MESON Chess Problem Database

Problem Display
PID: 275419 (8/1K3N2/p3pR1n/3N2p1/3pk2b/8/B7/2BQ1b1q w - - 0 1)

Hartert, Karl

Die Tat, 1951

(First published on Sat Dec 22 1951)

8/1K3N2/p3pR1n/3N2p1/3pk2b/8/B7/2BQ1b1q

#2

7 + 9

6490 yacpdb 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Qxf3#
    • 1...Qg1
      • 2.Qf3#
    • 1...Qh2
      • 2.Qf3#
    • 1...Be2
      • 2.Qxe2#
    • 1...Bg2
      • 2.Qe2#
    • 1...Bd3
      • 2.Qxh1#
    • 1...Bh3
      • 2.Qe2#
    • 1...Sf5
      • 2.Rxe6#
    • 1...d3
      • 2.Qa4#
    • 1...g4
      • 2.Rf4#
    • 1...e5
      • 2.Sd6#
  • Tries
    • 1.Sxg5+?
      • 1...Ke5
        • 2.Bf4#
      • 1...Bxg5!
    • 1.Bb2?
      • threat
        • 2.Qxd4#
      • 1...Qg1
        • 2.Qf3#
      • 1...Bd3
        • 2.Qxh1#
      • 1...Sf5
        • 2.Rxe6#
      • 1...d3
        • 2.Sd6#
        • 2.Qa4#
      • 1...e5
        • 2.Sd6#
      • 1...Bf2!
    • 1.Qc2+?
      • 1...d3
        • 2.Qa4#
        • 2.Qc4#
      • 1...Bd3!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qxd4#
      • 1...dxe3
        • 2.Sc3#
      • 1...Bd3
        • 2.Qxh1#
      • 1...Sf5
        • 2.Rxe6#
      • 1...d3
        • 2.Qa4#
      • 1...e5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::QAB1(B),XQ(b)
    • Q(b);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAR2(B),XB(a)
    • B(a);N_GUARD::QAR2(B)
    • B(a);OGATE,SBLOCK::QAB(B),XQ(b)
    • S(i);SBLOCK::R(E),XP(h)
    • P(c);OGATEB,SBLOCK::QAR(B)
    • P(f);N_GUARD::R1(E)
    • P(h);SBLOCK::S(G)
  • Tries
    • Try
      • S(G);CHECK,XP(f)
      • Vars
        • K(d);P-FLIGHT,P_PINS(D),S_CUTB(e)::B(A)
      • Refutation
        • B(e);XS(G)
    • Try
      • B(A);
      • Threat
        • QAR1(B),XP(c)
      • Vars
        • Q(b);N_GUARD::QAB1(B)
        • B(a);OGATE,SBLOCK::QAB(B),XQ(b)
        • S(i);SBLOCK::R(E),XP(h)
        • P(h);SBLOCK::S(G)
      • Refutation
        • B(e);
    • Try
      • Q(B);CHECK
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • B(A);
    • Threat
      • QAR1(B),XP(c)
    • Vars
      • P(c);N_GUARD,SBLOCK,XB(A)::S(D)
      • B(a);OGATE,SBLOCK::QAB(B),XQ(b)
      • S(i);SBLOCK::R(E),XP(h)
      • P(c);OGATEB,SBLOCK::QAR(B)
      • P(h);SBLOCK::S(G)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).