MESON Chess Problem Database

Problem Display
PID: 189994 (2n5/2N3N1/1n3pp1/1Q1b2p1/2pPk1p1/p5P1/Pp2P3/4R1BK w - - 0 1)

Guidelli, Giorgio

L'Italia Scacchistica, 1913

2n5/2N3N1/1n3pp1/1Q1b2p1/2pPk1p1/p5P1/Pp2P3/4R1BK

#2

10 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qxd5#
    • 1...Sd7
      • 2.Qxd5#
    • 1...Sa8
      • 2.Qxd5#
    • 1...b1Q
      • 2.Qxb1#
    • 1...b1S
      • 2.Qxb1#
    • 1...b1B
      • 2.Qxb1#
    • 1...b1R
      • 2.Qxb1#
    • 1...c3
      • 2.Qd3#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Sc3#
        • 2.Sxf6#
      • 1...b1S
        • 2.Sxf6#
      • 1...Sa4
        • 2.Sxf6#
      • 1...Sd7
        • 2.Sc3#
      • 1...c3
        • 2.Sxc3#
        • 2.Sxf6#
      • 1...f5
        • 2.Sc3#
        • 2.Sf6#
      • 1...Sxd5!
    • 1.Sce8?
      • threat
        • 2.Sxf6#
      • 1...f5
        • 2.Sf6#
      • 1...Sd7!
    • 1.Qe8+?
      • 1...Be6
        • 2.Qxe6#
      • 1...Se7!
    • 1.Qxb2?
      • threat
        • 2.Qb1#
        • 2.Qc2#
      • 1...c3
        • 2.Qc2#
      • 1...axb2!
    • 1.Qb3?
      • threat
        • 2.Qc2#
        • 2.Qe3#
      • 1...b1Q
        • 2.Qxb1#
        • 2.Qe3#
      • 1...b1B
        • 2.Qxb1#
        • 2.Qe3#
      • 1...c3
        • 2.Qc2#
      • 1...cxb3!
  • Keys
    • 1.Sge8!
      • 1...Kf5+
        • 2.e4#
      • 1...b1Q
        • 2.Qxb1#
      • 1...b1S
        • 2.Qxb1#
      • 1...b1B
        • 2.Qxb1#
      • 1...b1R
        • 2.Qxb1#
      • 1...Bc6
        • 2.Sxf6#
      • 1...Be6
        • 2.Sxf6#
      • 1...Bb7
        • 2.Sxf6#
      • 1...Bf7
        • 2.Sxf6#
      • 1...Ba8
        • 2.Sxf6#
      • 1...Bg8
        • 2.Sxf6#
      • 1...Sa4
        • 2.Qxd5#
      • 1...Sd7
        • 2.Qxd5#
      • 1...Sa8
        • 2.Qxd5#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sa7
        • 2.Sd6#
      • 1...Se7
        • 2.Sd6#
      • 1...c3
        • 2.Qd3#
      • 1...f5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::QAB1(H),XB(f)
    • P(a);OGATE::QAB(H),XQ(a)
    • P(a);OGATE::QAB(H),XS(a)
    • P(a);OGATE::QAB(H),XB(a)
    • P(a);OGATE::QAB(H),XR(a)
    • P(c);OGATE::QAB1(H)
  • Tries
    • Try
      • S(I);XB(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::S(I),XP(i)
        • S(h);::S(I),XP(i)
        • S(h);::S(I)
      • Refutation
        • S(h);XS(I)
    • Try
      • S(I);
      • Threat
        • S(I),XP(i)
      • Vars
        • P(i);::S(I)
      • Refutation
        • S(h);
    • Try
      • Q(H);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR2(H),XB(f)
      • Refutation
        • S(k);P_SPINS(k)
    • Try
      • Q(H);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB(H)
      • Refutation
        • P(b);XQ(H)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB(H)
      • Refutation
        • P(c);XQ(H)
  • Actual
    • S(J);
    • Vars
      • K(d);CHECK,OGATE,P_SPINB(f),S_FLIGHT::P(E)
      • P(a);OGATE::QAB(H),XQ(a)
      • P(a);OGATE::QAB(H),XS(a)
      • P(a);OGATE::QAB(H),XB(a)
      • P(a);OGATE::QAB(H),XR(a)
      • B(f);::S(J),XP(i)
      • S(h);N_GUARD::QAB1(H),XB(f)
      • S(k);N_GUARD::S(J),XS(k)
      • S(k);N_GUARD::S(J)
      • P(c);OGATE::QAB1(H)
      • P(i);SBLOCK::S(J)
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).