MESON Chess Problem Database

Problem Display
PID: 174925 (4N3/5K2/2N5/1p6/1P2k2P/4pp1B/8/5Q2 w - - 0 1)

Zimmermann, Stepan

Sachove listy, 1901

4N3/5K2/2N5/1p6/1P2k2P/4pp1B/8/5Q2

#2

7 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Bg4?
      • 1...Kf4
        • 2.Qxf3#
      • 1...Kd5
        • 2.Bxf3#
      • 1...e2
        • 2.Qxf3#
      • 1...f2!
    • 1.Bf5+?
      • 1...Kd5
        • 2.Qxb5#
      • 1...Kxf5
        • 2.Qxf3#
      • 1...Kf4!
    • 1.Qxb5?
      • threat
        • 2.Qc4#
        • 2.Qf5#
      • 1...Kf4
        • 2.Qe5#
      • 1...f2
        • 2.Qf5#
      • 1...e2!
  • Keys
    • 1.Bg2!
      • 1...Kf4
        • 2.Qxf3#
      • 1...Kd5
        • 2.Bxf3#
      • 1...Kf5
        • 2.Qxf3#
      • 1...fxg2
        • 2.Sf6#
      • 1...e2
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAR1(A),XP(b)
        • K(c);S_FLIGHT::B(B),XP(b)
        • P(a);::QAB1(A),XP(b)
      • Refutation
        • P(b);
    • Try
      • B(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(A),XP(d)
        • K(c);P_SPINP(b),S_FLIGHT,XB(B)::QAR2(A),XP(b)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(A);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
        • P(b);::QAB1(A)
      • Refutation
        • P(a);
  • Actual
    • B(B);P_PINP(b)
    • Vars
      • K(c);P-FLIGHT::QAR1(A),XP(b)
      • K(c);S_FLIGHT::B(B),XP(b)
      • K(c);S_FLIGHT::QAR2(A),XP(b)
      • P(b);N_SPINP(b),XB(B)::S(G)
      • P(a);::QAB1(A),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).