MESON Chess Problem Database

Problem Display
PID: 250056 (2nqB2b/5N2/3R4/r1k5/np1R4/1P2Pp2/Q7/K7 w - - 0 1)

Cristoffanini, Guido

Western Morning News, 1927

2nqB2b/5N2/3R4/r1k5/np1R4/1P2Pp2/Q7/K7

#2

8 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Rd5#
    • 1...Rb5
      • 2.Rc6#
    • 1...Bxd4+
      • 2.exd4#
    • 1...Sb2
      • 2.R4d5#
    • 1...Sc3
      • 2.Rc4#
    • 1...Sab6
      • 2.Qxa5#
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qxb4#
      • 1...Bxd4+
        • 2.exd4#
      • 1...bxa3
        • 2.b4#
      • 1...Qb6
        • 2.Rd5#
      • 1...Rb5
        • 2.Rc6#
      • 1...Sb2
        • 2.R4d5#
      • 1...Sc3
        • 2.Rc4#
      • 1...Sab6
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_GUARD,SBLOCK::R1(F)
    • R(d);SBLOCK::R1(F)
    • B(h);CHECK,OGATE,XR(E)::P(D),XB(h)
    • S(b);N_PINR(E),P_PINQ(B)::R1(E)
    • S(b);OGATE,P_PINQ(B)::QAR2(B),XR(d)
  • Actual
    • Q(B);P_PINP(c)
    • Threat
      • QAB1(B),XP(c)
    • Vars
      • B(h);CHECK,OGATE,XR(E)::P(D),XB(h)
      • P(c);N_SPINP(c),OGATE,XQ(B)::P(C)
      • Q(g);N_GUARD,SBLOCK::R1(F)
      • R(d);SBLOCK::R1(F)
      • S(b);N_PINR(E),P_PINQ(B)::R1(E)
      • S(b);OGATE,P_PINQ(B)::QAR2(B),XR(d)
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).