MESON Chess Problem Database

Problem Display
PID: 227667 (8/8/5K2/8/6bk/5B1p/6P1/7Q w - - 0 1)

Jaszai, Dezso

Zaszlonk, 1926

8/8/5K2/8/6bk/5B1p/6P1/7Q

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kh5
      • 2.Qxh3#
    • 1...Bxf3
      • 2.Qxh3#
    • 1...Bf5
      • 2.Qe1#
    • 1...Bh5
      • 2.Qe1#
      • 2.Qxh3#
    • 1...Be6
      • 2.Qe1#
    • 1...Bd7
      • 2.Qe1#
    • 1...Bc8
      • 2.Qe1#
  • Tries
    • 1.g3+?
      • 1...Kh5
        • 2.Qxh3#
      • 1...Kxg3!
  • Keys
    • 1.Qh2!
      • 1...Kh5
        • 2.Qxh3#
      • 1...Bxf3
        • 2.Qxh3#
      • 1...Bf5
        • 2.g3#
      • 1...Bh5
        • 2.Qxh3#
        • 2.g3#
      • 1...Be6
        • 2.g3#
      • 1...Bd7
        • 2.g3#
      • 1...Bc8
        • 2.g3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT,P_SPINB(b)::QAR2(A),XP(a)
    • B(b);N_GUARD,XB(C)::QAR1(A),XP(a)
    • B(b);::QAB(A)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINB(b)::QAR2(A),XP(a)
      • Refutation
        • K(c);N_SPINP(a),S_FLIGHT,XP(B)
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT,P_SPINB(b)::QAR2(A),XP(a)
      • B(b);N_GUARD,XB(C)::QAR1(A),XP(a)
      • B(b);::P(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).