MESON Chess Problem Database

Problem Display
PID: 28900 (8/8/p2P4/bk1K4/8/R7/8/Q7 w - - 0 1)

Ramsey, Robert Henry

London Advertiser, 1873

8/8/p2P4/bk1K4/8/R7/8/Q7

#2

4 + 3

145 StrateGems 1998
3248 Miniatures canadiennes 2000
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qb2#
    • 1...Bb6
      • 2.Rb3#
      • 2.Qb2#
      • 2.Qb1#
    • 1...Bc7
      • 2.Rb3#
      • 2.Qb2#
      • 2.Qb1#
    • 1...Bd8
      • 2.Rb3#
      • 2.Qb2#
      • 2.Qb1#
  • Tries
    • 1.Rxa5+?
      • 1...Kb4
        • 2.Qa3#
      • 1...Kb6!
    • 1.Qd4?
      • threat
        • 2.Qc5#
      • 1...Bb6
        • 2.Qb2#
        • 2.Qa4#
        • 2.Qc4#
      • 1...Bb4!
    • 1.Qg7?
      • 1...Kb4
        • 2.Qb2#
      • 1...Bb4
        • 2.Qb7#
      • 1...Be1
        • 2.Qb7#
      • 1...Bd2
        • 2.Qb7#
      • 1...Bc3
        • 2.Qb7#
      • 1...Bb6
        • 2.Qb2#
      • 1...Bc7
        • 2.Qb2#
      • 1...Bd8
        • 2.Qb2#
      • 1...Kb6!
    • 1.Qg1?
      • threat
        • 2.Qc5#
      • 1...Kb4
        • 2.Qc5#
      • 1...Bb6
        • 2.Qb1#
      • 1...Bb4!
  • Keys
    • 1.Qh8!
      • 1...Kb4
        • 2.Qb2#
      • 1...Kb6
        • 2.Qb8#
      • 1...Bb4
        • 2.Qb8#
      • 1...Be1
        • 2.Qb8#
      • 1...Bd2
        • 2.Qb8#
      • 1...Bc3
        • 2.Qb8#
      • 1...Bb6
        • 2.Qb2#
      • 1...Bc7
        • 2.Qb2#
      • 1...Bd8
        • 2.Qb2#

This anticipates 10952(1881), 120686(1954)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • R(B);CHECK,XB(a)
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • B(a);N_GUARD,SBLOCK::QAR2(A)
        • B(a);N_GUARD::QAR2(A)
        • B(a);N_GUARD,SBLOCK::QAR(A)
        • B(a);N_GUARD::QAR(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
        • B(a);N_GUARD,SBLOCK::QAR(A)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • B(a);N_GUARD,SBLOCK::QAR(A)
      • B(a);N_GUARD::QAR(A)
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