MESON Chess Problem Database

Problem Display
PID: 271847 (4b3/4p3/R2p4/K2kq3/2pNN3/2B1R3/8/5Q1B w - - 0 1)

Gajevskis, A

Sachmatija, 2023

4b3/4p3/R2p4/K2kq3/2pNN3/2B1R3/8/5Q1B

#2

8 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Kb4?
      • threat
        • 2.Sf6#
        • 2.Qxc4#
      • 1...Qxd4
        • 2.Sf6#
      • 1...Qh2
        • 2.Sf6#
      • 1...Qg3
        • 2.Sxg3#
        • 2.Sf6#
      • 1...Qf4
        • 2.Sf6#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Qg7
        • 2.Sg3#
        • 2.Sg5#
        • 2.Sf6#
      • 1...Qh8
        • 2.Sf6#
      • 1...Qf5
        • 2.Sf6#
      • 1...Qg5
        • 2.Sg3#
        • 2.Sxg5#
        • 2.Sf6#
      • 1...Qh5
        • 2.Sf6#
      • 1...Qe6
        • 2.Sf6#
      • 1...Bb5
        • 2.Sf6#
      • 1...Qxe4!
    • 1.Sd2+?
      • 1...Kc5
        • 2.Qxc4#
      • 1...Qe4!
    • 1.Sxd6+?
      • 1...Kc5
        • 2.Sb7#
        • 2.Rxe5#
        • 2.Qxc4#
      • 1...Qe4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc7#
      • 1...Kxe6+
        • 2.Sc5#
      • 1...Qxc3+
        • 2.Sxc3#
      • 1...Qxe4
        • 2.Qf5#
      • 1...Qxe6
        • 2.Qd1#
      • 1...Qd4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);XS(E)::B(B)+S(F),DCHECK
        • Q(c);::B(B)+S(F),DCHECK
        • Q(c);::B(B)+S(F),DCHECK,XQ(c)
        • B(f);::B(B)+S(F),DCHECK
      • Refutation
        • Q(c);P_SPINQ(c),XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(a)
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • S(F);CHECK,XP(d)
      • Refutation
        • Q(c);P_SPINQ(c)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(b);CHECK,P_SPINP(d),S_CUTQ(c),S_FLIGHT,XS(E)::S(F)
      • Q(c);CHECK,XB(C)::B(B)+S(F),DCHECK,XQ(c)
      • Q(c);OGATEB,P_SPINQ(c),XS(F)::QAR2(A)
      • Q(c);N_GUARD,SBLOCK,XS(E)::QAR(A)
      • Q(c);::B(B)+S(F),DCHECK
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).