MESON Chess Problem Database

Problem Display
PID: 214366 (1Q6/2R5/2N5/3kp3/4N3/8/2K5/8 w - - 0 1)

de Montauban, JG

La Strategie, 1877

1Q6/2R5/2N5/3kp3/4N3/8/2K5/8

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb3#
  • Tries
    • 1.Ra7?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qxe5#
      • 1...Kxe4!
    • 1.Re7?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Kxe4!
    • 1.Rg7?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qxe5#
      • 1...Kxe4!
    • 1.Rh7?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qxe5#
      • 1...Kxe4!
    • 1.Qb2?
      • 1...Kc4
        • 2.Se7#
        • 2.Qb3#
      • 1...Ke6
        • 2.Qxe5#
      • 1...Kxe4!
    • 1.Qb5+?
      • 1...Ke6
        • 2.Qxe5#
      • 1...Kxe4!
    • 1.Qd8+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke6
        • 2.Qd7#
      • 1...Kxe4!
    • 1.Qf8?
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke6
        • 2.Qf7#
      • 1...Kxe4!
  • Keys
    • 1.Rf7!
      • 1...Kc4
        • 2.Qb3#
      • 1...Kxe4
        • 2.Qxe5#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(E)
  • Tries
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
        • K(a);S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XS(B)
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
        • K(a);S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
        • K(a);S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • R(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT,XS(B)::QAR1(E),XP(b)
      • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • K(a);S_FLIGHT::QAB(E)
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