MESON Chess Problem Database

Problem Display
PID: 149412 (8/8/1n6/3kN3/4N3/8/6QB/K7 w - - 0 1)

Dehler, Ernst Georg

Sammler, 1918

8/8/1n6/3kN3/4N3/8/6QB/K7

#2

5 + 2

5454 Near Snap 2014
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2?
      • 1...Kd4
        • 2.Qd3#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qc4#
      • 1...Sa8
        • 2.Qc4#
      • 1...Sc8
        • 2.Qc4#
      • 1...Ke6!
    • 1.Qd2+?
      • 1...Kxe4
        • 2.Qd3#
      • 1...Ke6!
    • 1.Qe2?
      • 1...Kd4
        • 2.Qd3#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qc4#
      • 1...Sa8
        • 2.Qc4#
      • 1...Sc8
        • 2.Qc4#
      • 1...Ke6!
  • Keys
    • 1.Qf1!
      • 1...Kd4
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Ke6
        • 2.Qf7#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qc4#
      • 1...Sa8
        • 2.Qc4#
      • 1...Sc8
        • 2.Qc4#

Anticipated by 107962(1904)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • S(b);N_GUARD::QAB1(B)
        • S(b);N_GUARD::QAB1(B),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(D)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • S(b);N_GUARD::QAB1(B)
        • S(b);N_GUARD::QAB1(B),XS(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT,XS(D)::QAB1(B)
      • K(a);S_FLIGHT::QAB1(B)
      • S(b);N_GUARD::QAB1(B)
      • S(b);N_GUARD::QAB1(B),XS(b)
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