MESON Chess Problem Database

Problem Display
PID: 183097 (3n1BKb/6Q1/1nN5/1p1kNP2/4p3/1P6/3rp3/8 w - - 0 1)

Dedrle, Frantisek

Dom i Svet, 1907

3n1BKb/6Q1/1nN5/1p1kNP2/4p3/1P6/3rp3/8

#2

7 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
    • 1...Sa8
      • 2.Qd7#
    • 1...Sb7
      • 2.Qf7#
    • 1...Sf7
      • 2.Qxf7#
    • 1...e3
      • 2.Qg2#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qc5#
        • 2.Qd6#
      • 1...Bxe5
        • 2.Qc5#
      • 1...Rc2
        • 2.Qd6#
      • 1...Sa4
        • 2.Qd6#
        • 2.Qxd8#
        • 2.Qd7#
      • 1...Sc4
        • 2.Qc5#
      • 1...Sd7
        • 2.Qd6#
        • 2.Qxd7#
      • 1...Sc8
        • 2.Qc5#
      • 1...Se6
        • 2.Qd6#
        • 2.Qxe6#
      • 1...Sb7
        • 2.Qe6#
        • 2.Qf7#
      • 1...Sf7
        • 2.Qc5#
        • 2.Qe6#
        • 2.Qxf7#
      • 1...e3!
    • 1.Qf7+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Sxf7!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sdb4#
        • 2.Scb4#
      • 1...Kxc6
        • 2.Sb4#
      • 1...Rxd3
        • 2.Sb4#
      • 1...Bxg7
        • 2.Sdb4#
      • 1...Sxc6
        • 2.Sf4#
      • 1...exd3
        • 2.Qg2#
      • 1...e3
        • 2.Qg2#
      • 1...b4
        • 2.Sdxb4#
        • 2.Scxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • S(f);N_GUARD::QAR2(E)
    • S(f);N_GUARD::QAR2(E),XS(f)
    • S(g);N_GUARD::QAB(E)
    • S(g);N_GUARD::QAB(E),XS(g)
    • P(c);OGATEB::QAB(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);XS(B)::QAR1(E)
        • R(a);::QAR1(E)
        • S(f);::QAR1(E)
      • Refutation
        • P(c);
    • Try
      • Q(E);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB1(E),XS(g)
      • Refutation
        • S(g);XQ(E)
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(e);S_FLIGHT,XS(D)::S(B)
      • R(a);XS(B)::S(D)
      • B(h);XQ(E)::S(B)
      • S(g);SBLOCK,XS(D)::S(B)
      • P(c);OGATEB,XS(B)::QAB(E)
      • P(c);OGATEB::QAB(E)
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