MESON Chess Problem Database

Problem Display
PID: 223449 (q5b1/1p1Bb3/1R6/2pk4/6N1/n1p1pPP1/2N1n2Q/3K4 w - - 0 1)

Steif, Adolf

Bruderschaft, 1886

q5b1/1p1Bb3/1R6/2pk4/6N1/n1p1pPP1/2N1n2Q/3K4

#2

8 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Bxe6#
    • 1...Bh7
      • 2.Be6#
    • 1...Sd4
      • 2.Scxe3#
  • Tries
    • 1.Sf6+?
      • 1...Kc4
        • 2.Qxe2#
      • 1...Ke5
        • 2.Qh5#
      • 1...Bxf6!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Sgxe3#
      • 1...Bxh7
        • 2.Be6#
      • 1...Sxg3
        • 2.Qd3#
      • 1...Qa4
        • 2.Qxg8#
      • 1...Sd4
        • 2.Scxe3#
      • 1...c4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(j);N_GUARD::B(H),XB(j)
    • B(j);N_GUARD::B(H)
    • S(a);SBLOCK::S(B),XP(d)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB(C),XS(a)
        • K(f);P-FLIGHT::QAR(C)
      • Refutation
        • B(h);XS(F)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(f);S_FLIGHT::S(F),XP(d)
      • B(j);N_GUARD,XQ(C)::B(H)
      • S(a);N_GUARD,XP(E)::QAR2(C)
      • Q(i);N_GUARD,P_PINS(B)::QAB(C),XB(j)
      • S(a);SBLOCK::S(B),XP(d)
      • P(e);SBLOCK::QAR2(C)
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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).