MESON Chess Problem Database

Problem Display
PID: 234508 (8/8/2Qn2k1/6N1/5R2/1K6/7R/8 w - - 0 1)

Speckmann, Werner

Skakbladet, 1961

8/8/2Qn2k1/6N1/5R2/1K6/7R/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Se6?
      • threat
        • 2.Qg2#
      • 1...Se4
        • 2.Qxe4#
        • 2.Qe8#
      • 1...Sf7
        • 2.Qe4#
        • 2.Qc2#
      • 1...Sf5!
    • 1.Rhh4?
      • 1...Kxg5
        • 2.Qg2#
      • 1...Kg7!
    • 1.Rf1?
      • 1...Kxg5
        • 2.Qg2#
      • 1...Kg7!
    • 1.Rff2?
      • 1...Kxg5
        • 2.Qg2#
      • 1...Kg7!
    • 1.Rf8?
      • 1...Kxg5
        • 2.Qg2#
      • 1...Kg7!
    • 1.Qg2?
      • threat
        • 2.Sf3#
        • 2.Se4#
        • 2.Se6#
        • 2.Sf7#
        • 2.Sh7#
      • 1...Kg7
        • 2.Sf3#
        • 2.Se4#
        • 2.Se6#
      • 1...Se4
        • 2.Sxe4#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Sf5!
    • 1.Qxd6+?
      • 1...Kxg5
        • 2.Qf6#
        • 2.Qh6#
      • 1...Kg7!
  • Keys
    • 1.Rf7!
      • 1...Kxg5
        • 2.Qg2#

There are these versions: 70973

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);N_PINS(a)
      • Threat
        • QAR(E)
      • Refutation
        • S(a);
    • Try
      • R(A);
      • Vars
        • K(b);N_SPINS(a),OGATEB,P-FLIGHT,XS(D)::QAR(E)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • R(C);
      • Vars
        • K(b);N_SPINS(a),OGATEB,P-FLIGHT,XS(D)::QAR(E)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • R(C);
      • Vars
        • K(b);N_SPINS(a),OGATEB,P-FLIGHT,XS(D)::QAR(E)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • R(C);
      • Vars
        • K(b);N_SPINS(a),OGATEB,P-FLIGHT,XS(D)::QAR(E)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • Q(E);N_PINS(a)
      • Threat
        • DUALS(5)
      • Vars
        • S(a);::QAR(E)+S(D),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(E);CHECK,XS(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(b);N_SPINS(a),OGATEB,P-FLIGHT,XS(D)::QAR(E)
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