MESON Chess Problem Database

Problem Display
PID: 93183 (3N4/5Q2/3r2p1/1B6/3bk1K1/3rPp2/5P2/B7 w - - 0 1)

Balslev, Ole

Skakbladet, 1967

3N4/5Q2/3r2p1/1B6/3bk1K1/3rPp2/5P2/B7

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qf4#
    • 1...Bxe3
      • 2.Qxf3#
    • 1...Bc5
      • 2.Qxf3#
    • 1...Be5
      • 2.Qxf3#
    • 1...Bb6
      • 2.Qxf3#
    • 1...Ba7
      • 2.Qxf3#
    • 1...Bg7
      • 2.Qxf3#
    • 1...Bh8
      • 2.Qxf3#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Bc6+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Rd5
        • 2.Qxd5#
        • 2.Qf4#
      • 1...Rxc6!
    • 1.Qe6+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Rxe6!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf4#
      • 1...Bxe3
        • 2.Qxf3#
      • 1...Rf6
        • 2.Qd5#
      • 1...Be5
        • 2.Qxf3#
      • 1...Bf6
        • 2.Qxg6#
      • 1...g5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(e);SBLOCK::QAR1(F)
    • B(c);XP(C)::QAB1(F),XP(b)
    • B(c);::QAB1(F),XP(b)
    • P(f);N_GUARD::QAB1(F)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINB(c)::QAB1(F)
      • Refutation
        • R(e);XB(E)
    • Try
      • Q(F);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR1(F),XB(c)
      • Refutation
        • R(e);XQ(F)
  • Actual
    • B(E);
    • Threat
      • QAR1(F)
    • Vars
      • K(d);P-FLIGHT,P_SPINB(c)::QAB1(F)
      • B(c);XP(C)::QAB1(F),XP(b)
      • R(e);N_GUARD::QAB1(F)
      • B(c);::QAB1(F),XP(b)
      • B(c);S_CUTR(e)::QAB(F),XP(f)
      • P(f);N_GUARD::QAB1(F)
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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).