MESON Chess Problem Database

Problem Display
PID: 69219 (N7/4p3/2PpR3/3kp1K1/P3N3/4P3/1Q6/2R5 w - - 0 1)

Grimshaw, Walter

The Chess Player's Chronicle (Sampson), 1875

N7/4p3/2PpR3/3kp1K1/P3N3/4P3/1Q6/2R5

#2

9 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Kg4?
      • 1...Kxe4
        • 2.Qd4#
      • 1...Kxe6!
    • 1.Kg6?
      • 1...Kxe6
        • 2.Sc7#
      • 1...Kxe4!
    • 1.Sc3+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Kc5
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qb5#
      • 1...Kxe6!
    • 1.Sc5?
      • 1...Kxc6
        • 2.Qb7#
      • 1...dxc5
        • 2.Qxe5#
      • 1...e4!
    • 1.Rc3?
      • 1...Kxe4
        • 2.Qg2#
      • 1...Kxe6!
    • 1.Rc4?
      • 1...Kxc4
        • 2.Qb5#
      • 1...Kxe6!
    • 1.Rg6?
      • 1...e6
        • 2.Sf6#
      • 1...Kxe4!
    • 1.Rh6?
      • 1...e6
        • 2.Sf6#
      • 1...Kxe4!
    • 1.Qd4+?
      • 1...exd4
        • 2.Sc7#
      • 1...Kxe6!
    • 1.Qf2?
      • 1...Kxe6
        • 2.Sc7#
      • 1...Kxe4!
    • 1.Qb8?
      • 1...Kxe6
        • 2.Qg8#
      • 1...Kxe4!
  • Keys
    • 1.Rf1!
      • 1...Kc4
        • 2.Qb5#
      • 1...Kxe4
        • 2.Qd4#
      • 1...Kxc6
        • 2.Qb5#
      • 1...Kxe6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT,XS(E)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(H)
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT,XR(H)::S(I)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);P_SPINP(c),S_FLIGHT,XP(G)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(H)
    • Try
      • S(E);
      • Vars
        • K(a);OGATEB,P_SPINP(c),S_FLIGHT,XP(G)::QAB1(B)
        • P(c);N_GUARD,XS(E)::QAR1(B),XP(b)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Vars
        • K(a);OGATEB,P_SPINP(b),S_FLIGHT,XS(E)::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XR(H)
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT,XR(A)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(H)
    • Try
      • R(H);
      • Vars
        • P(d);N_GUARD,SBLOCK::S(E)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • R(H);
      • Vars
        • P(d);N_GUARD,SBLOCK::S(E)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • Q(B);CHECK
      • Vars
        • P(b);XQ(B)::S(I)
      • Refutation
        • K(a);S_FLIGHT,XR(H)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT,XR(H)::S(I)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XS(E)
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(H)::QAB(B)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XS(E)
  • Actual
    • R(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P_SPINP(b),S_FLIGHT,XS(E)::QAR1(B)
      • K(a);P_SPINP(c),S_FLIGHT,XP(G)::QAB1(B)
      • K(a);S_FLIGHT,XR(H)::S(I)
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