MESON Chess Problem Database

Problem Display
PID: 120132 (5Q2/1K1p4/p2Pp3/B5p1/2Pk2p1/P2B2P1/4P3/8 w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

Tidskrift for Schack, 1916

5Q2/1K1p4/p2Pp3/B5p1/2Pk2p1/P2B2P1/4P3/8

#2

9 + 6

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Bb6#
    • 1...Ke5
      • 2.Bc3#
    • 1...e5
      • 2.Qf2#
  • Tries
    • 1.Kb6?
      • 1...Ke5
        • 2.Bc3#
      • 1...e5
        • 2.Qf2#
      • 1...Ke3!
    • 1.Kc7?
      • 1...Kc5
        • 2.Bb6#
        • 2.Qf2#
      • 1...Ke5
        • 2.Bc3#
        • 2.Qg7#
        • 2.Qh8#
      • 1...e5
        • 2.Qf2#
      • 1...Ke3!
    • 1.Be1?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.Bf2#
      • 1...Ke5
        • 2.Bc3#
      • 1...e5
        • 2.Qf2#
      • 1...a5!
    • 1.Bd2?
      • 1...Kc5
        • 2.Be3#
      • 1...Ke5
        • 2.Bc3#
      • 1...e5
        • 2.Qf2#
      • 1...a5!
    • 1.Qf4+?
      • 1...Kc5
        • 2.Bb4#
        • 2.Bb6#
        • 2.Qe5#
      • 1...gxf4!
    • 1.Qf5?
      • 1...Ke3
        • 2.Qc5#
      • 1...e5
        • 2.Qf2#
      • 1...exf5!
    • 1.Qf6+?
      • 1...Kc5
        • 2.Bb4#
        • 2.Qe5#
      • 1...e5
        • 2.Qf2#
      • 1...Ke3!
    • 1.Qd8?
      • 1...Ke3
        • 2.Qb6#
      • 1...Kc5
        • 2.Qb6#
      • 1...e5
        • 2.Qb6#
      • 1...Ke5!
  • Keys
    • 1.Qb8!
      • 1...Ke3
        • 2.Qa7#
      • 1...Kc5
        • 2.Bb6#
      • 1...Ke5
        • 2.Bc3#
      • 1...e5
        • 2.Qa7#

Anticipated by 24362(1883)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(F)
    • P(e);SBLOCK::QAB(I)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(F)
        • P(e);SBLOCK::QAB(I)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(H);P-FLIGHT
      • Vars
        • P(e);SBLOCK::QAB(I)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(I)
        • K(a);S_FLIGHT::B(F)
        • P(e);SBLOCK::QAB(I)
      • Refutation
        • P(d);
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
        • P(e);SBLOCK::QAB(I)
      • Refutation
        • P(d);
    • Try
      • Q(I);CHECK
      • Refutation
        • P(c);XQ(I)
    • Try
      • Q(I);
      • Vars
        • K(a);S_FLIGHT::QAB(I)
        • P(e);SBLOCK::QAB(I)
      • Refutation
        • P(e);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • P(e);P_SPINP(e),SBLOCK::QAB(I)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(I);
      • Vars
        • K(a);S_FLIGHT::QAB(I)
        • K(a);S_FLIGHT::QAB1(I)
        • P(e);SBLOCK::QAB(I)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(I);
    • Vars
      • K(a);S_FLIGHT::QAB(I)
      • K(a);S_FLIGHT::B(F)
      • P(e);SBLOCK::QAB(I)
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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).