MESON Chess Problem Database

Problem Display
PID: 53555 (7b/7B/p7/K2p4/3k4/2R5/8/4Qn2 w - - 0 1)

L'Hermet, Johann Georg Rudolf

Tijdschrift vd NSB, 1895

7b/7B/p7/K2p4/3k4/2R5/8/4Qn2

#2

4 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qe3#
    • 1...Sh2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sg3
      • 2.Qe3#
  • Tries
    • 1.Kb4?
      • threat
        • 2.Rd3#
      • 1...Se3
        • 2.Qxe3#
      • 1...a5+!
    • 1.Rd3+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kc5!
    • 1.Rc4+?
      • 1...Kxc4
        • 2.Qb4#
      • 1...dxc4!
    • 1.Qh4+?
      • 1...Kxc3
        • 2.Qb4#
      • 1...Ke5!
    • 1.Qe4+?
      • 1...Kxc3
        • 2.Qb4#
      • 1...dxe4!
  • Keys
    • 1.Qe7!
      • 1...Kxc3
        • 2.Qb4#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Be5
        • 2.Qb4#
        • 2.Qc5#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Sd2
        • 2.Qe3#
      • 1...Sh2
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sg3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • R1(B)
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • P(d);CHECK
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XR(B)::QAR1(A)
      • Refutation
        • P(c);XR(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(B)::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(B)::QAB1(A)
      • Refutation
        • P(c);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT,XR(B)::QAB1(A)
      • B(e);N_GUARD::QAB(A),XB(e)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
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