MESON Chess Problem Database

Problem Display
PID: 70973 (8/8/1Qn2k2/5N2/4R2K/8/6R1/8 w - - 0 1)

Speckmann, Werner

Comm., Skakbladet, 1961-1962

8/8/1Qn2k2/5N2/4R2K/8/6R1/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6?
      • threat
        • 2.Qf2#
      • 1...Sd4
        • 2.Qxd4#
        • 2.Qd8#
      • 1...Se7
        • 2.Qd4#
        • 2.Qb2#
      • 1...Se5!
    • 1.Rgg4?
      • 1...Kxf5
        • 2.Qf2#
      • 1...Kf7!
    • 1.Re1?
      • 1...Kxf5
        • 2.Qf2#
      • 1...Kf7!
    • 1.Ree2?
      • 1...Kxf5
        • 2.Qf2#
      • 1...Kf7!
    • 1.Re8?
      • 1...Kxf5
        • 2.Qf2#
      • 1...Kf7!
    • 1.Qf2?
      • threat
        • 2.Se3#
        • 2.Sd4#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Se7#
        • 2.Sg7#
      • 1...Kf7
        • 2.Se3#
        • 2.Sd4#
        • 2.Sd6#
        • 2.Sh6#
      • 1...Sd4
        • 2.Sxd4#
      • 1...Se7
        • 2.Sxe7#
      • 1...Se5!
    • 1.Qxc6+?
      • 1...Kxf5
        • 2.Rf2#
        • 2.Rg5#
        • 2.Qe6#
        • 2.Qg6#
      • 1...Kf7!
  • Keys
    • 1.Re7!
      • 1...Kxf5
        • 2.Qf2#

This is a version of 234508

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(B);
      • Vars
        • K(b);N_SPINS(a),OGATEB,P-FLIGHT,XS(D)::QAR(E)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(b);N_SPINS(a),OGATEB,P-FLIGHT,XS(D)::QAR(E)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • R(B);
      • 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(6)
      • 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(B);
    • Vars
      • K(b);N_SPINS(a),OGATEB,P-FLIGHT,XS(D)::QAR(E)
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