MESON Chess Problem Database

Problem Display
PID: 134478 (8/2Q5/1P1P2K1/1P1PN2R/1N1k2p1/r1p4b/q1p1R3/8 w - - 0 1)

Janevski, Zivko

Probleemblad, 2009

8/2Q5/1P1P2K1/1P1PN2R/1N1k2p1/r1p4b/q1p1R3/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qc4#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qxd5
      • 2.Sxc2#
    • 1...Qa1
      • 2.Qc4#
    • 1...Qb2
      • 2.Qc4#
    • 1...Rb3
      • 2.Qc4#
    • 1...g3
      • 2.Sf3#
  • Tries
    • 1.Sxa2?
      • threat
        • 2.Qc4#
      • 1...Kxd5
        • 2.Sf3#
      • 1...Ra4!
    • 1.Sxc2+?
      • 1...Kxd5
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sc4#
        • 2.Sxg4#
        • 2.Sd7#
        • 2.Sf7#
      • 1...Qxc2+!
    • 1.Sbd3?
      • threat
        • 2.Qc5#
      • 1...Kxd5
        • 2.Sf3#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Qxd5!
    • 1.Sd7?
      • threat
        • 2.Qc5#
      • 1...Qxd5
        • 2.Rxd5#
      • 1...Qc4!
    • 1.Rxh3?
      • threat
        • 2.Rd3#
      • 1...gxh3
        • 2.Sf3#
      • 1...Qc4
        • 2.Qxc4#
      • 1...g3
        • 2.Sf3#
        • 2.Rh4#
      • 1...c1S!
    • 1.Rh4?
      • threat
        • 2.Sf3#
      • 1...Qxd5
        • 2.Sxc2#
      • 1...Bg2!
    • 1.b7?
      • threat
        • 2.Qb6#
      • 1...Qxd5
        • 2.Sxc2#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Ra6!
  • Keys
    • 1.Sed3!
      • threat
        • 2.Qc5#
      • 1...Qxd5
        • 2.Rxd5#
      • 1...Qc4
        • 2.Qg7#

There are these versions: 138261

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_GUARD::QAR1(J)
    • Q(a);N_GUARD::QAR1(J),XQ(a)
    • Q(a);N_GUARD,SBLOCK,XP(D)::S(B),XP(b)
    • R(c);S_CUTQ(a)::QAR1(J)
    • P(g);N_GUARD::S(E)
  • Tries
    • Try
      • S(B);XQ(a)
      • Threat
        • QAR1(J)
      • Vars
        • K(f);P-FLIGHT,XP(D)::R(F)+S(E)
      • Refutation
        • R(c);
    • Try
      • S(B);CHECK,XP(b)
      • Refutation
        • Q(a);CHECK,XS(B)
    • Try
      • S(B);
      • Threat
        • QAB1(J)
      • Vars
        • K(f);P-FLIGHT,XP(D)::R(F)+S(E)
        • Q(a);N_GUARD::QAR1(J),XQ(a)
      • Refutation
        • Q(a);XP(D)
    • Try
      • S(E);
      • Threat
        • QAB1(J)
      • Vars
        • Q(a);OGATE,XP(D)::R1(F),XQ(a)
      • Refutation
        • Q(a);
    • Try
      • R(F);XB(e)
      • Threat
        • R1(F)
      • Vars
        • P(g);N_GUARD,XR(F)::S(E)
        • Q(a);N_GUARD::QAR1(J),XQ(a)
      • Refutation
        • P(b);
    • Try
      • R(F);P_PINP(g)
      • Threat
        • S(E)
      • Vars
        • Q(a);N_GUARD,SBLOCK,XP(D)::S(B),XP(b)
      • Refutation
        • B(e);
    • Try
      • P(G);
      • Threat
        • QAB(J)
      • Vars
        • Q(a);N_GUARD,SBLOCK,XP(D)::S(B),XP(b)
        • Q(a);N_GUARD::QAR1(J),XQ(a)
      • Refutation
        • R(c);P_PINP(H)
  • Actual
    • S(E);
    • Threat
      • QAB1(J)
    • Vars
      • Q(a);OGATE,XP(D)::R1(F),XQ(a)
      • Q(a);SBLOCK::QAB(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).