MESON Chess Problem Database

Problem Display
PID: 163325 (2B2qr1/8/p2p1PP1/1p1k2KR/1R5Q/7p/5nn1/6B1 w - - 0 1)

Zastrow, Bruno

Hamburger Nachrichten, 1925

2B2qr1/8/p2p1PP1/1p1k2KR/1R5Q/7p/5nn1/6B1

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd4#
    • 1...Sd1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Sd3
      • 2.Qe4#
    • 1...Se4+
      • 2.Qxe4#
  • Tries
    • 1.Rxb5+?
      • 1...Kc6
        • 2.Qc4#
      • 1...axb5!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qe6#
        • 2.Qd4#
      • 1...bxc4!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Qd4#
      • 1...Qh6+
        • 2.Kxh6#
      • 1...Qxf6+
        • 2.Kxf6#
      • 1...Rxg6+
        • 2.Kxg6#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke5
        • 2.Qd4#
      • 1...Sxh4
        • 2.Kxh4#
      • 1...Sg4
        • 2.Kxg4#
      • 1...Sf4
        • 2.Kxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • K(e);P-FLIGHT::QAB1(C)
    • S(a);N_GUARD::QAB1(C)
    • S(a);CHECK,N_GUARD::QAB1(C),XS(a)
  • Tries
    • Try
      • R(B);CHECK,XP(d)
      • Vars
        • K(e);S_FLIGHT::QAR2(C)
      • Refutation
        • P(f);XR(B)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(d);XQ(C)
  • Actual
    • B(H);
    • Threat
      • QAR1(C)
    • Vars
      • Q(h);CHECK::R(E)+K(D),XQ(h)
      • Q(h);CHECK,XP(F)::R(E)+K(D),XQ(h)
      • R(i);CHECK,XP(G)::R(E)+K(D),XR(i)
      • S(a);CHECK,N_GUARD::QAB1(C),XS(a)
      • K(e);P-FLIGHT,P_SPINS(a)::QAB1(C)
      • K(e);P-FLIGHT::QAB1(C)
      • S(b);XQ(C)::R(E)+K(D),XS(b)
      • S(a);::R(E)+K(D),XS(a)
      • S(b);::R(E)+K(D),XS(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).