MESON Chess Problem Database

Problem Display
PID: 18748 (2Q5/5K2/8/3p4/4kB2/5R2/8/b2B4 w - - 0 1)

Issler, Werner

1st Comm., BCF 089. Ty., 1958-1959

2Q5/5K2/8/3p4/4kB2/5R2/8/b2B4

#2

5 + 3

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Qc2#
    • 1...d4
      • 2.Qe6#
  • Tries
    • 1.Bd6?
      • threat
        • 2.Qg4#
      • 1...Kd4
        • 2.Qg4#
      • 1...d4
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qb7#
        • 2.Qc6#
        • 2.Qa8#
      • 1...Be5!
    • 1.Qg4?
      • threat
        • 2.Bh2#
        • 2.Bg3#
        • 2.Bd6#
        • 2.Bc7#
        • 2.Bb8#
      • 1...Kd4
        • 2.Bd6#
      • 1...d4
        • 2.Qe6#
      • 1...Be5!
    • 1.Qa6?
      • threat
        • 2.Qd3#
      • 1...Kf5
        • 2.Qe6#
        • 2.Qg6#
      • 1...d4
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qe6+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Kd4!
    • 1.Qe8+?
      • 1...Kf5
        • 2.Qe6#
      • 1...Be5
        • 2.Qxe5#
      • 1...Kd4!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qc2#
      • 1...Ke5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK::QAB(E)
    • P(c);SBLOCK,S_CUTB(a)::QAR2(E)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR2(E)
      • Vars
        • K(b);P-FLIGHT::QAR(E)
      • Refutation
        • B(a);
    • Try
      • Q(E);
      • Threat
        • DUALS(5)
      • Vars
        • K(b);P-FLIGHT::QAR(E)+B(C)
        • P(c);SBLOCK,S_CUTB(a)::QAR2(E)
      • Refutation
        • B(a);
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • P(c);SBLOCK,S_CUTB(a)::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(E),XB(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • B(a);N_GUARD,P_SPINB(a)::QAR1(E),XB(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(C);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • K(b);P-FLIGHT::QAR1(E)
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).