MESON Chess Problem Database

Problem Display
PID: 194031 (3KQ3/1pN4B/7q/4PPp1/1B2k3/2P1NpP1/2PP1b2/8 w - - 0 1)

Corrias, Antonio G

Guidelli, Giorgio

Il Cintraco, 1917

3KQ3/1pN4B/7q/4PPp1/1B2k3/2P1NpP1/2PP1b2/8

#2

12 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qf8
      • 2.f6#
    • 1...Qa6
      • 2.f6#
    • 1...Qb6
      • 2.f6#
    • 1...Qc6
      • 2.f6#
    • 1...Qd6+
      • 2.exd6#
    • 1...Qf6+
      • 2.exf6#
    • 1...Bxe3
      • 2.d3#
  • Tries
    • 1.f6+?
      • 1...Qg6
        • 2.Bxg6#
      • 1...Qxh7!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qa4#
      • 1...Qxd6+
        • 2.exd6#
      • 1...Qf6+
        • 2.exf6#
      • 1...Bxe3
        • 2.d3#
      • 1...Qf8
        • 2.f6#
      • 1...Qe6
        • 2.fxe6#
      • 1...b5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(e);N_GUARD,P_PINQ(L)::B(J)+P(H)
    • Q(e);N_GUARD::B(J)+P(H)
    • Q(e);N_GUARD,P_PINS(I)::B(J)+P(H)
    • Q(e);CHECK,OGATE::QAR(L)+P(G),XQ(e)
    • B(a);SBLOCK,XS(D)::P(B)
  • Tries
    • Try
      • P(H);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::B(J),XQ(e)
      • Refutation
        • Q(e);XB(J)
  • Actual
    • B(F);
    • Threat
      • QAR(L)
    • Vars
      • Q(e);CHECK,OGATE,XB(F)::QAR(L)+P(G),XQ(e)
      • Q(e);CHECK,OGATE::QAR(L)+P(G),XQ(e)
      • B(a);SBLOCK,XS(D)::P(B)
      • Q(e);N_GUARD,P_PINQ(L)::B(J)+P(H)
      • Q(e);OGATE::B(J)+P(H),XQ(e)
      • P(f);N_GUARD::QAB(L)
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).