MESON Chess Problem Database

Problem Display
PID: 152360 (6B1/3R4/KP1bqN2/1P1p4/N1k1pn1R/1pB5/4P3/1Q6 w - - 0 1)

Armeni, Alberto

L'Italia Scacchistica, 1985

6B1/3R4/KP1bqN2/1P1p4/N1k1pn1R/1pB5/4P3/1Q6

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Qxe4#
    • 1...Qg4
      • 2.Qxe4#
    • 1...Qxd7
      • 2.Qxe4#
    • 1...Sg2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
      • 2.exd3#
    • 1...Sh3
      • 2.Qd3#
    • 1...Sh5
      • 2.Qd3#
    • 1...Sg6
      • 2.Qd3#
    • 1...b2
      • 2.Qa2#
    • 1...e3
      • 2.Qd3#
  • Tries
    • 1.Sxe4?
      • threat
        • 2.Sb2#
        • 2.Sd2#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...dxe4
        • 2.Qxe4#
      • 1...b2
        • 2.Sd2#
        • 2.Qa2#
      • 1...Ba3
        • 2.Sd2#
      • 1...Sd3
        • 2.Sd2#
        • 2.Sxd6#
        • 2.Qxd3#
        • 2.exd3#
      • 1...d4!
    • 1.Rxf4?
      • threat
        • 2.Qd3#
      • 1...b2
        • 2.Qa2#
      • 1...Qh3
        • 2.Bxd5#
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...d4
        • 2.Bxe6#
      • 1...Bxf4!
    • 1.Rc7+?
      • 1...Bc5
        • 2.Rxc5#
      • 1...Bxc7!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Se3#
      • 1...Kxd5
        • 2.Qxb3#
      • 1...Qxd5
        • 2.Qxe4#
      • 1...Sxd5
        • 2.Qd3#
      • 1...b2
        • 2.Qa2#
      • 1...Bc5
        • 2.Sb2#
      • 1...Sg2
        • 2.Qd3#
      • 1...e3
        • 2.Sxe3#
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(g);N_GUARD,P_SPINP(e)::QAR2(A),XP(c)
    • Q(g);N_GUARD,P_SPINP(e),XR(J)::QAR2(A),XP(c)
    • S(d);N_GUARD,P_SPINP(c)::QAB1(A)
    • P(a);OGATEB::QAB(A)
    • P(c);N_GUARD,P_SPINS(d)::QAB1(A)
  • Tries
    • Try
      • S(I);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);OGATE,P_SPINP(e),XS(I)::QAR2(A),XQ(g)
        • P(e);OGATE,P_SPINQ(g),XS(I)::QAR2(A),XP(e)
        • B(f);P_PINP(H)::S(I)
      • Refutation
        • P(e);P_SPINQ(g)
    • Try
      • R(E);P_PINP(c),XS(d)
      • Threat
        • QAB1(A)
      • Vars
        • P(a);OGATEB::QAB(A)
        • P(e);N_SPINP(c),OGATEB,P_SPINQ(g)::B(K),XQ(g)
      • Refutation
        • B(f);N_SPINP(c),P_PINP(H),XR(E)
    • Try
      • R(J);CHECK
      • Vars
        • B(f);N_GUARD,P_PINP(H),P_SPINB(f)::R1(J),XB(f)
      • Refutation
        • B(f);P_PINP(H),XR(J)
  • Actual
    • S(I);XP(e)
    • Threat
      • S(I)
    • Vars
      • K(b);P_SPINB(f),P_SPINQ(g),S_FLIGHT,XS(I)::QAB(A),XP(a)
      • Q(g);N_GUARD,P_SPINQ(g),XS(I)::QAR2(A),XP(c)
      • S(d);N_GUARD,P_SPINP(c),XS(I)::QAB1(A)
      • P(a);OGATEB::QAB(A)
      • B(f);P_PINP(H),SBLOCK::S(D)
      • S(d);N_GUARD,P_SPINP(c)::QAB1(A)
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).