MESON Chess Problem Database

Problem Display
PID: 225203 (6B1/4P1p1/1p1P2p1/bp2pNp1/1n2k1p1/6P1/5QP1/1K2N3 w - - 0 1)

Kovacik, Jozef

Praca Prvotina, 1955

6B1/4P1p1/1p1P2p1/bp2pNp1/1n2k1p1/6P1/5QP1/1K2N3

#2

9 + 10

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qc2#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sd5
      • 2.Qc2#
    • 1...Sa6
      • 2.Qc2#
    • 1...Sc6
      • 2.Qc2#
  • Tries
    • 1.Bd5+?
      • 1...Sxd5
        • 2.Qc2#
      • 1...Kxd5!
    • 1.Be6?
      • threat
        • 2.Qe3#
        • 2.Qe2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sd5
        • 2.Qc2#
      • 1...gxf5!
    • 1.Qf1?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa2
        • 2.Qd3#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sd5
        • 2.Qd3#
      • 1...Sa6
        • 2.Qd3#
      • 1...Sc6
        • 2.Qd3#
      • 1...gxf5!
    • 1.Qc2+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sxc2!
    • 1.e8Q?
      • 1...Sd3
        • 2.Qc6#
        • 2.Qa8#
      • 1...Sa2
        • 2.Qc6#
        • 2.Qc2#
        • 2.Qa8#
      • 1...Sc2
        • 2.Qc6#
        • 2.Qxc2#
        • 2.Qa8#
      • 1...Sd5
        • 2.Qc2#
      • 1...Sa6
        • 2.Qc6#
        • 2.Qc2#
        • 2.Qa8#
      • 1...Sc6
        • 2.Qxc6#
        • 2.Qc2#
      • 1...gxf5!
    • 1.e8B?
      • 1...Sd3
        • 2.Bc6#
      • 1...Sa2
        • 2.Bc6#
        • 2.Qc2#
      • 1...Sc2
        • 2.Bc6#
        • 2.Qxc2#
      • 1...Sd5
        • 2.Qc2#
      • 1...Sa6
        • 2.Bc6#
        • 2.Qc2#
      • 1...Sc6
        • 2.Bxc6#
        • 2.Qc2#
      • 1...gxf5!
  • Keys
    • 1.Sf3!
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxf5
        • 2.Sd2#
      • 1...gxf3
        • 2.Qxf3#
      • 1...gxf5
        • 2.Qe2#
      • 1...Sd3
        • 2.Sxg5#
      • 1...Sa2
        • 2.Qc2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sd5
        • 2.Qc2#
      • 1...Sa6
        • 2.Qc2#
      • 1...Sc6
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(C)
    • S(a);N_GUARD::QAB(C),XS(a)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • S(a);SBLOCK,XB(I)::QAB(C)
      • Refutation
        • K(b);S_FLIGHT,XB(I)
    • Try
      • B(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAB(C),XS(a)
        • S(a);N_GUARD::QAB(C)
      • Refutation
        • P(i);XS(F)
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • P(i);XS(F)
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
      • Refutation
        • S(a);XQ(C)
    • Try
      • P(H);P_PINP(f)
      • Vars
        • S(a);N_GUARD::QAB(C)
      • Refutation
        • P(i);XS(F)
    • Try
      • P(H);
      • Vars
        • S(a);N_GUARD::B(H)
        • S(a);N_GUARD::QAB(C)
      • Refutation
        • P(i);XS(F)
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::QAR1(C)
      • K(b);S_FLIGHT,XS(F)::QAR(C)+S(B)
      • P(c);OGATE,XS(B)::QAB1(C),XP(c)
      • P(i);SBLOCK,XS(F)::QAR2(C)
      • S(a);SBLOCK::S(B),XP(g)
      • S(a);N_GUARD::QAB(C)
      • S(a);N_GUARD::QAB(C),XS(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).