MESON Chess Problem Database

Problem Display
PID: 149555 (5K2/1p1B4/pP3Q2/P3B3/1kp1P3/8/8/8 w - - 0 1)

Dehler, Ernst Georg

Tidskrift for Schack, 1912

5K2/1p1B4/pP3Q2/P3B3/1kp1P3/8/8/8

#2

7 + 4

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa5
      • 2.Bc3#
    • 1...Kc5
      • 2.Bd6#
      • 2.Qe7#
      • 2.Qd6#
  • Tries
    • 1.Bb2?
      • 1...Kxa5
        • 2.Bc3#
      • 1...Kc5
        • 2.Ba3#
        • 2.Qe7#
      • 1...c3
        • 2.Qxc3#
      • 1...Kb3!
    • 1.Qe7+?
      • 1...Kxa5
        • 2.Qc5#
      • 1...Kb3!
    • 1.Qf2?
      • 1...Ka3
        • 2.Qb2#
      • 1...Kb3
        • 2.Qb2#
      • 1...Kxa5
        • 2.Bc3#
        • 2.Qc5#
      • 1...c3!
    • 1.Qf3?
      • 1...Kc5
        • 2.Qa3#
      • 1...c3
        • 2.Qxc3#
      • 1...Kxa5!
    • 1.Qc6?
      • 1...Ka3
        • 2.Qa4#
      • 1...Kb3
        • 2.Qa4#
      • 1...Kxa5
        • 2.Bc3#
        • 2.Qc5#
      • 1...c3
        • 2.Qxc3#
      • 1...bxc6!
    • 1.Qd6+?
      • 1...Kxa5
        • 2.Bc3#
        • 2.Qc5#
      • 1...Kb3!
  • Keys
    • 1.Ba1!
      • 1...Ka3
        • 2.Qb2#
      • 1...Kb3
        • 2.Qb2#
      • 1...Kxa5
        • 2.Bc3#
      • 1...Kc5
        • 2.Qe7#
      • 1...c3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT,XP(B)::B(C)
  • Tries
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT,XP(B)::B(C)
        • P(b);::QAB1(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(B)::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • P(b);::QAB1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(B)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
        • K(a);P-FLIGHT::QAB1(E)
        • P(b);OGATE::QAB1(E),XP(b)
      • Refutation
        • P(d);XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);P-FLIGHT::QAR1(E)
      • K(a);S_FLIGHT,XP(B)::B(C)
      • K(a);S_FLIGHT::QAB(E)
      • P(b);::QAB1(E),XP(b)
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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).