MESON Chess Problem Database

Problem Display
PID: 109359 (6K1/1R1N1R2/P2k4/3n4/8/8/8/3Q4 w - - 0 1)

Servais, Albert

Bulletin de la FFE, 1947

6K1/1R1N1R2/P2k4/3n4/8/8/8/3Q4

#2

6 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sb6?
      • threat
        • 2.Qxd5#
      • 1...Ke5
        • 2.Qxd5#
      • 1...Kc6
        • 2.Qxd5#
      • 1...Ke6
        • 2.Qxd5#
      • 1...Kc5!
    • 1.Sf6?
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qxd5#
      • 1...Kc6
        • 2.Qxd5#
      • 1...Ke6
        • 2.Qxd5#
      • 1...Ke5!
    • 1.Rc7?
      • 1...Ke6
        • 2.Rc6#
      • 1...Kxc7!
    • 1.Re7?
      • 1...Kc6
        • 2.Re6#
      • 1...Kxe7!
  • Keys
    • 1.Qd4!
      • 1...Kc6
        • 2.Qc5#
      • 1...Ke6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(A),XS(a)
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR1(A),XS(a)
        • K(b);N_SPINS(a),P-FLIGHT::QAB1(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • S(D);
      • Threat
        • QAR1(A),XS(a)
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::QAR1(A),XS(a)
        • K(b);N_SPINS(a),P-FLIGHT::QAB1(A),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::R(C)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT,XR(C)
    • Try
      • R(E);
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::R(E)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT,XR(E)
  • Actual
    • Q(A);
    • Vars
      • K(b);N_SPINS(a),P-FLIGHT::QAR1(A)
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