MESON Chess Problem Database

Problem Display
PID: 270442 (2R5/4N3/rp6/p2p2K1/nkB5/2pQ4/8/R6b w - - 0 1)

Subotic, Miroslav

Probleemblad, 2022

2R5/4N3/rp6/p2p2K1/nkB5/2pQ4/8/R6b

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Sc6#
    • 1...c2
      • 2.Qa3#
      • 2.Qb3#
    • 1...dxc4
      • 2.Qxc4#
  • Tries
    • 1.Bxa6?
      • threat
        • 2.Qb5#
      • 1...b5
        • 2.Qxb5#
      • 1...Kb3!
    • 1.Qc2?
      • threat
        • 2.Rxa4#
        • 2.Qb3#
        • 2.Qxa4#
      • 1...dxc4
        • 2.Qxa4#
      • 1...Sb2
        • 2.Qb3#
      • 1...b5
        • 2.Qb3#
      • 1...Sc5!
    • 1.Qe4?
      • threat
        • 2.Sxd5#
      • 1...dxc4
        • 2.Qxc4#
      • 1...dxe4
        • 2.Sd5#
      • 1...d4
        • 2.Sd5#
      • 1...Bxe4!
    • 1.Qxd5?
      • threat
        • 2.Sc6#
        • 2.Qb5#
      • 1...Bxd5
        • 2.Sxd5#
      • 1...Sc5
        • 2.Sc6#
      • 1...b5
        • 2.Qxb5#
      • 1...c2!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Sc6#
      • 1...dxc4
        • 2.Qxc4#
      • 1...b5
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(c);SBLOCK::S(E)
    • P(f);OGATE,XB(C)::QAR1(B),XP(f)
  • Tries
    • Try
      • B(C);XR(g)
      • Threat
        • QAR1(B)
      • Vars
        • P(h);::QAR1(B),XP(h)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • P(f);XB(C)::QAR1(B),XS(c)
        • S(c);::QAR1(B)
        • P(h);::QAR1(B)
      • Refutation
        • S(c);
    • Try
      • Q(B);
      • Threat
        • S(E),XP(f)
      • Vars
        • P(f);OGATE,P_SPINP(f),XB(C)::QAR1(B),XP(f)
        • P(f);XQ(B)::S(E)
        • P(f);::S(E)
      • Refutation
        • B(a);XQ(B)
    • Try
      • Q(B);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XQ(B)::S(E),XB(a)
        • S(c);::S(E)
        • P(h);::QAR1(B),XP(h)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Threat
      • S(E)
    • Vars
      • P(f);OGATE,P_SPINP(f),XB(C)::QAR1(B),XP(f)
      • P(h);SBLOCK::QAR(B)+B(C),XP(f)
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).