MESON Chess Problem Database

Problem Display
PID: 69828 (B7/p7/3kP1p1/3N2N1/1P1b2K1/3Q4/p7/8 w - - 0 1)

Aloni, Yoel

Navon, Emanuel

4th Comm., Portoroz Internet Ty., 2002

B7/p7/3kP1p1/3N2N1/1P1b2K1/3Q4/p7/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qg3#
    • 1...Bg1
      • 2.Qg3#
    • 1...Bc5
      • 2.Qg3#
    • 1...Be5
      • 2.Qa6#
    • 1...Bb6
      • 2.Qg3#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qc7#
      • 1...Ke5
        • 2.Qh2#
        • 2.Qc7#
      • 1...Bc5
        • 2.Qh2#
      • 1...Bb6
        • 2.Qh2#
      • 1...Bc3!
    • 1.Qe2?
      • threat
        • 2.Sf7#
      • 1...Be5
        • 2.Qa6#
      • 1...Be3!
    • 1.Qb5?
      • threat
        • 2.Qb8#
      • 1...Ke5
        • 2.Qb8#
      • 1...Bb6!
    • 1.Qxg6?
      • threat
        • 2.Sf7#
      • 1...Ke5
        • 2.Sf7#
      • 1...Bf6!
    • 1.Qc3?
      • threat
        • 2.Qc7#
      • 1...Ke5
        • 2.Qg3#
        • 2.Qc7#
      • 1...Bc5
        • 2.Qg3#
        • 2.bxc5#
      • 1...Bb6
        • 2.Qg3#
      • 1...Bxc3!
    • 1.Qe3?
      • threat
        • 2.Sf7#
      • 1...Be5
        • 2.Qc5#
      • 1...Bxe3!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qc7#
      • 1...Ke5
        • 2.Qc7#
      • 1...Bc5
        • 2.Qf4#
      • 1...Bb6
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(c);S_FLIGHT::QAB(A)
    • B(b);N_GUARD::QAB(A)
    • B(b);N_GUARD,SBLOCK::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • B(b);N_GUARD::QAB(A)
      • Refutation
        • B(b);
    • Try
      • Q(A);
      • Threat
        • S(E)
      • Vars
        • B(b);N_GUARD,SBLOCK::QAR(A)
      • Refutation
        • B(b);
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • K(c);S_FLIGHT::QAB(A)
      • Refutation
        • B(b);
    • Try
      • Q(A);XP(d)
      • Threat
        • S(E)
      • Vars
        • K(c);S_FLIGHT::S(E)
      • Refutation
        • B(b);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • B(b);N_GUARD::QAB(A)
      • Refutation
        • B(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(E)
      • Vars
        • B(b);OGATE,SBLOCK::QAB1(A)
      • Refutation
        • B(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);S_FLIGHT::QAB(A)
      • B(b);OGATE::QAB(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).