, Jorge T

Comm., Source?, 0000

8/pQ6/1bppn3/p5p1/2Pk1nN1/R4K2/B1R5/2N5

#2

8 + 9

1077 Boletim da UBP 1987

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Qb2#
    • 1...Sd3
      • 2.Sb3#
    • 1...Sc5
      • 2.Qg7#
    • 1...c5
      • 2.Qe4#
  • Tries
    • 1.Rd3+?
      • 1...Sxd3
        • 2.Sb3#
      • 1...Kc5!
    • 1.Qxb6+?
      • 1...Sc5
        • 2.Qb2#
      • 1...c5
        • 2.Qb2#
      • 1...axb6!
    • 1.c5?
      • threat
        • 2.Ra4#
      • 1...Bxc5
        • 2.Qb2#
      • 1...Sxc5
        • 2.Qg7#
      • 1...Sd3
        • 2.Se2#
        • 2.Rxd3#
      • 1...Sd5
        • 2.Se2#
        • 2.Rc4#
        • 2.Rd3#
      • 1...a4
        • 2.Rxa4#
      • 1...dxc5!
  • Keys
    • 1.Ra4!
      • threat
        • 2.c5#
      • 1...Kc5
        • 2.Sb3#
      • 1...Bc5
        • 2.Qb2#
      • 1...Sd3
        • 2.Sb3#
      • 1...Sd5
        • 2.cxd5#
      • 1...Sc5
        • 2.Qg7#
      • 1...c5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);OGATE,SBLOCK::QAB(H)
    • S(b);SBLOCK::S(A)
    • S(h);N_GUARD,SBLOCK::QAB(H)
    • P(f);OGATE,SBLOCK::QAR1(H)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • S(b);SBLOCK,XR(D)::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(H);CHECK,XB(e)
      • Vars
        • S(h);P_SPINS(h),SBLOCK::QAB(H)
        • P(f);P_SPINP(f),SBLOCK::QAB(H)
      • Refutation
        • P(i);XQ(H)
    • Try
      • P(F);
      • Threat
        • R(D)
      • Vars
        • B(e);OGATE,XP(F)::QAB(H)
        • S(h);N_GUARD,XP(F)::QAB(H)
        • P(c);::R(D),XP(c)
      • Refutation
        • P(g);XP(F)
  • Actual
    • R(D);
    • Threat
      • R(D)+P(F)
    • Vars
      • K(a);S_FLIGHT::S(A)
      • B(e);OGATE,SBLOCK::QAB(H)
      • S(b);SBLOCK::S(A)
      • S(b);OGATE::R(D)+P(F),XS(b)
      • S(h);N_GUARD,SBLOCK::QAB(H)
      • P(f);OGATE,SBLOCK::QAR1(H)
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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).