MESON Chess Problem Database

Problem Display
PID: 76792 (3Q4/3B4/3p4/1P1p1P2/3k4/3P4/3B4/3K4 w - - 0 1)

Ross, Colonel C

The Tablet, 1945

(First published on Sat May 12 1945)

3Q4/3B4/3p4/1P1p1P2/3k4/3P4/3B4/3K4

#2

7 + 3

15239 Valois Notebooks 2016
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qh8#
  • Tries
    • 1.Kc2?
      • 1...Ke5
        • 2.Qh8#
      • 1...Kc5!
    • 1.Ke2?
      • 1...Ke5
        • 2.Qh8#
      • 1...Kc5!
    • 1.Qb8?
      • 1...Kc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Qh8#
      • 1...Kxd3!
    • 1.Qc8?
      • threat
        • 2.Qc3#
      • 1...Ke5
        • 2.Qh8#
      • 1...Kxd3!
    • 1.Qg8?
      • 1...Kxd3
        • 2.Qxd5#
      • 1...Ke5
        • 2.Qg7#
        • 2.Qh8#
      • 1...Kc5!
  • Keys
    • 1.Qa8!
      • 1...Kxd3
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Qh8#

This anticipates 260991(1974)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(G)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB(G)
        • K(a);P_SPINP(c),S_FLIGHT::QAB(G)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • K(a);S_FLIGHT::QAB(G)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(G);
      • Vars
        • K(a);P-FLIGHT,XP(C)::QAR2(G),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);P-FLIGHT,XP(C)::QAR2(G),XP(b)
      • K(a);S_FLIGHT::QAB(G)
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