MESON Chess Problem Database

Problem Display
PID: 122373 (8/8/6K1/8/4Q3/6pR/1kP5/RB2B3 w - - 0 1)

Meredith, William

Chess Journal, 1871

8/8/6K1/8/4Q3/6pR/1kP5/RB2B3

#2

7 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bc3+?
      • 1...Kc1
        • 2.Ba2#
        • 2.Rh1#
        • 2.Qh1#
        • 2.Qe1#
      • 1...Kxc3!
    • 1.Rh1?
      • 1...Kxa1
        • 2.Bc3#
      • 1...Kc1
        • 2.Bc3#
      • 1...g2!
    • 1.Qb7+?
      • 1...Kxa1
        • 2.Bc3#
      • 1...Kc1!
    • 1.Qb4+?
      • 1...Kxa1
        • 2.Bc3#
      • 1...Kc1!
    • 1.Qf4?
      • 1...g2
        • 2.Bc3#
      • 1...Kxa1!
    • 1.c4?
      • 1...Kxa1
        • 2.Bc3#
      • 1...Kc1
        • 2.Qc2#
      • 1...Kb3
        • 2.Qc2#
      • 1...g2!
  • Keys
    • 1.Qh1!
      • 1...Kxa1
        • 2.Bc3#
      • 1...Kc1
        • 2.Bc3#
      • 1...g2
        • 2.Bc3#

There are these versions: 207470

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XB(C)
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT,XR(A)::B(C)
        • K(a);S_FLIGHT::R(E)+B(C)
      • Refutation
        • P(b);
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(A)::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(A)::B(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • P(b);::B(C)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • P(D);
      • Vars
        • K(a);S_FLIGHT,XR(A)::B(C)
        • K(a);S_FLIGHT::QAR1(F)
        • K(a);P-FLIGHT,P_SPINP(b)::QAB1(F)
      • Refutation
        • P(b);
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT,XR(A)::B(C)
      • K(a);S_FLIGHT::QAR(F)+B(C)
      • P(b);::B(C)
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