MESON Chess Problem Database

Problem Display
PID: 193442 (8/8/5Bp1/5R2/7p/4b1kp/7n/3Q3K w - - 0 1)

Feldbrand, Mark

Pesti Naplo, 1914

8/8/5Bp1/5R2/7p/4b1kp/7n/3Q3K

#2

4 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qg1#
    • 1...Bg1
      • 2.Be5#
      • 2.Qxg1#
    • 1...Bd2
      • 2.Qg1#
    • 1...Bf2
      • 2.Be5#
    • 1...Bc5
      • 2.Be5#
    • 1...Bg5
      • 2.Qg1#
    • 1...Bb6
      • 2.Be5#
    • 1...Bh6
      • 2.Qg1#
    • 1...Ba7
      • 2.Be5#
    • 1...Sf1
      • 2.Qf3#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sg4
      • 2.Rf3#
      • 2.Qf3#
  • Tries
    • 1.Qd6+?
      • 1...Bf4
        • 2.Qxf4#
      • 1...Kg4!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Qg1#
      • 1...Kxf2
        • 2.Bxh4#
      • 1...Bxf2
        • 2.Be5#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sf1
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • B(b);N_GUARD::QAR2(A)
    • B(b);N_GUARD::B(D)
    • S(a);N_GUARD::QAR1(A)
    • S(a);N_GUARD::QAR1(A),XS(a)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAB1(A),XB(b)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • R(C);
    • Threat
      • QAR2(A)
    • Vars
      • K(c);S_FLIGHT,XR(C)::B(D),XP(e)
      • B(b);N_GUARD,SBLOCK,XR(C)::B(D)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • S(a);N_GUARD::QAR1(A)
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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).