MESON Chess Problem Database

Problem Display
PID: 97302 (2K5/p7/2RNB3/8/k5qR/BpP4n/1P6/Q1r2b2 w - - 0 1)

Stocchi, Ottavio

Le Probleme TT, 1949

2K5/p7/2RNB3/8/k5qR/BpP4n/1P6/Q1r2b2

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Bb4#
    • 1...Rc2
      • 2.Bb4#
      • 2.Bc5#
    • 1...Rxc3
      • 2.Bc5#
    • 1...Bg2
      • 2.Ra6#
    • 1...Ba6+
      • 2.Rxa6#
  • Tries
    • 1.Rxg4+?
      • 1...Ka5
        • 2.Bb4#
      • 1...Bc4
        • 2.Ra6#
      • 1...Sf4!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Ra6#
      • 1...Ba6+
        • 2.Rxa6#
      • 1...Ka5
        • 2.Bb4#
      • 1...Rxc3
        • 2.Bc5#
      • 1...Qc4
        • 2.Rc5#
      • 1...a5
        • 2.Rc4#
      • 1...a6
        • 2.Rxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(e);N_SPINQ(f),P-FLIGHT::QAR(A)+B(C),DCHECK
    • R(a);N_GUARD,P_PINR(F),XP(D)::QAR(A)+B(C)
    • B(b);N_GUARD::R(F)
    • B(b);CHECK,N_GUARD::R(F),XB(b)
  • Tries
    • Try
      • R(E);CHECK,N_SPINB(H),XQ(f)
      • Vars
        • K(e);P-FLIGHT::QAR(A)+B(C),DCHECK
        • B(b);P_SPINB(b)::R(F)
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • B(H);
    • Threat
      • B(H)+R(F),DCHECK
    • Vars
      • B(b);CHECK::B(H)+R(F),DCHECK,XB(b)
      • K(e);N_SPINQ(f),P-FLIGHT::QAR(A)+B(C),DCHECK
      • R(a);N_GUARD,P_PINR(F),XP(D)::QAR(A)+B(C)
      • Q(f);N_PINB(H),P_PINR(F),S_CUTB(b)::B(H)+R(F)
      • P(g);SBLOCK::B(H)+R(F),DCHECK
      • P(g);::B(H)+R(F),DCHECK,XP(g)
HTML5 logo

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).