MESON Chess Problem Database

Problem Display
PID: 66808 (8/nK3B1n/4PB2/4pP2/N3k3/2Q5/4N3/8 w - - 0 1)

Kisis, Imants J

Mat, 1979

8/nK3B1n/4PB2/4pP2/N3k3/2Q5/4N3/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qd3#
    • 1...Kxf5
      • 2.Qf3#
  • Tries
    • 1.Sg3+?
      • 1...Kd5
        • 2.Qd3#
        • 2.Qc5#
      • 1...Kf4!
    • 1.Sc5+?
      • 1...Kxf5
        • 2.Qf3#
      • 1...Kd5!
    • 1.Bh5?
      • threat
        • 2.Qf3#
      • 1...Kd5
        • 2.Qd3#
      • 1...Kxf5
        • 2.Qxe5#
      • 1...Sg5!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Qd3#
      • 1...Kxf5
        • 2.Qf3#
      • 1...Kxe3!
    • 1.Qh3?
      • threat
        • 2.Sac3#
      • 1...Kd5
        • 2.Qd3#
      • 1...Sb5!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Qd3#
      • 1...Kd5
        • 2.Qxe5#
      • 1...Kxf5
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(B)
    • K(a);S_FLIGHT,XP(D)::QAR2(B)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(H);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
        • K(a);S_FLIGHT,XP(D)::QAR1(B),XP(b)
      • Refutation
        • S(d);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
        • K(a);S_FLIGHT,XP(D)::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Threat
        • S(C)
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • S(c);
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(a);S_FLIGHT::QAR1(B),XP(b)
      • K(a);S_FLIGHT,XP(D)::QAR2(B)
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).