MESON Chess Problem Database

Problem Display
PID: 110271 (5K2/8/1P6/4k1bR/Rp1N4/8/1P5P/3Q3B w - - 0 1)

Leschemelle, Matthieu

Phenix, 1995

5K2/8/1P6/4k1bR/Rp1N4/8/1P5P/3Q3B

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Ra5+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kd6
        • 2.Rd5#
      • 1...Kf6!
    • 1.Rxg5+?
      • 1...Kf4
        • 2.Qc1#
        • 2.Qd2#
      • 1...Kd6
        • 2.Rd5#
      • 1...Kf6!
    • 1.Qc2?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qe4#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qf5#
      • 1...b3!
    • 1.Qf3?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qd5#
      • 1...b3!
    • 1.Qc1?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qxg5#
      • 1...b3!
    • 1.Qe1+?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qg3#
        • 2.Qe4#
      • 1...Kf6
        • 2.Qe6#
      • 1...Kd6!
  • Keys
    • 1.Qb3!
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6
        • 2.Qd5#
      • 1...Kf6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);N_SPINB(c),S_FLIGHT::QAR1(A)
        • K(b);N_SPINB(c),S_FLIGHT::R1(E)
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
    • Try
      • R(G);CHECK,XB(c)
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);N_SPINB(c),OGATEB,P_SPINP(a),S_FLIGHT,XS(F)::QAB1(A)
        • K(b);N_SPINB(c),S_FLIGHT::QAR1(A)
        • K(b);N_SPINB(c),S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);N_SPINB(c),OGATEB,P_SPINP(a),S_FLIGHT,XS(F)::QAB1(A)
        • K(b);N_SPINB(c),S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);N_SPINB(c),OGATEB,P_SPINP(a),S_FLIGHT,XS(F)::QAB1(A)
        • K(b);N_SPINB(c),S_FLIGHT::QAB1(A)
        • K(b);N_SPINB(c),S_FLIGHT::QAB1(A),XB(c)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_SPINB(c),OGATEB,P_SPINP(a),S_FLIGHT,XS(F)::QAB1(A)
        • K(b);N_SPINB(c),OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);N_SPINB(c),OGATEB,P_SPINP(a),S_FLIGHT,XS(F)::QAB1(A)
      • K(b);N_SPINB(c),S_FLIGHT::QAB1(A)
      • K(b);N_SPINB(c),S_FLIGHT::QAR1(A)
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