MESON Chess Problem Database

Problem Display
PID: 198694 (6q1/bQ6/N2BR3/3K2p1/2R3p1/5k2/b1pP1p2/n4B2 w - - 0 1)

Corrias, Antonio G

3rd HM., L'Illustrazione Italiana, 1921

6q1/bQ6/N2BR3/3K2p1/2R3p1/5k2/b1pP1p2/n4B2

#2

8 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6+
      • 2.Kxe6#
    • 1...Qf7
      • 2.Qxf7#
    • 1...Qa8
      • 2.Rf6#
    • 1...Qb8
      • 2.Rf6#
      • 2.Qf7#
    • 1...Qc8
      • 2.Qf7#
    • 1...Qe8
      • 2.Rf6#
    • 1...Bxc4+
      • 2.Kxc4#
    • 1...Bd4
      • 2.Kxd4#
    • 1...Bc5
      • 2.Kxc5#
    • 1...Bb8
      • 2.Kd4#
      • 2.Kc5#
    • 1...g3
      • 2.Ke5#
  • Keys
    • 1.Sc5!
      • threat
        • 2.Kd4#
      • 1...Qxe6+
        • 2.Kxe6#
      • 1...Bxc4+
        • 2.Kxc4#
      • 1...Bxc5
        • 2.Kxc5#
      • 1...Qf7
        • 2.Qxf7#
      • 1...Qh7
        • 2.Re3#
      • 1...Qg6
        • 2.Re3#
      • 1...Qg7
        • 2.Re3#
      • 1...Qa8
        • 2.Re3#
        • 2.Rf6#
      • 1...Qb8
        • 2.Re3#
        • 2.Rf6#
        • 2.Qf7#
      • 1...Qc8
        • 2.Re3#
        • 2.Qf7#
      • 1...Qe8
        • 2.Rf6#
      • 1...Qh8
        • 2.Re3#
      • 1...Sb3
        • 2.Rc3#
      • 1...g3
        • 2.Ke5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(i);CHECK,XR(G)::QAB(H)+K(D),XQ(i)
    • Q(i);N_GUARD::QAR(H),XQ(i)
    • Q(i);OGATE,P_PINQ(H)::R(G)
    • Q(i);N_GUARD::QAR(H)
    • Q(i);OGATE::R(G)
    • B(b);CHECK,P_PINR(G),XR(C)::QAB(H)+K(D),XB(b)
    • B(h);::QAB(H)+K(D),XB(h)
    • P(f);SBLOCK::QAB(H)+K(D)
  • Actual
    • S(E);
    • Threat
      • QAB(H)+K(D)
    • Vars
      • Q(i);CHECK,XR(G)::QAB(H)+K(D),XQ(i)
      • B(b);CHECK,P_PINR(G),XR(C)::QAB(H)+K(D),XB(b)
      • B(h);XS(E)::QAB(H)+K(D),XB(h)
      • Q(i);N_GUARD::QAR(H),XQ(i)
      • Q(i);OGATE::R1(G)
      • Q(i);OGATE::R(G)
      • S(a);N_PINR(C),P_PINR(G)::R(C)
      • P(f);SBLOCK::QAB(H)+K(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).